+
+
Release 9.2.21
+
+
+
Release Date
+ 2017-05-11
+
+
+ This release contains a variety of fixes from 9.2.20.
+ For information about new features in the 9.2 major release, see
+ .
+
+
+ The
PostgreSQL community will stop releasing updates+ for the 9.2.X release series in September 2017.
+ Users are encouraged to update to a newer release branch soon.
+
+
+
+
Migration to Version 9.2.21
+
+ A dump/restore is not required for those running 9.2.X.
+
+
+ However, if you are upgrading from a version earlier than 9.2.20,
+ see .
+
+
+
+
+
+
Changes
+
+
+
+
+ Fix possible corruption of init forks of unlogged indexes
+ (Robert Haas, Michael Paquier)
+
+
+ This could result in an unlogged index being set to an invalid state
+ after a crash and restart. Such a problem would persist until the
+ index was dropped and rebuilt.
+
+
+
+
+ Fix incorrect reconstruction of pg_subtrans entries
+ when a standby server replays a prepared but uncommitted two-phase
+ transaction (Tom Lane)
+
+
+ In most cases this turned out to have no visible ill effects, but in
+ corner cases it could result in circular references
+ in pg_subtrans, potentially causing infinite loops
+ in queries that examine rows modified by the two-phase transaction.
+
+
+
+
+ Ensure parsing of queries in extension scripts sees the results of
+ immediately-preceding DDL (Julien Rouhaud, Tom Lane)
+
+
+ Due to lack of a cache flush step between commands in an extension
+ script file, non-utility queries might not see the effects of an
+ immediately preceding catalog change, such as ALTER TABLE
+ ... RENAME.
+
+
+
+
+ Skip tablespace privilege checks when ALTER TABLE ... ALTER
+ COLUMN TYPE rebuilds an existing index (Noah Misch)
+
+
+ The command failed if the calling user did not currently have
+ CREATE privilege for the tablespace containing the index.
+ That behavior seems unhelpful, so skip the check, allowing the
+ index to be rebuilt where it is.
+
+
+
+
+ Fix ALTER TABLE ... VALIDATE CONSTRAINT to not recurse
+ to child tables when the constraint is marked NO INHERIT
+ (Amit Langote)
+
+
+ This fix prevents unwanted constraint does not exist failures
+ when no matching constraint is present in the child tables.
+
+
+
+
+ Fix VACUUM to account properly for pages that could not
+ be scanned due to conflicting page pins (Andrew Gierth)
+
+
+ This tended to lead to underestimation of the number of tuples in
+ the table. In the worst case of a small heavily-contended
+ table, VACUUM could incorrectly report that the table
+ contained no tuples, leading to very bad planning choices.
+
+
+
+
+ Ensure that bulk-tuple-transfer loops within a hash join are
+ interruptible by query cancel requests (Tom Lane, Thomas Munro)
+
+
+
+
+ Fix cursor_to_xml() to produce valid output
+ with tableforest = false
+ (Thomas Munro, Peter Eisentraut)
+
+
+ Previously it failed to produce a wrapping <table>
+ element.
+
+
+
+
+ Improve performance of pg_timezone_names view
+ (Tom Lane, David Rowley)
+
+
+
+
+ Fix sloppy handling of corner-case errors from lseek()
+ and close() (Tom Lane)
+
+
+ Neither of these system calls are likely to fail in typical situations,
+ but if they did, fd.c could get quite confused.
+
+
+
+
+ Fix incorrect check for whether postmaster is running as a Windows
+ service (Michael Paquier)
+
+
+ This could result in attempting to write to the event log when that
+ isn't accessible, so that no logging happens at all.
+
+
+
+
+ Fix
ecpg to support COMMIT PREPARED+ and ROLLBACK PREPARED (Masahiko Sawada)
+
+
+
+
+ Fix a double-free error when processing dollar-quoted string literals
+ in
ecpg (Michael Meskes)+
+
+
+
+ In
pg_dump, fix incorrect schema and owner marking for+ comments and security labels of some types of database objects
+ (Giuseppe Broccolo, Tom Lane)
+
+
+ In simple cases this caused no ill effects; but for example, a
+ schema-selective restore might omit comments it should include, because
+ they were not marked as belonging to the schema of their associated
+ object.
+
+
+
+
+ Avoid emitting an invalid list file in pg_restore -l
+ when SQL object names contain newlines (Tom Lane)
+
+
+ Replace newlines by spaces, which is sufficient to make the output
+ valid for pg_restore -L's purposes.
+
+
+
+
+ Fix
pg_upgrade to transfer comments and security labels+ attached to large objects (blobs) (Stephen Frost)
+
+
+ Previously, blobs were correctly transferred to the new database, but
+ any comments or security labels attached to them were lost.
+
+
+
+
+ Improve error handling
+ in contrib/adminpack's pg_file_write()
+ function (Noah Misch)
+
+
+ Notably, it failed to detect errors reported
+ by fclose().
+
+
+
+
+ In contrib/dblink, avoid leaking the previous unnamed
+ connection when establishing a new unnamed connection (Joe Conway)
+
+
+
+
+ Support OpenSSL 1.1.0 (Heikki Linnakangas, Andreas Karlsson, Tom Lane)
+
+
+ This is a back-patch of work previously done in newer branches;
+ it's needed since many platforms are adopting newer OpenSSL versions.
+
+
+
+
+ Support Tcl 8.6 in MSVC builds (Álvaro Herrera)
+
+
+
+
+ Sync our copy of the timezone library with IANA release tzcode2017b
+ (Tom Lane)
+
+
+ This fixes a bug affecting some DST transitions in January 2038.
+
+
+
+
+ Update time zone data files to
tzdata release 2017b+ for DST law changes in Chile, Haiti, and Mongolia, plus historical
+ corrections for Ecuador, Kazakhstan, Liberia, and Spain.
+ Switch to numeric abbreviations for numerous time zones in South
+ America, the Pacific and Indian oceans, and some Asian and Middle
+ Eastern countries.
+
+
+ The IANA time zone database previously provided textual abbreviations
+ for all time zones, sometimes making up abbreviations that have little
+ or no currency among the local population. They are in process of
+ reversing that policy in favor of using numeric UTC offsets in zones
+ where there is no evidence of real-world use of an English
+ abbreviation. At least for the time being,
PostgreSQL+ will continue to accept such removed abbreviations for timestamp input.
+ But they will not be shown in the pg_timezone_names
+ view nor used for output.
+
+
+
+
+ Use correct daylight-savings rules for POSIX-style time zone names
+ in MSVC builds (David Rowley)
+
+
+ The Microsoft MSVC build scripts neglected to install
+ the posixrules file in the timezone directory tree.
+ This resulted in the timezone code falling back to its built-in
+ rule about what DST behavior to assume for a POSIX-style time zone
+ name. For historical reasons that still corresponds to the DST rules
+ the USA was using before 2007 (i.e., change on first Sunday in April
+ and last Sunday in October). With this fix, a POSIX-style zone name
+ will use the current and historical DST transition dates of
+ the US/Eastern zone. If you don't want that, remove
+ the posixrules file, or replace it with a copy of some
+ other zone file (see ). Note that
+ due to caching, you may need to restart the server to get such changes
+ to take effect.
+
+
+
+
+
+
+
+
Release 9.2.20
+
+
Release 9.3.17
+
+
+
Release Date
+ 2017-05-11
+
+
+ This release contains a variety of fixes from 9.3.16.
+ For information about new features in the 9.3 major release, see
+ .
+
+
+
+
Migration to Version 9.3.17
+
+ A dump/restore is not required for those running 9.3.X.
+
+
+ However, if you are upgrading from a version earlier than 9.3.16,
+ see .
+
+
+
+
+
+
Changes
+
+
+
+
+ Fix possible corruption of init forks of unlogged indexes
+ (Robert Haas, Michael Paquier)
+
+
+ This could result in an unlogged index being set to an invalid state
+ after a crash and restart. Such a problem would persist until the
+ index was dropped and rebuilt.
+
+
+
+
+ Fix incorrect reconstruction of pg_subtrans entries
+ when a standby server replays a prepared but uncommitted two-phase
+ transaction (Tom Lane)
+
+
+ In most cases this turned out to have no visible ill effects, but in
+ corner cases it could result in circular references
+ in pg_subtrans, potentially causing infinite loops
+ in queries that examine rows modified by the two-phase transaction.
+
+
+
+
+ Ensure parsing of queries in extension scripts sees the results of
+ immediately-preceding DDL (Julien Rouhaud, Tom Lane)
+
+
+ Due to lack of a cache flush step between commands in an extension
+ script file, non-utility queries might not see the effects of an
+ immediately preceding catalog change, such as ALTER TABLE
+ ... RENAME.
+
+
+
+
+ Skip tablespace privilege checks when ALTER TABLE ... ALTER
+ COLUMN TYPE rebuilds an existing index (Noah Misch)
+
+
+ The command failed if the calling user did not currently have
+ CREATE privilege for the tablespace containing the index.
+ That behavior seems unhelpful, so skip the check, allowing the
+ index to be rebuilt where it is.
+
+
+
+
+ Fix ALTER TABLE ... VALIDATE CONSTRAINT to not recurse
+ to child tables when the constraint is marked NO INHERIT
+ (Amit Langote)
+
+
+ This fix prevents unwanted constraint does not exist failures
+ when no matching constraint is present in the child tables.
+
+
+
+
+ Fix VACUUM to account properly for pages that could not
+ be scanned due to conflicting page pins (Andrew Gierth)
+
+
+ This tended to lead to underestimation of the number of tuples in
+ the table. In the worst case of a small heavily-contended
+ table, VACUUM could incorrectly report that the table
+ contained no tuples, leading to very bad planning choices.
+
+
+
+
+ Ensure that bulk-tuple-transfer loops within a hash join are
+ interruptible by query cancel requests (Tom Lane, Thomas Munro)
+
+
+
+
+ Fix cursor_to_xml() to produce valid output
+ with tableforest = false
+ (Thomas Munro, Peter Eisentraut)
+
+
+ Previously it failed to produce a wrapping <table>
+ element.
+
+
+
+
+ Improve performance of pg_timezone_names view
+ (Tom Lane, David Rowley)
+
+
+
+
+ Fix sloppy handling of corner-case errors from lseek()
+ and close() (Tom Lane)
+
+
+ Neither of these system calls are likely to fail in typical situations,
+ but if they did, fd.c could get quite confused.
+
+
+
+
+ Fix incorrect check for whether postmaster is running as a Windows
+ service (Michael Paquier)
+
+
+ This could result in attempting to write to the event log when that
+ isn't accessible, so that no logging happens at all.
+
+
+
+
+ Fix
ecpg to support COMMIT PREPARED+ and ROLLBACK PREPARED (Masahiko Sawada)
+
+
+
+
+ Fix a double-free error when processing dollar-quoted string literals
+ in
ecpg (Michael Meskes)+
+
+
+
+ In
pg_dump, fix incorrect schema and owner marking for+ comments and security labels of some types of database objects
+ (Giuseppe Broccolo, Tom Lane)
+
+
+ In simple cases this caused no ill effects; but for example, a
+ schema-selective restore might omit comments it should include, because
+ they were not marked as belonging to the schema of their associated
+ object.
+
+
+
+
+ Avoid emitting an invalid list file in pg_restore -l
+ when SQL object names contain newlines (Tom Lane)
+
+
+ Replace newlines by spaces, which is sufficient to make the output
+ valid for pg_restore -L's purposes.
+
+
+
+
+ Fix
pg_upgrade to transfer comments and security labels+ attached to large objects (blobs) (Stephen Frost)
+
+
+ Previously, blobs were correctly transferred to the new database, but
+ any comments or security labels attached to them were lost.
+
+
+
+
+ Improve error handling
+ in contrib/adminpack's pg_file_write()
+ function (Noah Misch)
+
+
+ Notably, it failed to detect errors reported
+ by fclose().
+
+
+
+
+ In contrib/dblink, avoid leaking the previous unnamed
+ connection when establishing a new unnamed connection (Joe Conway)
+
+
+
+
+ Fix contrib/pg_trgm's extraction of trigrams from regular
+ expressions (Tom Lane)
+
+
+ In some cases it would produce a broken data structure that could never
+ match anything, leading to GIN or GiST indexscans that use a trigram
+ index not finding any matches to the regular expression.
+
+
+
+
+ In contrib/postgres_fdw,
+ transmit query cancellation requests to the remote server
+ (Michael Paquier, Etsuro Fujita)
+
+
+ Previously, a local query cancellation request did not cause an
+ already-sent remote query to terminate early. This is a back-patch
+ of work originally done for 9.6.
+
+
+
+
+ Support OpenSSL 1.1.0 (Heikki Linnakangas, Andreas Karlsson, Tom Lane)
+
+
+ This is a back-patch of work previously done in newer branches;
+ it's needed since many platforms are adopting newer OpenSSL versions.
+
+
+
+
+ Support Tcl 8.6 in MSVC builds (Álvaro Herrera)
+
+
+
+
+ Sync our copy of the timezone library with IANA release tzcode2017b
+ (Tom Lane)
+
+
+ This fixes a bug affecting some DST transitions in January 2038.
+
+
+
+
+ Update time zone data files to
tzdata release 2017b+ for DST law changes in Chile, Haiti, and Mongolia, plus historical
+ corrections for Ecuador, Kazakhstan, Liberia, and Spain.
+ Switch to numeric abbreviations for numerous time zones in South
+ America, the Pacific and Indian oceans, and some Asian and Middle
+ Eastern countries.
+
+
+ The IANA time zone database previously provided textual abbreviations
+ for all time zones, sometimes making up abbreviations that have little
+ or no currency among the local population. They are in process of
+ reversing that policy in favor of using numeric UTC offsets in zones
+ where there is no evidence of real-world use of an English
+ abbreviation. At least for the time being,
PostgreSQL+ will continue to accept such removed abbreviations for timestamp input.
+ But they will not be shown in the pg_timezone_names
+ view nor used for output.
+
+
+
+
+ Use correct daylight-savings rules for POSIX-style time zone names
+ in MSVC builds (David Rowley)
+
+
+ The Microsoft MSVC build scripts neglected to install
+ the posixrules file in the timezone directory tree.
+ This resulted in the timezone code falling back to its built-in
+ rule about what DST behavior to assume for a POSIX-style time zone
+ name. For historical reasons that still corresponds to the DST rules
+ the USA was using before 2007 (i.e., change on first Sunday in April
+ and last Sunday in October). With this fix, a POSIX-style zone name
+ will use the current and historical DST transition dates of
+ the US/Eastern zone. If you don't want that, remove
+ the posixrules file, or replace it with a copy of some
+ other zone file (see ). Note that
+ due to caching, you may need to restart the server to get such changes
+ to take effect.
+
+
+
+
+
+
+
+
Release 9.3.16
+
+
Release 9.4.12
+
+
+
Release Date
+ 2017-05-11
+
+
+ This release contains a variety of fixes from 9.4.11.
+ For information about new features in the 9.4 major release, see
+ .
+
+
+
+
Migration to Version 9.4.12
+
+ A dump/restore is not required for those running 9.4.X.
+
+
+ However, if you are using third-party replication tools that depend
+ on logical decoding, see the first changelog entry below.
+
+
+ Also, if you are upgrading from a version earlier than 9.4.11,
+ see .
+
+
+
+
+
Changes
+
+
+
+
+ Fix possibly-invalid initial snapshot during logical decoding
+ (Petr Jelinek, Andres Freund)
+
+
+ The initial snapshot created for a logical decoding replication slot
+ was potentially incorrect. This could cause third-party tools that
+ use logical decoding to copy incomplete/inconsistent initial data.
+ This was more likely to happen if the source server was busy at the
+ time of slot creation, or if another logical slot already existed.
+
+
+ If you are using a replication tool that depends on logical decoding,
+ and it should have copied a nonempty data set at the start of
+ replication, it is advisable to recreate the replica after
+ installing this update, or to verify its contents against the source
+ server.
+
+
+
+
+ Fix possible corruption of init forks of unlogged indexes
+ (Robert Haas, Michael Paquier)
+
+
+ This could result in an unlogged index being set to an invalid state
+ after a crash and restart. Such a problem would persist until the
+ index was dropped and rebuilt.
+
+
+
+
+ Fix incorrect reconstruction of pg_subtrans entries
+ when a standby server replays a prepared but uncommitted two-phase
+ transaction (Tom Lane)
+
+
+ In most cases this turned out to have no visible ill effects, but in
+ corner cases it could result in circular references
+ in pg_subtrans, potentially causing infinite loops
+ in queries that examine rows modified by the two-phase transaction.
+
+
+
+
+ Avoid possible crash in
walsender due to failure+ to initialize a string buffer (Stas Kelvich, Fujii Masao)
+
+
+
+
+ Fix postmaster's handling of fork() failure for a
+ background worker process (Tom Lane)
+
+
+ Previously, the postmaster updated portions of its state as though
+ the process had been launched successfully, resulting in subsequent
+ confusion.
+
+
+
+
+ Ensure parsing of queries in extension scripts sees the results of
+ immediately-preceding DDL (Julien Rouhaud, Tom Lane)
+
+
+ Due to lack of a cache flush step between commands in an extension
+ script file, non-utility queries might not see the effects of an
+ immediately preceding catalog change, such as ALTER TABLE
+ ... RENAME.
+
+
+
+
+ Skip tablespace privilege checks when ALTER TABLE ... ALTER
+ COLUMN TYPE rebuilds an existing index (Noah Misch)
+
+
+ The command failed if the calling user did not currently have
+ CREATE privilege for the tablespace containing the index.
+ That behavior seems unhelpful, so skip the check, allowing the
+ index to be rebuilt where it is.
+
+
+
+
+ Fix ALTER TABLE ... VALIDATE CONSTRAINT to not recurse
+ to child tables when the constraint is marked NO INHERIT
+ (Amit Langote)
+
+
+ This fix prevents unwanted constraint does not exist failures
+ when no matching constraint is present in the child tables.
+
+
+
+
+ Fix VACUUM to account properly for pages that could not
+ be scanned due to conflicting page pins (Andrew Gierth)
+
+
+ This tended to lead to underestimation of the number of tuples in
+ the table. In the worst case of a small heavily-contended
+ table, VACUUM could incorrectly report that the table
+ contained no tuples, leading to very bad planning choices.
+
+
+
+
+ Ensure that bulk-tuple-transfer loops within a hash join are
+ interruptible by query cancel requests (Tom Lane, Thomas Munro)
+
+
+
+
+ Fix integer-overflow problems in interval comparison (Kyotaro
+ Horiguchi, Tom Lane)
+
+
+ The comparison operators for type interval could yield wrong
+ answers for intervals larger than about 296000 years. Indexes on
+ columns containing such large values should be reindexed, since they
+ may be corrupt.
+
+
+
+
+ Fix cursor_to_xml() to produce valid output
+ with tableforest = false
+ (Thomas Munro, Peter Eisentraut)
+
+
+ Previously it failed to produce a wrapping <table>
+ element.
+
+
+
+
+ Fix roundoff problems in float8_timestamptz()
+ and make_interval() (Tom Lane)
+
+
+ These functions truncated, rather than rounded, when converting a
+ floating-point value to integer microseconds; that could cause
+ unexpectedly off-by-one results.
+
+
+
+
+ Improve performance of pg_timezone_names view
+ (Tom Lane, David Rowley)
+
+
+
+
+ Reduce memory management overhead for contexts containing many large
+ blocks (Tom Lane)
+
+
+
+
+ Fix sloppy handling of corner-case errors from lseek()
+ and close() (Tom Lane)
+
+
+ Neither of these system calls are likely to fail in typical situations,
+ but if they did, fd.c could get quite confused.
+
+
+
+
+ Fix incorrect check for whether postmaster is running as a Windows
+ service (Michael Paquier)
+
+
+ This could result in attempting to write to the event log when that
+ isn't accessible, so that no logging happens at all.
+
+
+
+
+ Fix
ecpg to support COMMIT PREPARED+ and ROLLBACK PREPARED (Masahiko Sawada)
+
+
+
+
+ Fix a double-free error when processing dollar-quoted string literals
+ in
ecpg (Michael Meskes)+
+
+
+
+ In
pg_dump, fix incorrect schema and owner marking for+ comments and security labels of some types of database objects
+ (Giuseppe Broccolo, Tom Lane)
+
+
+ In simple cases this caused no ill effects; but for example, a
+ schema-selective restore might omit comments it should include, because
+ they were not marked as belonging to the schema of their associated
+ object.
+
+
+
+
+ Avoid emitting an invalid list file in pg_restore -l
+ when SQL object names contain newlines (Tom Lane)
+
+
+ Replace newlines by spaces, which is sufficient to make the output
+ valid for pg_restore -L's purposes.
+
+
+
+
+ Fix
pg_upgrade to transfer comments and security labels+ attached to large objects (blobs) (Stephen Frost)
+
+
+ Previously, blobs were correctly transferred to the new database, but
+ any comments or security labels attached to them were lost.
+
+
+
+
+ Improve error handling
+ in contrib/adminpack's pg_file_write()
+ function (Noah Misch)
+
+
+ Notably, it failed to detect errors reported
+ by fclose().
+
+
+
+
+ In contrib/dblink, avoid leaking the previous unnamed
+ connection when establishing a new unnamed connection (Joe Conway)
+
+
+
+
+ Fix contrib/pg_trgm's extraction of trigrams from regular
+ expressions (Tom Lane)
+
+
+ In some cases it would produce a broken data structure that could never
+ match anything, leading to GIN or GiST indexscans that use a trigram
+ index not finding any matches to the regular expression.
+
+
+
+
+ In contrib/postgres_fdw,
+ transmit query cancellation requests to the remote server
+ (Michael Paquier, Etsuro Fujita)
+
+
+ Previously, a local query cancellation request did not cause an
+ already-sent remote query to terminate early. This is a back-patch
+ of work originally done for 9.6.
+
+
+
+
+
+ Support OpenSSL 1.1.0 (Heikki Linnakangas, Andreas Karlsson, Tom Lane)
+
+
+ This is a back-patch of work previously done in newer branches;
+ it's needed since many platforms are adopting newer OpenSSL versions.
+
+
+
+
+ Support Tcl 8.6 in MSVC builds (Álvaro Herrera)
+
+
+
+
+ Sync our copy of the timezone library with IANA release tzcode2017b
+ (Tom Lane)
+
+
+ This fixes a bug affecting some DST transitions in January 2038.
+
+
+
+
+ Update time zone data files to
tzdata release 2017b+ for DST law changes in Chile, Haiti, and Mongolia, plus historical
+ corrections for Ecuador, Kazakhstan, Liberia, and Spain.
+ Switch to numeric abbreviations for numerous time zones in South
+ America, the Pacific and Indian oceans, and some Asian and Middle
+ Eastern countries.
+
+
+ The IANA time zone database previously provided textual abbreviations
+ for all time zones, sometimes making up abbreviations that have little
+ or no currency among the local population. They are in process of
+ reversing that policy in favor of using numeric UTC offsets in zones
+ where there is no evidence of real-world use of an English
+ abbreviation. At least for the time being,
PostgreSQL+ will continue to accept such removed abbreviations for timestamp input.
+ But they will not be shown in the pg_timezone_names
+ view nor used for output.
+
+
+
+
+ Use correct daylight-savings rules for POSIX-style time zone names
+ in MSVC builds (David Rowley)
+
+
+ The Microsoft MSVC build scripts neglected to install
+ the posixrules file in the timezone directory tree.
+ This resulted in the timezone code falling back to its built-in
+ rule about what DST behavior to assume for a POSIX-style time zone
+ name. For historical reasons that still corresponds to the DST rules
+ the USA was using before 2007 (i.e., change on first Sunday in April
+ and last Sunday in October). With this fix, a POSIX-style zone name
+ will use the current and historical DST transition dates of
+ the US/Eastern zone. If you don't want that, remove
+ the posixrules file, or replace it with a copy of some
+ other zone file (see ). Note that
+ due to caching, you may need to restart the server to get such changes
+ to take effect.
+
+
+
+
+
+
+
+
Release 9.4.11
- Add ability to retrieve the current PL/PgSQL call stack
+ Add ability to retrieve the current PL/pgSQL call stack
using GET
DIAGNOSTICS
(Pavel Stehule, Stephen Frost)
+
+
Release 9.5.7
+
+
+
Release Date
+ 2017-05-11
+
+
+ This release contains a variety of fixes from 9.5.6.
+ For information about new features in the 9.5 major release, see
+ .
+
+
+
+
Migration to Version 9.5.7
+
+ A dump/restore is not required for those running 9.5.X.
+
+
+ However, if you are using third-party replication tools that depend
+ on logical decoding, see the first changelog entry below.
+
+
+ Also, if you are upgrading from a version earlier than 9.5.6,
+ see .
+
+
+
+
+
Changes
+
+
+
+
+ Fix possibly-invalid initial snapshot during logical decoding
+ (Petr Jelinek, Andres Freund)
+
+
+ The initial snapshot created for a logical decoding replication slot
+ was potentially incorrect. This could cause third-party tools that
+ use logical decoding to copy incomplete/inconsistent initial data.
+ This was more likely to happen if the source server was busy at the
+ time of slot creation, or if another logical slot already existed.
+
+
+ If you are using a replication tool that depends on logical decoding,
+ and it should have copied a nonempty data set at the start of
+ replication, it is advisable to recreate the replica after
+ installing this update, or to verify its contents against the source
+ server.
+
+
+
+
+ Fix possible corruption of init forks of unlogged indexes
+ (Robert Haas, Michael Paquier)
+
+
+ This could result in an unlogged index being set to an invalid state
+ after a crash and restart. Such a problem would persist until the
+ index was dropped and rebuilt.
+
+
+
+
+ Fix incorrect reconstruction of pg_subtrans entries
+ when a standby server replays a prepared but uncommitted two-phase
+ transaction (Tom Lane)
+
+
+ In most cases this turned out to have no visible ill effects, but in
+ corner cases it could result in circular references
+ in pg_subtrans, potentially causing infinite loops
+ in queries that examine rows modified by the two-phase transaction.
+
+
+
+
+ Avoid possible crash in
walsender due to failure+ to initialize a string buffer (Stas Kelvich, Fujii Masao)
+
+
+
+
+ Fix possible crash when rescanning a nearest-neighbor index-only scan
+ on a GiST index (Tom Lane)
+
+
+
+
+ Fix postmaster's handling of fork() failure for a
+ background worker process (Tom Lane)
+
+
+ Previously, the postmaster updated portions of its state as though
+ the process had been launched successfully, resulting in subsequent
+ confusion.
+
+
+
+
+
+ Fix crash or wrong answers when a GROUPING SETS column's
+ data type is hashable but not sortable (Pavan Deolasee)
+
+
+
+
+ Avoid applying physical targetlist optimization to custom
+ scans (Dmitry Ivanov, Tom Lane)
+
+
+ This optimization supposed that retrieving all columns of a tuple
+ is inexpensive, which is true for ordinary Postgres tuples; but it
+ might not be the case for a custom scan provider.
+
+
+
+
+ Use the correct sub-expression when applying a FOR ALL
+ row-level-security policy (Stephen Frost)
+
+
+ In some cases the WITH CHECK restriction would be applied
+ when the USING restriction is more appropriate.
+
+
+
+
+ Ensure parsing of queries in extension scripts sees the results of
+ immediately-preceding DDL (Julien Rouhaud, Tom Lane)
+
+
+ Due to lack of a cache flush step between commands in an extension
+ script file, non-utility queries might not see the effects of an
+ immediately preceding catalog change, such as ALTER TABLE
+ ... RENAME.
+
+
+
+
+ Skip tablespace privilege checks when ALTER TABLE ... ALTER
+ COLUMN TYPE rebuilds an existing index (Noah Misch)
+
+
+ The command failed if the calling user did not currently have
+ CREATE privilege for the tablespace containing the index.
+ That behavior seems unhelpful, so skip the check, allowing the
+ index to be rebuilt where it is.
+
+
+
+
+ Fix ALTER TABLE ... VALIDATE CONSTRAINT to not recurse
+ to child tables when the constraint is marked NO INHERIT
+ (Amit Langote)
+
+
+ This fix prevents unwanted constraint does not exist failures
+ when no matching constraint is present in the child tables.
+
+
+
+
+ Avoid dangling pointer in COPY ... TO when row-level
+ security is active for the source table (Tom Lane)
+
+
+ Usually this had no ill effects, but sometimes it would cause
+ unexpected errors or crashes.
+
+
+
+
+ Avoid accessing an already-closed relcache entry in CLUSTER
+ and VACUUM FULL (Tom Lane)
+
+
+ With some bad luck, this could lead to indexes on the target
+ relation getting rebuilt with the wrong persistence setting.
+
+
+
+
+ Fix VACUUM to account properly for pages that could not
+ be scanned due to conflicting page pins (Andrew Gierth)
+
+
+ This tended to lead to underestimation of the number of tuples in
+ the table. In the worst case of a small heavily-contended
+ table, VACUUM could incorrectly report that the table
+ contained no tuples, leading to very bad planning choices.
+
+
+
+
+ Ensure that bulk-tuple-transfer loops within a hash join are
+ interruptible by query cancel requests (Tom Lane, Thomas Munro)
+
+
+
+
+ Fix integer-overflow problems in interval comparison (Kyotaro
+ Horiguchi, Tom Lane)
+
+
+ The comparison operators for type interval could yield wrong
+ answers for intervals larger than about 296000 years. Indexes on
+ columns containing such large values should be reindexed, since they
+ may be corrupt.
+
+
+
+
+ Fix cursor_to_xml() to produce valid output
+ with tableforest = false
+ (Thomas Munro, Peter Eisentraut)
+
+
+ Previously it failed to produce a wrapping <table>
+ element.
+
+
+
+
+ Fix roundoff problems in float8_timestamptz()
+ and make_interval() (Tom Lane)
+
+
+ These functions truncated, rather than rounded, when converting a
+ floating-point value to integer microseconds; that could cause
+ unexpectedly off-by-one results.
+
+
+
+
+ Fix pg_get_object_address() to handle members of operator
+ families correctly (Álvaro Herrera)
+
+
+
+
+ Improve performance of pg_timezone_names view
+ (Tom Lane, David Rowley)
+
+
+
+
+ Reduce memory management overhead for contexts containing many large
+ blocks (Tom Lane)
+
+
+
+
+ Fix sloppy handling of corner-case errors from lseek()
+ and close() (Tom Lane)
+
+
+ Neither of these system calls are likely to fail in typical situations,
+ but if they did, fd.c could get quite confused.
+
+
+
+
+ Fix incorrect check for whether postmaster is running as a Windows
+ service (Michael Paquier)
+
+
+ This could result in attempting to write to the event log when that
+ isn't accessible, so that no logging happens at all.
+
+
+
+
+ Fix
ecpg to support COMMIT PREPARED+ and ROLLBACK PREPARED (Masahiko Sawada)
+
+
+
+
+ Fix a double-free error when processing dollar-quoted string literals
+ in
ecpg (Michael Meskes)+
+
+
+
+ In
pg_dump, fix incorrect schema and owner marking for+ comments and security labels of some types of database objects
+ (Giuseppe Broccolo, Tom Lane)
+
+
+ In simple cases this caused no ill effects; but for example, a
+ schema-selective restore might omit comments it should include, because
+ they were not marked as belonging to the schema of their associated
+ object.
+
+
+
+
+ Avoid emitting an invalid list file in pg_restore -l
+ when SQL object names contain newlines (Tom Lane)
+
+
+ Replace newlines by spaces, which is sufficient to make the output
+ valid for pg_restore -L's purposes.
+
+
+
+
+ Fix
pg_upgrade to transfer comments and security labels+ attached to large objects (blobs) (Stephen Frost)
+
+
+ Previously, blobs were correctly transferred to the new database, but
+ any comments or security labels attached to them were lost.
+
+
+
+
+ Improve error handling
+ in contrib/adminpack's pg_file_write()
+ function (Noah Misch)
+
+
+ Notably, it failed to detect errors reported
+ by fclose().
+
+
+
+
+ In contrib/dblink, avoid leaking the previous unnamed
+ connection when establishing a new unnamed connection (Joe Conway)
+
+
+
+
+ Fix contrib/pg_trgm's extraction of trigrams from regular
+ expressions (Tom Lane)
+
+
+ In some cases it would produce a broken data structure that could never
+ match anything, leading to GIN or GiST indexscans that use a trigram
+ index not finding any matches to the regular expression.
+
+
+
+
+
+ In contrib/postgres_fdw,
+ transmit query cancellation requests to the remote server
+ (Michael Paquier, Etsuro Fujita)
+
+
+ Previously, a local query cancellation request did not cause an
+ already-sent remote query to terminate early. This is a back-patch
+ of work originally done for 9.6.
+
+
+
+
+ Support Tcl 8.6 in MSVC builds (Álvaro Herrera)
+
+
+
+
+ Sync our copy of the timezone library with IANA release tzcode2017b
+ (Tom Lane)
+
+
+ This fixes a bug affecting some DST transitions in January 2038.
+
+
+
+
+ Update time zone data files to
tzdata release 2017b+ for DST law changes in Chile, Haiti, and Mongolia, plus historical
+ corrections for Ecuador, Kazakhstan, Liberia, and Spain.
+ Switch to numeric abbreviations for numerous time zones in South
+ America, the Pacific and Indian oceans, and some Asian and Middle
+ Eastern countries.
+
+
+ The IANA time zone database previously provided textual abbreviations
+ for all time zones, sometimes making up abbreviations that have little
+ or no currency among the local population. They are in process of
+ reversing that policy in favor of using numeric UTC offsets in zones
+ where there is no evidence of real-world use of an English
+ abbreviation. At least for the time being,
PostgreSQL+ will continue to accept such removed abbreviations for timestamp input.
+ But they will not be shown in the pg_timezone_names
+ view nor used for output.
+
+
+
+
+ Use correct daylight-savings rules for POSIX-style time zone names
+ in MSVC builds (David Rowley)
+
+
+ The Microsoft MSVC build scripts neglected to install
+ the posixrules file in the timezone directory tree.
+ This resulted in the timezone code falling back to its built-in
+ rule about what DST behavior to assume for a POSIX-style time zone
+ name. For historical reasons that still corresponds to the DST rules
+ the USA was using before 2007 (i.e., change on first Sunday in April
+ and last Sunday in October). With this fix, a POSIX-style zone name
+ will use the current and historical DST transition dates of
+ the US/Eastern zone. If you don't want that, remove
+ the posixrules file, or replace it with a copy of some
+ other zone file (see ). Note that
+ due to caching, you may need to restart the server to get such changes
+ to take effect.
+
+
+
+
+
+
+
+
Release 9.5.6
+
+
Release 9.6.3
+
+
+
Release Date
+ 2017-05-11
+
+
+ This release contains a variety of fixes from 9.6.2.
+ For information about new features in the 9.6 major release, see
+ .
+
+
+
+
Migration to Version 9.6.3
+
+ A dump/restore is not required for those running 9.6.X.
+
+
+ However, if you are using third-party replication tools that depend
+ on logical decoding, see the first changelog entry below.
+
+
+ Also, if you are upgrading from a version earlier than 9.6.2,
+ see .
+
+
+
+
+
Changes
+
+
+
+
+
+ Fix possibly-invalid initial snapshot during logical decoding
+ (Petr Jelinek, Andres Freund)
+
+
+ The initial snapshot created for a logical decoding replication slot
+ was potentially incorrect. This could cause third-party tools that
+ use logical decoding to copy incomplete/inconsistent initial data.
+ This was more likely to happen if the source server was busy at the
+ time of slot creation, or if another logical slot already existed.
+
+
+ If you are using a replication tool that depends on logical decoding,
+ and it should have copied a nonempty data set at the start of
+ replication, it is advisable to recreate the replica after
+ installing this update, or to verify its contents against the source
+ server.
+
+
+
+
+
+ Fix possible corruption of init forks of unlogged indexes
+ (Robert Haas, Michael Paquier)
+
+
+ This could result in an unlogged index being set to an invalid state
+ after a crash and restart. Such a problem would persist until the
+ index was dropped and rebuilt.
+
+
+
+
+
+ Fix incorrect reconstruction of pg_subtrans entries
+ when a standby server replays a prepared but uncommitted two-phase
+ transaction (Tom Lane)
+
+
+ In most cases this turned out to have no visible ill effects, but in
+ corner cases it could result in circular references
+ in pg_subtrans, potentially causing infinite loops
+ in queries that examine rows modified by the two-phase transaction.
+
+
+
+
+
+ Avoid possible crash in
walsender due to failure+ to initialize a string buffer (Stas Kelvich, Fujii Masao)
+
+
+
+
+
+ Fix possible crash when rescanning a nearest-neighbor index-only scan
+ on a GiST index (Tom Lane)
+
+
+
+
+
+ Prevent delays in postmaster's launching of multiple parallel worker
+ processes (Tom Lane)
+
+
+ There could be a significant delay (up to tens of seconds) before
+ satisfying a query's request for more than one worker process, or when
+ multiple queries requested workers simultaneously. On most platforms
+ this required unlucky timing, but on some it was the typical case.
+
+
+
+
+
+ Fix postmaster's handling of fork() failure for a
+ background worker process (Tom Lane)
+
+
+ Previously, the postmaster updated portions of its state as though
+ the process had been launched successfully, resulting in subsequent
+ confusion.
+
+
+
+
+
+ Fix possible no relation entry for relid 0 error when
+ planning nested set operations (Tom Lane)
+
+
+
+
+
+ Fix assorted minor issues in planning of parallel queries (Robert Haas)
+
+
+
+
+
+ Avoid applying physical targetlist optimization to custom
+ scans (Dmitry Ivanov, Tom Lane)
+
+
+ This optimization supposed that retrieving all columns of a tuple
+ is inexpensive, which is true for ordinary Postgres tuples; but it
+ might not be the case for a custom scan provider.
+
+
+
+
+
+ Use the correct sub-expression when applying a FOR ALL
+ row-level-security policy (Stephen Frost)
+
+
+ In some cases the WITH CHECK restriction would be applied
+ when the USING restriction is more appropriate.
+
+
+
+
+
+ Ensure parsing of queries in extension scripts sees the results of
+ immediately-preceding DDL (Julien Rouhaud, Tom Lane)
+
+
+ Due to lack of a cache flush step between commands in an extension
+ script file, non-utility queries might not see the effects of an
+ immediately preceding catalog change, such as ALTER TABLE
+ ... RENAME.
+
+
+
+
+
+ Skip tablespace privilege checks when ALTER TABLE ... ALTER
+ COLUMN TYPE rebuilds an existing index (Noah Misch)
+
+
+ The command failed if the calling user did not currently have
+ CREATE privilege for the tablespace containing the index.
+ That behavior seems unhelpful, so skip the check, allowing the
+ index to be rebuilt where it is.
+
+
+
+
+
+ Fix ALTER TABLE ... VALIDATE CONSTRAINT to not recurse
+ to child tables when the constraint is marked NO INHERIT
+ (Amit Langote)
+
+
+ This fix prevents unwanted constraint does not exist failures
+ when no matching constraint is present in the child tables.
+
+
+
+
+
+ Avoid dangling pointer in COPY ... TO when row-level
+ security is active for the source table (Tom Lane)
+
+
+ Usually this had no ill effects, but sometimes it would cause
+ unexpected errors or crashes.
+
+
+
+
+
+ Avoid accessing an already-closed relcache entry in CLUSTER
+ and VACUUM FULL (Tom Lane)
+
+
+ With some bad luck, this could lead to indexes on the target
+ relation getting rebuilt with the wrong persistence setting.
+
+
+
+
+
+ Fix VACUUM to account properly for pages that could not
+ be scanned due to conflicting page pins (Andrew Gierth)
+
+
+ This tended to lead to underestimation of the number of tuples in
+ the table. In the worst case of a small heavily-contended
+ table, VACUUM could incorrectly report that the table
+ contained no tuples, leading to very bad planning choices.
+
+
+
+
+
+ Ensure that bulk-tuple-transfer loops within a hash join are
+ interruptible by query cancel requests (Tom Lane, Thomas Munro)
+
+
+
+
+
+ Fix incorrect support for certain box operators in SP-GiST
+ (Nikita Glukhov)
+
+
+ SP-GiST index scans using the operators &<
+ &> &<| and |&>
+ would yield incorrect answers.
+
+
+
+
+
+ Fix integer-overflow problems in interval comparison (Kyotaro
+ Horiguchi, Tom Lane)
+
+
+ The comparison operators for type interval could yield wrong
+ answers for intervals larger than about 296000 years. Indexes on
+ columns containing such large values should be reindexed, since they
+ may be corrupt.
+
+
+
+
+
+ Fix cursor_to_xml() to produce valid output
+ with tableforest = false
+ (Thomas Munro, Peter Eisentraut)
+
+
+ Previously it failed to produce a wrapping <table>
+ element.
+
+
+
+
+
+ Fix roundoff problems in float8_timestamptz()
+ and make_interval() (Tom Lane)
+
+
+ These functions truncated, rather than rounded, when converting a
+ floating-point value to integer microseconds; that could cause
+ unexpectedly off-by-one results.
+
+
+
+
+
+ Fix pg_get_object_address() to handle members of operator
+ families correctly (Álvaro Herrera)
+
+
+
+
+
+ Fix cancelling of pg_stop_backup() when attempting to stop
+ a non-exclusive backup (Michael Paquier, David Steele)
+
+
+ If pg_stop_backup() was cancelled while waiting for a
+ non-exclusive backup to end, related state was left inconsistent;
+ a new exclusive backup could not be started, and there were other minor
+ problems.
+
+
+
+
+
+ Improve performance of pg_timezone_names view
+ (Tom Lane, David Rowley)
+
+
+
+
+
+ Reduce memory management overhead for contexts containing many large
+ blocks (Tom Lane)
+
+
+
+
+
+ Fix sloppy handling of corner-case errors from lseek()
+ and close() (Tom Lane)
+
+
+ Neither of these system calls are likely to fail in typical situations,
+ but if they did, fd.c could get quite confused.
+
+
+
+
+
+ Fix incorrect check for whether postmaster is running as a Windows
+ service (Michael Paquier)
+
+
+ This could result in attempting to write to the event log when that
+ isn't accessible, so that no logging happens at all.
+
+
+
+
+
+ Fix
ecpg to support COMMIT PREPARED+ and ROLLBACK PREPARED (Masahiko Sawada)
+
+
+
+
+
+ Fix a double-free error when processing dollar-quoted string literals
+ in
ecpg (Michael Meskes)+
+
+
+
+
+ Fix
pgbench to handle the combination+ of
+ (Fabien Coelho)
+
+
+
+
+
+ Fix
pgbench to honor the long-form option+ spelling
+
+
+
+
+
+ Fix
pg_dump/pg_restore to correctly+ handle privileges for the public schema when
+ using
+
+
+ Other schemas start out with no privileges granted,
+ but public does not; this requires special-case treatment
+ when it is dropped and restored due to the
+
+
+
+
+
+ In
pg_dump, fix incorrect schema and owner marking for+ comments and security labels of some types of database objects
+ (Giuseppe Broccolo, Tom Lane)
+
+
+ In simple cases this caused no ill effects; but for example, a
+ schema-selective restore might omit comments it should include, because
+ they were not marked as belonging to the schema of their associated
+ object.
+
+
+
+
+
+ Fix typo in
pg_dump's query for initial privileges+ of a procedural language (Peter Eisentraut)
+
+
+ This resulted in
pg_dump always believing that the+ language had no initial privileges. Since that's true for most
+ procedural languages, ill effects from this bug are probably rare.
+
+
+
+
+
+ Avoid emitting an invalid list file in pg_restore -l
+ when SQL object names contain newlines (Tom Lane)
+
+
+ Replace newlines by spaces, which is sufficient to make the output
+ valid for pg_restore -L's purposes.
+
+
+
+
+
+ Fix
pg_upgrade to transfer comments and security labels+ attached to large objects (blobs) (Stephen Frost)
+
+
+ Previously, blobs were correctly transferred to the new database, but
+ any comments or security labels attached to them were lost.
+
+
+
+
+
+ Improve error handling
+ in contrib/adminpack's pg_file_write()
+ function (Noah Misch)
+
+
+ Notably, it failed to detect errors reported
+ by fclose().
+
+
+
+
+
+ In contrib/dblink, avoid leaking the previous unnamed
+ connection when establishing a new unnamed connection (Joe Conway)
+
+
+
+
+
+ Fix contrib/pg_trgm's extraction of trigrams from regular
+ expressions (Tom Lane)
+
+
+ In some cases it would produce a broken data structure that could never
+ match anything, leading to GIN or GiST indexscans that use a trigram
+ index not finding any matches to the regular expression.
+
+
+
+
+
+ In contrib/postgres_fdw, allow join conditions that
+ contain shippable extension-provided functions to be pushed to the
+ remote server (David Rowley, Ashutosh Bapat)
+
+
+
+
+
+ Support Tcl 8.6 in MSVC builds (Álvaro Herrera)
+
+
+
+
+
+ Sync our copy of the timezone library with IANA release tzcode2017b
+ (Tom Lane)
+
+
+ This fixes a bug affecting some DST transitions in January 2038.
+
+
+
+
+
+ Update time zone data files to
tzdata release 2017b+ for DST law changes in Chile, Haiti, and Mongolia, plus historical
+ corrections for Ecuador, Kazakhstan, Liberia, and Spain.
+ Switch to numeric abbreviations for numerous time zones in South
+ America, the Pacific and Indian oceans, and some Asian and Middle
+ Eastern countries.
+
+
+ The IANA time zone database previously provided textual abbreviations
+ for all time zones, sometimes making up abbreviations that have little
+ or no currency among the local population. They are in process of
+ reversing that policy in favor of using numeric UTC offsets in zones
+ where there is no evidence of real-world use of an English
+ abbreviation. At least for the time being,
PostgreSQL+ will continue to accept such removed abbreviations for timestamp input.
+ But they will not be shown in the pg_timezone_names
+ view nor used for output.
+
+
+
+
+
+ Use correct daylight-savings rules for POSIX-style time zone names
+ in MSVC builds (David Rowley)
+
+
+ The Microsoft MSVC build scripts neglected to install
+ the posixrules file in the timezone directory tree.
+ This resulted in the timezone code falling back to its built-in
+ rule about what DST behavior to assume for a POSIX-style time zone
+ name. For historical reasons that still corresponds to the DST rules
+ the USA was using before 2007 (i.e., change on first Sunday in April
+ and last Sunday in October). With this fix, a POSIX-style zone name
+ will use the current and historical DST transition dates of
+ the US/Eastern zone. If you don't want that, remove
+ the posixrules file, or replace it with a copy of some
+ other zone file (see ). Note that
+ due to caching, you may need to restart the server to get such changes
+ to take effect.
+
+
+
+
+
+
+
+
Release 9.6.2
-->
Transmit query cancellation requests to the remote server
- (Michael Paquier)
+ (Michael Paquier, Etsuro Fujita)
projects / postgresql.git / commitdiff