Processing MODPLSQL Application Crashes Database with ORA-04030 / ORA-04031 Out of Process Memory Errors
(Doc ID 1532032.1)
Last updated on OCTOBER 17, 2023
Applies to:
Oracle HTTP Server - Version 9.0.2.2 and laterOracle Database - Enterprise Edition - Version 10.2.0.1 and later
PL/SQL - Version 10.2.0.1 and later
Portal - Version 9.0.2.2 and later
Information in this document applies to any platform.
Symptoms
Oracle Database is crashing periodically with the following errors in the Database alert log:
Database alert log will be located in a place such as <DIR>/alert_SID.log
Changes
When first getting ORA-04030 errors, you should review your application code to determine if pl/sql collections or use of pl/sql variables leads to high memory usage. The trace or incident file should have the sql or pl/sql that was running at time of error. This memory growth can be controlled by good programming practices. As an example, use LIMIT clause with BULK COLLECT.
References:
http://www.oracle.com/technetwork/issue-archive/2008/08-mar/o28plsql-095155.html
Process sizes can be monitored via sql against database views as listed in <Note 399497.1> FAQ: ORA-4030 [Video]
The problem continues in spite of efforts to tune for load or custom code optimization.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |