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тАО06-21-2007 05:01 PM
тАО06-21-2007 05:01 PM
Frequently Alpha DS20E get halted...
i m working with 4 node alpha server cluster environment, in that one node DS20E frequnetly goes halted state. what might be the cause? when i analysed after boot the server there is no errors found in error log and operator log.
is there any other analysis method to analyse the entrie server? can any one...
Alan
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тАО06-21-2007 05:16 PM
тАО06-21-2007 05:16 PM
Re: Frequently Alpha DS20E get halted...
if you get an unexpected halt on an OpenVMS Alpha system, it's best to set the console enviroment variable AUTO_ACTION to RESTART. This will cause the console to restart OpenVMS after an unexpected HALT and cause OpenVMS to write a crashdump and reboot.
This will save errlog entries and make the halt analyzeable.
Alternatively, you need to capture the console output from the halt, this at least gives some clue about the underlying problem.
Volker.
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тАО06-21-2007 05:25 PM
тАО06-21-2007 05:25 PM
Re: Frequently Alpha DS20E get halted...
You have not said which vms version you use.
Depending upon this version, different tools show the hardware errors
_ ana/error
- diagnose
- Compaq analyze (SEA)
- ana/err/elv translate
Check the memory with the command
$ sh memory
Do you see some bad pages ?
Check the Cpu and memory errors with a procedure such as
http://dcl.openvms.org/stories.php?story=06/03/21/8098045
Post your Vms version.
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тАО06-21-2007 05:30 PM
тАО06-21-2007 05:30 PM
Re: Frequently Alpha DS20E get halted...
if an OpenVMS system halts and you haven't set AUTO_ACTION RESTART, you need to go to the console and type >>> B to get the system up again.
In this case NO ERRLOG buffers are saved from the time preceeding the halt and absolutely no information is available from the halt situation.
Volker.
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тАО06-22-2007 04:21 AM
тАО06-22-2007 04:21 AM
Re: Frequently Alpha DS20E get halted...
Logical - CLUE$DOSD_DEVICE
sysgen - DUMPSTYLE
http://h71000.www7.hp.com/DOC/82FINAL/6549/6549pro_001.html#rb_tab1
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тАО06-22-2007 04:36 AM
тАО06-22-2007 04:36 AM
Re: Frequently Alpha DS20E get halted...
Another option would be to schedule downtime and run console diagnostics. I'd recommend using a PC and terminal emulator to be able to scroll back display.
Andy
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тАО06-22-2007 05:01 AM
тАО06-22-2007 05:01 AM
Re: Frequently Alpha DS20E get halted...
if it happens again, do a >>> exam pc
exam ps, exam r26. on the running system see
if you can find out where the processer was
with an anal/system and exam the pc address.
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тАО06-25-2007 12:16 AM
тАО06-25-2007 12:16 AM
Re: Frequently Alpha DS20E get halted...
If the bad memory resides within the system area, and the EXCEPTION code
gets hit by the bad memory, then no dump file or Error Log entry is written,
just plain HALT instruction.
Ask your local HP service to perform a full memory diagnose.
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тАО06-25-2007 01:30 AM
тАО06-25-2007 01:30 AM
Re: Frequently Alpha DS20E get halted...
After a few restarts we got a crash instead of a hang and then the ecc errors were reported.
Wim
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тАО06-25-2007 06:10 AM
тАО06-25-2007 06:10 AM