By default, the log files in the wal directory that are backed up during a backup operation are not deleted after the backup job. If you want, you can delete these backed up log files after a backup by selecting the Archive Delete check box at the instance level.
Note
The backup log file deletion is only supported for FSBased backups.
Procedure
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From the CommCell Browser, navigate to <Client> | PostgreSQL.
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Right-click the <Instance>, and then click Properties.
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Click the Log Backup tab.
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Select the Archive Delete check box.
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Click OK.