7.7.6.8 DROP PMEMLOG

Purpose

The DROP PMEMLOG command removes PMEM log from a cell disk.

Note:

The DROP PMEMLOG command can only be used on Exadata X8M and X9M storage server models.

Syntax

DROP PMEMLOG [FORCE]

Usage Notes

• You can use the DROP PMEMLOG command at run-time, but the command does not complete until all redo data on PMEM is flushed to disk.

• If FORCE is not specified, then the DROP PMEMLOG command fails if there is any saved redo. If FORCE is specified, then all data is purged, and PMEM log is removed.

  Caution:

  If you are unable to drop the PMEM log due to existing redo information in the log, then retry the command first, before using the FORCE option. The FORCE option should only be used in extreme circumstances because it may cause redo log copies to be out of sync, possibly resulting in database redo data corruption. Contact Oracle Support Services for additional information.

• On Exadata X8M and X9M systems with Oracle Exadata System Software release 23.1.0, you can interchangeably use DROP XRMEMLOG instead of DROP PMEMLOG.

Example 7-132 Removing PMEM Log from a Storage Server

This example shows how to remove PMEM log from a storage server.

CellCLI> DROP PMEMLOG