Type: string
Context: sighup
Restart: false
Since: 15

The library to use for archiving completed WAL file segments. If set to an empty string (the default), archiving via shell is enabled, and archive_command is used. Otherwise, the specified shared library is used for archiving. The WAL archiver process is restarted by the postmaster when this parameter changes. For more information, see backup-archiving-wal and archive-modules.

This parameter can only be set in the postgresql.conf file or on the server command line.

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