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Bug 159195 - Hugepages does not get allocated for Oracle 10g
Hugepages does not get allocated for Oracle 10g
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Larry Woodman
Brian Brock
: 159154 159207 (view as bug list)
Depends On:
  Show dependency treegraph
Reported: 2005-05-31 09:35 EDT by Boris Mironov
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2005-06-07 15:44:02 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Boris Mironov 2005-05-31 09:35:00 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)

Description of problem:
Oracle 10g database is certified to run on RHEL4 with no changes.
Unfortunately, my system can not use settings that work fine under RHEL3. Namely, I was able to use hugepages.

Under RHEL4 'cat /proc/meminfo' shows no usage of hugepages after Oracle instance starts. At same time a lot of swapping take place.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. start kernel with hugepages=500 parameter
2. start Oracle 10g

Actual Results:  /proc/meminfo shows no usage of hugepages

Expected Results:  some hugepages should be allocated by Oracle instance

Additional info:

Regarding to numerous postings about SLES9 kernel 2.6 works fine for Oracle inside hugepages
Comment 1 Boris Mironov 2005-05-31 09:36:30 EDT

I've filed this problem with Oracle as TAR# 4405454.992

Best regards,
Comment 2 Boris Mironov 2005-05-31 12:04:00 EDT
*** Bug 159154 has been marked as a duplicate of this bug. ***
Comment 3 Boris Mironov 2005-05-31 12:04:48 EDT
*** Bug 159207 has been marked as a duplicate of this bug. ***
Comment 4 Boris Mironov 2005-05-31 12:06:19 EDT

Sorry guys it seems that 'Refresh' button repopulated my bug.

Comment 5 Boris Mironov 2005-06-05 21:27:16 EDT

Oracle forwarded me to Metalink document 262004.1 (Title: Configuring RHEL 3 
and Oracle 9iR2 with Hugetlb and Remap_file_pages). It works for Oracle 10g 
under RHEL 4.

This bug could be closed.

Comment 6 Suzanne Hillman 2005-06-07 15:44:02 EDT
Closing as per comment #5.

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