ERROR: ORA-600  [a] [b] [c] [d] [e] VERSIONS: versions 7.3 to 9.2 DESCRIPTION: ORA-600  is getting raised while trying to add a row cache enqueue to a transaction state object during lookup of the default tablespace number during table creation. FUNCTIONALITY: STATE OBJECT MANAGEMENT IMPACT: PROCESS FAILURE NON CORRUPTIVE - No underlying data corruption. Bug 2489130 - OERI:1112 can occur while dumping PROCESSSTATE informatio (Doc ID 2489130.8) Bug 4126973: ORA-600 AND ORA-600 OCCURED WHEN GETTING "ERRORSTACK" Base Bug 2489130 Bug 3954753: ORA-600  AND SESSION CRASH The cause for the ORA-00600  appears due to Bug 2489130 This error can occur on dumping of process state which is what occurred here. The primary issue is the WAITED TOO LONG FOR A ROW CACHE ENQUEUE LOCK! This then triggers a system state and process state to be dumped due to nature of the problem. The ORA-00600  gets dumped out when process state is done. Stack for trace very similar to Bug 2489130 and this is only known bug on 9.2 like this with a fix. A fix for bug 2489130 is included in the 184.108.40.206 patchset. Recommend applying 220.127.116.11 patchset to have this and other bug fixes. This would only prevent the ORA-00600  from occurring on state dumps. The primary row cache issue still to be investigated by performance team.