Not able to login to the system

[Unable to login to the]

Hi All,
We have a HP Server with OS HP-UX 11.11
Server Model 9000/785/J6700
This server frequently hangs and nobody is able to login to the server.
however ping to the server works fine.
when checked the event.log found the below message. Is anyone have any idea why this is happening and how to prevent this, this is not the first time and we need to reboot the system everytime.
--------------Message-------------------------
Event Time..........: Mon Dec 10 11:28:25 2007
Severity............: CRITICAL
Monitor.............: dm_memory
Event #.............: 1300
System..............: varuna

Summary:
Memory Event Type : A memory page has been deallocated and entered into
the Page Deallocation Table (PDT).


Description of Error:

The Page Deallocation Table (PDT) is 100% full.

PDT Entries Used: 50
PDT Entries Free: 0
PDT Total Size: 50

An excessive number of memory pages have been deallocated due to
excessive correctable single bit errors being detected. Although the
errors are being corrected, this condition indicates a potential
problem.

Probable Cause / Recommended Action:

The Page Deallocation Table (PDT) is in danger of overflowing, it is
strongly advisable to closely monitor the situation. Although the errors
are being corrected, this condition indicates a potential problem. Contact
your HP support representative to check the memory boards.

Additional Event Data:
System IP Address...: 10.125.64.21
Event Id............: 0x475cd58100000000
Monitor Version.....: B.01.00
Event Class.........: I/O
Client Configuration File...........:
/var/stm/config/tools/monitor/default_dm_memory.clcfg
Client Configuration File Version...: A.01.00
Qualification criteria met.
Value received met: value(100) >= 80
Associated OS error log entry id(s):
None
Additional System Data:
System Model Number.............: 9000/785
EMS Version.....................: A.03.20
STM Version.....................: A.34.00
Latest information on this event:
http://docs.hp.com/hpux/content/hardware/ems/dm_memory.htm#1300
----------------------------------------------

[Anshumali]

Looks like your DIMMS are having an issue.
Log a case with local HP Response Center for a check.

[Dennis Handly]

>We have a HP Server with OS HP-UX 11.11
Server Model 9000/785/J6700

(This looks like a workstation.)

>This server frequently hangs and nobody is able to login to the server. however ping to the server works fine.

If you can't login, the server is down. You need to take a memory dump to analyze the cause. It may or my not be the same issue of your single bit errors?

[Torsten. · Accepted solution]

Your diagnostics are from Sept 2002 - you should upgrade!

http://h20293.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=B6191AAE

Is the patch level at the same old status?

Your system has a problem with the memory - review it with stm or call the support. At least a DIMM needs probably to be exchanged.

[Unable to login to the]

Thankks for reply,

We changed the memory of the server and now everything looks normal.

[Unable to login to the]

thanks and closing the thread.