Library Cache Lock and Library Cache Pin wait on Sessions While Executing PL/SQL Package in Parallel
(Doc ID 1445658.1)
Last updated on JULY 05, 2021
Applies to:
Oracle Database - Enterprise Edition - Version 10.2.0.5 and laterOracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
- Sessions are hanging waiting for "library cache pin" while executing a PL/ SQL package which performs a MERGE
- The Merge is executed in Parallel
- The sessions are blocked by each other as seen below :
select sid,inst_id,event,blocking_session from gv$session;
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |