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Performance Degradation: Sessions Are Getting Overloaded Using JDBC Call USER_TYPE_ATTRS (Doc ID 2518798.1)

Last updated on OCTOBER 16, 2019

Applies to:

JDBC - Version 12.2.0.0.0 and later
Information in this document applies to any platform.

Symptoms

On : 12.2.0.0.0 version, Thin JDBC driver

ACTUAL BEHAVIOR
---------------

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 :



Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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