Compacting a Suffix

Directory Server 11g Release 1 (11.1.1.5.0) supports the compaction of suffixes offline. Online compaction is not supported in this release. If storage space is available, compacting a suffix reduces the size of the database by reorganizing the database keys, and returns the storage space to the filesystem, if possible. Compacting a suffix also reduces the disk footprint. Since application data is not processed and based on the way the database keys are managed, it is not guaranteed that the storage space can be reclaimed. Nevertheless database size will not grow.

To Compact a Suffix Offline

Before You Begin

• Be sure you have sufficient disk space.

  Compacting a suffix requires free disk space equal to at least twice the size of the largest suffix to be compacted. The free disk space is needed for temporary files. For example, to compact the following three suffixes :

  o=suffix1 : 300 Gb 
  o=suffix2 : 170 Gb 
  o=suffix3 : 633 Gb

  The server requires at least 633 * 2, or 1266 Gb, of free disk space.

• Stop the server and back up your database before performing this task.

• Compact the required suffix.

  $ dsadm repack instance-path suffix-dn

  All .db3 files related to the specified suffix are compacted.

  If you run this command with the -b option, you can specify a backend database name, instead of a suffix DN. At least one suffix, or one backend must be specified.

  For more information, see the dsadm(1M)man page.