Performance Degradation: Sessions Are Getting Overloaded Using JDBC Call USER_TYPE_ATTRS
(Doc ID 2518798.1)
Last updated on OCTOBER 31, 2022
Applies to:JDBC - Version 220.127.116.11.0 and later
Information in this document applies to any platform.
On : 18.104.22.168.0 version, Thin JDBC driver
Performance degradation: sessions are getting overloaded using the JDBC call USER_TYPE_ATTRS .
A legacy application has been migrated into Fusion Middleware (FMW) 12c.
The flow involves invoking PL/SQL stored procedures with table types in IN OUT parameters.
Testing with peak load shows ADT-related SQL taking over 57 seconds resulting in all connections backing up.
The following query is observed to be running :
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