## OMS version is old

OMS version <OMS_version_ID> is <hours> hours old, uses <number> KB

### Explanation

This message can occur for liveCache instances only.

OMS versions are often open for long periods of time and occupy memory in the OMS heap. The number of history pages (links to undo log entries for the object) increases in the data cache and on the hard disc.

### User Response

Find out the OMS version and the fill level of the data cache.

If the fill level of the data cache and the percentage of the history pages are high, try and find out the cause.

Check whether the reports /SAPAPO/OM_REORG_DAILY and /SAPAPO/OM_DELETE_OLD_SIMSESS are being executed at regular intervals (see also Monitoring OMS Versions).

See also:

Concepts of the Database System, History Management