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Ora-7445 [Kghfrf+154] (Doc ID 432576.1)

Last updated on APRIL 06, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Oracle Database Exadata 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
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

Receiving the following error in Enterprise Manager logs:

ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [kghfrf+154] [PC:
0x4F12EC2] [ADDR:0x1C56E69C] [UNABLE_TO_READ] []~

Current SQL statement for this session shows:
begin MGMT_JOB_ENGINE.get_scheduled_steps(:1, :2, :3, :4); end;

Stack Function shows:
kghfrf ptddrp perdcs peidcs kkxcls kxsClean kxsCloseXsc kksCloseCursor

O/S info shows program: OMS

Changes

The problem is occurring during the cleanup of a shared server process that is already marked dead. It has problems freeing memory associated with a hash table, probably due to a memory corruption.

Looks like forcing the OMS to use dedicated server connections rather than shared servers (MTS) prevents the problem from occurring.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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