To Troubleshoot a Database Problem

1. If the server refuses to start, remove the guardian file and all shared memory files while the server is offline and then retry a new start.

   # install-path/instance-name/db/guardian # install-path/instance-name/db/_db.00*

   If the start succeeds and the database still cannot be loaded, continue with this procedure.

2. Backup up all database file stored in the db/ directory.

3. Collect error and access log files from the time during which the database was inaccessible.

   # install-path/instance-name/logs/errors* # install-path/instance-name/access*