- endterm="sql-dropuser-title"> and for
- discussions of potential problems and error messages.
- The database server must be running at the
- targeted host. Also, any default connection settings and environment
- variables used by the
libpq front-end
- library will apply.
-
-
+
+
Diagnostics
+
+ In case of difficulty, see
+ endterm="sql-dropuser-title"> and for
+ discussions of potential problems and error messages.
+ The database server must be running at the
+ targeted host. Also, any default connection settings and environment
+ variables used by the
libpq front-end
+ library will apply.
+
+
+
+
+
Examples
Examples
- Configure and execute a listen/notify sequence from
psql:
+ Configure and execute a listen/notify sequence from
+
LISTEN virtual;
NOTIFY virtual;
LISTEN virtual;
NOTIFY virtual;
-Asynchronous NOTIFY 'virtual' from backend with pid '8448' received.
+Asynchronous notification "virtual" received from server process with PID 8448.
LISTEN virtual;
NOTIFY virtual;
-Asynchronous NOTIFY 'virtual' from backend with pid '8448' received
+Asynchronous notification "virtual" received from server process with PID 8448.
- Once UNLISTEN> has been executed, further NOTIFY> commands will be
- ignored:
+ Once UNLISTEN> has been executed, further NOTIFY>
+ commands will be ignored:
UNLISTEN virtual;
this utility and via other methods for accessing the server.
- In case of difficulty, see
- endterm="sql-vacuum-title"> and for
- discussions of potential problems and error messages.
- The database server must be running at the
- targeted host. Also, any default connection settings and environment
- variables used by the
libpq front-end
- library will apply.
-
-
-
vacuumdb might need to connect several
- times to the
PostgreSQL server, asking
- for a password each time. It is convenient to have a
-
$HOME/.pgpass> file in such cases. See
- linkend="libpq-pgpass"> for more information.
-
-
+
+
Diagnostics
+
+ In case of difficulty, see
+ endterm="sql-vacuum-title"> and for
+ discussions of potential problems and error messages.
+ The database server must be running at the
+ targeted host. Also, any default connection settings and environment
+ variables used by the
libpq front-end
+ library will apply.
+
+
+
+
+
+
+
Notes
+
+
vacuumdb might need to connect several
+ times to the
PostgreSQL server, asking
+ for a password each time. It is convenient to have a
+
$HOME/.pgpass> file in such cases. See
+ linkend="libpq-pgpass"> for more information.
+
+
+
Examples