'enq: TX - contention' Contention Seen When Trying to Execute "ALTER TABLE <table_name> ENABLE TABLE LOCK;"
(Doc ID 857975.1)
Last updated on MARCH 03, 2022
Applies to:
Oracle Database - Enterprise Edition - Version 10.2.0.4 and laterOracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
- ALTER TABLE <table_name> ENABLE TABLE LOCK; appears to hang indefinately taking a significant amount of time if it ever completes
- ALTER TABLE <table_name> DISABLE TABLE LOCK;works fine
- While waiting for the "ENABLE" to complete, considerable waits for 'enq: TX - contention' is noticed.
Cause
To view full details, sign in with your My Oracle Support account. |
|
Don't have a My Oracle Support account? Click to get started! |
In this Document
Symptoms |
Cause |
Solution |
References |