i don't know what happned?rx 6600 server's power supply crushed

[rustam_2]

Hi All
HP rx 6600 server's power supply crushed and server was down. I don't know why redundant power supply didnt work.
We changed and now power supply works well. But after starting OS HP-UX 11.3i i saw some troubles in OS. There runs Oracle DB. So login and what to start some services such as lsnrctl and etc. But still can't find directory of Oracle HOME and others. What could happened with those directories? Did they delete during crush? when i typed
cd: /u01/app/oracle/product/10.2.0/db_1:
i got error message: No such file or directory
why and what happened, who could give advice?
Regards,
Rustam.

[Johnson Punniyalingam · Accepted solution]

>>cd: /u01/app/oracle/product/10.2.0/db_1:
i got error message: No such file or directory
why and what happened, who could give advice?<<<

Can you check does mount point mounted

bdf -> output

or

bdf /u01/app/oracle/product/10.2.0


Check below logs & commands, to identify any disk failure

dmesg
/var/adm/syslog/OLD.syslog.log
/var/adm/syslog/syslog.log
/var/opt/resmon/logs
vgdisplay -v |more -> look for any "Psyical volume problem"

Thanks,
Johnson

[johnsonpk]

Rustam,

Seems some of the filesystems are not mounted ,

Check the mounted filessytem with bdf and compare it with /etc/fstab

check whether all vgs are in active state (vgdisplay)

analyze /etc/rc.log for startup messages

[Kapil Jha]

I hope its not cluster, i suppose you should check if ur file system is mounted, and if some file systems are missing do a full fsck.

Except missing file system or file system curruption there does not seesm to be any cause.

BR,
Kapil+

[madhuchakkaravarthy]

Hi

you might be having redundant power supply,but during some time this may happen ,, most commonly it might be having two UPS power.
when one source get fails,redundant gets on ,but sometimes it cant bear the power and redundant also get fails ..

so check with the logs as said by Johnson.

login to console and check with ps so that you can have clear idea abt that.

nothing to fear abt it,,,

check with bdf and /etc/fstab.

may be that file system may not be mounted.

note:::: perform a periodic power testing activity ( may be in every quarter)

log a call with backend team and check the status of the system...

[rustam_2]

Thanks a lot for all of you. I checked all logs and found out that problem was with disk arrays of EVA, server couldnt mount them during starting up(I checked bdf and then compared /etc/fstab)
Now server works normal but i think i have to read about file system and mounting of them. Coz i didnt\dont know anything about file system of HP-UX and /etc/fstab and what to add there.

Regards,
Rustam

[Johnson Punniyalingam]

>>Now server works normal but i think i have to read about file system and mounting of them. Coz i didnt\dont know anything about file system of HP-UX and /etc/fstab and what to add there.<<<<

man pages are your friendly advisor's :)

you can start with them,

man bdf
man mount
man fstab

[Kapil Jha]

Its good to read about the know-how.
Well just in case....if u have cluster things would be entirely different.
else just same entries as the last in /etc/fstab
except the mount point and block device would change.
Anyways I suppose you would be having entries already as this was just because of EVA problem.

BR,
Kapil+

[rustam_2]

Johnson Punniyalingam, thanks again.

Kapil Jha, yeah, i think, it wasn't due of EVA problem. These days i'm reading about file system, and it's really different then MS. I have a lot question about file systems but i hope\think that man pages + google could be good teachers for me :)