The ADM<SID> Database
The ADM<SID> database is the core component of the SAP-DB2admin. It contains administration management data, configuration parameters, and administration action protocols.
The contents of ADM<SID> are mirrored on a regular basis to the R/3 database <SID> by a scheduled job. (For more information, see the CCMS documentation). However, the database requires very little administrative attention. The database administrator can decide whether or not to back it up. However, this is not strictly necessary as it is mirrored to the <SID> database and can be rebuilt from there. Even transaction logging is circular (that is, LOGRETAIN is set to OFF and USEREXIT is set to OFF) for the ADM<SID> database.