Modifying CURSOR_SHARING Parameter In One Pluggable Database Influences Other PDBs
(Doc ID 2258739.1)
Last updated on FEBRUARY 19, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Oracle Database Cloud Schema 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
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.
- Setting CURSOR_SHARING = FORCE parameter in one of the pluggable databases in an multitenant environment influences other PDBs as well.
- The CDB does not have the CURSOR_SHARING set to FORCE, it is set to default as EXACT.
- This weird behavior of CURSOR_SHARING mechanism among the PDBs is creating performance issues among the PDBs.
Upgraded the database to 12c with CDB enabled.
Changed the parameter CURSOR_SHARING to FORCE in one PDB only.
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