Deadlock For DC_USERS Is Not Detected on RAC environment
(Doc ID 2752003.1)
Last updated on APRIL 17, 2023
Applies to:
Oracle Database - Standard Edition - Version 12.2.0.1 and laterInformation in this document applies to any platform.
Symptoms
The deadlock for dc_users is note detected automatically on RAC environment.
By such a symptom, DDL operations which require dc_users will be hunged.
Example)
ALTER DATABASE DEFAULT TEMPORARY TABLESPACE <temporary tablespace name>;
When the issue is occured, a session will be waitng as "waiting for 'row cache lock'" of dc_users for long periods.
Also, a blocker is waiting for a waited session. However, the deadlock is not detected automatically and errors like ORA-60 is not happend.
Changes
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |