12th September 2019: PostgreSQL 12 Beta 4 Released!
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31.3. Closing a Connection

To close a connection, use the following statement:

EXEC SQL DISCONNECT [connection];

The connection can be specified in the following ways:

  • connection-name

  • DEFAULT

  • CURRENT

  • ALL

If no connection name is specified, the current connection is closed.

It is good style that an application always explicitly disconnect from every connection it opened.