Solved

System Administrator applied linux 5 patch and kernel upgrade now can't see Oracle ASM diskgroups

Posted on 2014-07-21
10
423 Views
Last Modified: 2014-08-15
After the System Administrator upgrade the kernel and applied linux patch I am unable to restart all the oracle software. I noticed that the raw ASM diskgroups are no longer visible when i do a fdisk -l what step am I missing or the SA in order to make the diskgroups visible

The database is 11.2.0.3 RAC with 3 nodes
0
Comment
Question by:sikyala
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 8
10 Comments
 
LVL 47

Assisted Solution

by:David
David earned 250 total points
ID: 40209498
Well, a good start is to look at release notes and see what changed. For all you know this could have been caused by a system reboot on the same kernel.     The important thing to remember is device names and WWNs are NOT locked in stone, especially with multipathing.   Add a new disk and what was /dev/sdd before could now be /dev/sde.

There are things a sysadmin can do for persistence of device names.  I'd look at that first and see if problem is due to that happening.

Updating a kernel could remove that persistence and any soft links as well.
0
 
LVL 29

Accepted Solution

by:
MikeOM_DBA earned 250 total points
ID: 40209887
1) Do what dlethe suggests
2) Re-link Oracle:  
$ORACLE_HOME/bin/relink all

Open in new window

3) Check the linkage logs.
0
 

Author Comment

by:sikyala
ID: 40232574
the SA reverted back to an earlier version of the OS kernel by changing a number in a file to 1. Now I am able to start asm and the database. However, having the later version of the kernel is needed for hardening purposes. I found a version of the kernel in oracle for asmlib. should I upgrade the asmlib kernel?
0
Visualize your virtual and backup environments

Create well-organized and polished visualizations of your virtual and backup environments when planning VMware vSphere, Microsoft Hyper-V or Veeam deployments. It helps you to gain better visibility and valuable business insights.

 

Author Comment

by:sikyala
ID: 40232624
the version was 2.6.18-274 and it was upgraded to 2.6.18-371
0
 

Author Comment

by:sikyala
ID: 40232741
2.6.18-274.7.1.e15 is what it is currently running
0
 

Author Comment

by:sikyala
ID: 40232748
2.6.18-371.9.1.e15 is what the kernel was upgraded to
0
 

Author Comment

by:sikyala
ID: 40234357
The SA changed the default value to 1 so that the server would boot with the 2.6.18-274.7.1.e15 kernel
0
 

Author Comment

by:sikyala
ID: 40239122
after I relink node 2 and 3 now asm fail initializing when i type  oracleasm start I have no problem on node 1
0
 

Author Comment

by:sikyala
ID: 40247002
I forgot to reboot the server after I edited the /etc/grub.conf file
0
 

Author Closing Comment

by:sikyala
ID: 40263205
i figured most on my own
0

Featured Post

Why Off-Site Backups Are The Only Way To Go

You are probably backing up your data—but how and where? Ransomware is on the rise and there are variants that specifically target backups. Read on to discover why off-site is the way to go.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Linux users are sometimes dumbfounded by the severe lack of documentation on a topic. Sometimes, the documentation is copious, but other times, you end up with some obscure "it varies depending on your distribution" over and over when searching for …
Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
This video shows how to recover a database from a user managed backup
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question