Error
ORA-08103 object no longer exists
Cause
1: Database corruption of a header block.
2: Accidental delete of the target table. (check the recyclebin)
3: Data file I/O error (check alert log)
4: corruption in UNDO log (drop and re-create)
5. An index is disabled or is offline.
6. Rebuild index job is running for tables and indexes used in error raised query.
Solution
6. Check process/report/query after completed rebuild index.
For other cause contact to Production DBA team, they will contact to Oracle global support.
