Imminent danger, God help us!
A very serious vulnerability associated with the DBMS_JVM_EXP_PERMS package has been made public, which opens the door to unpredictable damage.
SYSTEM tablespace is full with audit records? Move it to another tablespace!
Procedure to migrate Oracle audit logs to a tablespace other than SYSTEM, using the DBMS_AUDIT_MGMT package.
Deleted the OraInventory? Not all is lost
Learn how to recreate a corrupted or deleted Oracle oraInventory, using runInstaller to attach the Oracle Homes.
My table is gone, confess: who did it?
You notice that a table has disappeared. You can use Logminer to find out who dropped it.
Missing archivelog? Do not rebuild your standby database
The synchronization of the physical standby in Oracle has halted, and you don’t have the required archivedlogs? It is still possible to synchronize without having to rebuild it; learn how.
Troubleshoot: data guard synchronization stuck with error ORA-01274
How to deal with ORA 01274 error in Oracle, after adding a datafile in primary site, causing standby to stop synchronizing