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AHF 19.0/19.1 will cause memory leak which may end up node/Instance crash with different symptom (Doc ID 2652179.1)

Last updated on APRIL 01, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 and later
Information in this document applies to any platform.
This will happen on ODA 18.8 which using AHF. But it is not limit to ODA 18.8
ANy customer using AFH 19.0/19.1 may hit the same issue.

Symptoms

1. Node crash because of heavy swap.

2. Instance crash because of waiting on rtnl_lock call.

In OSW memino we can find:

zzz ***Sun Jan 19 11:38:28 CET 2020
MemFree: 4196208 kB
Slab: 148723752 kB  <-- 140G

dentry 7423450 7423794

Slab is using huge number of memory.  Every we have free memory but the related memory is heavily fragmented.  Also dentry number is huge.

Changes

Start to use AHF 19.0 or 19.1

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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