Server hangs

[Paola Garza]

I have 2 L1000 servers running the same ( Oracle ERP Application), both have the same disks,processor and memory. Each time that the DBA??s have to install a path to them(from Oracle) the 2 servers hang and i just can access to them by the web console and just to the GSP, because they don??t respond by pinging them. I restart them by a TC to create a dump that could tell me what happened, but each time that i??ve sent that dump to the support people (from HP, M??xico) they have told me that the dump is corrupted. They already have changed to them the processor and a lan card. I really don??t know what to do because i??ve been having this problems for 6 months.

Does anyone know what could be happening with my servers ?

[D. Jackson_1]

You may have a look at your patch levels, you should look into making them more current.

HTH

[RAC_1]

First update patch level
try tuning the kernel parameters required for oracle

then see what happens.

[Martin Johnson]

Check with Oracle for their latest patches and check with HP for their latest patches. Check stm for any hardware errors. Check the syslog and sybase logs for any errors.

HTH
Marty

[Hai Nguyen_1]

Paola,

Did dmesg or /var/adm/syslog/syslog.log give you no clues? I got a system hang before which was due to hardware defect.

You may want to extend the size of crash filesystem in order to be able to catch the whole crash dump.

Hai

[Paola Garza]

The space for the crash is fine... in fact when the server is restarting it says that it is 100% completed...

A support engineer has already check the path level that i have...

[harry d brown jr]

When you say the server's hang on an Oracle PATCH install, are you saying the PATCHes are coming from Oracle or from HP??

What OS level are you running, and what version of Oracle??

Are these machines in a cluster?

Is there intrusion detection software installed and running?

What does Oracle say about the problem??

When you are able to login from the console, what processes are running??

live free or die
harry

[Paola Garza]

OS => HP-UX 11.0
ORACLE => ERP 11.5.4

I don??t have intrusion detection installed and I cannot tell you what kind of processes are running ??cause i just haven??t seen, but the thing that i can tell you is that when the dba??s install a patch the application is not running...

These machines are not a cluster... both run the same application and they are controlled by a Content Switch

[harry d brown jr]

Can you supply some PATCH names so that we can look them up?

live free or die
harry

[Paola Garza]

the dba??s says the last patches that have been installed are the 2243908 (size => 8.1 Mb) and the 1890682 (size => 121 K). When they were installing them the servers hang.

[harry d brown jr]

THose MUST be Oracle PATCHes, and this question should be placed with Oracle.

HP PATCHes start with things like PHKL_####, PHSS_####, etc.

live free or die
harry

[Exploitation-Québec]

Can you ask your DBA at what point of the installation of the patch the server hang? During the copy, database or generate driver?
Have you take a look at the log of the installation? Any messages in dmesg, shutdownlog or syslog?

[Paola Garza]

the dba says that it had happen in several points of the installation... but most of the times it had happen in the database part... when they have to connect to the database...

the syslog send a message of system panic...

[Exploitation-Québec]

Maybe you have a bad patch on your system or you miss one or more patches. You could try to apply the latest HP patch bundle on your system. Have you check with HP for the panic message? Could be hardware to. What is the version of the database?