topic UCX Memory Exhausted in Operating System - OpenVMS

UCX Memory Exhausted

Sk Noorul Hassan — Wed, 23 Feb 2005 12:18:52 GMT

There are lots of VAX servers in WAN links with Open VMS 7.1 and UCX 4.2 ECO 1. Application is all about colleting data through outstations from Remote Areas and pass them to VAX servers via UCX link.

We face the SYSTEM CRASH problems often and the error is "UCX Memory Exhausted".

Please help in solving the same. Do we need to Upgrade UCX version from UCX 4.2 to TCP/Ip 5.1 or above ? Please suggest

Re: UCX Memory Exhausted

Volker Halle — Wed, 23 Feb 2005 13:48:47 GMT

Hi,

if you have a system crash on OpenVMS VAX V7.1 and there is a valid SYSDUMP.DMP file, OpenVMS will create a CLUE file during boot after the crash: CLUE$OUTPUT:CLUE$LAST_node.LIS

This small text file will include basic information about the system crash, please consider to attach this file in your next reply.

Please explain and show the exact error message text and operation returning 'UCX Memory exhausted'.

Please note that the highest version of TCPIP supported on OpenVMS VAX V7.1 is TCPIP V5.0A ECO 3. The latest ECO available for UCX V4.2 is ECO 5.

Volker.

Re: UCX Memory Exhausted

Jeff Chisholm — Thu, 24 Feb 2005 14:29:20 GMT

Post a copy of your Clue file here, also the results of $ UCX SHOW VERSION

We can probably get you an answer in a few minutes, since your versions are quite old. I would expect to find the crash well known and documented.

Re: UCX Memory Exhausted

Sk Noorul Hassan — Tue, 01 Mar 2005 10:15:26 GMT

Hi,
pls find the attachment of clue file, have look into it and suggest the solution

Re: UCX Memory Exhausted

Volker Halle — Tue, 01 Mar 2005 11:40:17 GMT

Hi,

this is the SAME HALT restart crash as posted in thread:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=821017

Where do you see the error message 'UCX Memory Exhausted' ?

Volker.

Re: UCX Memory Exhausted

Sk Noorul Hassan — Mon, 18 Apr 2005 07:25:22 GMT

Hi Volker,

Is source code required to analyse sysdump.dmp file of a VAx system by any other third party ?

UCX memory exhuasted problem still exists. Pls suggest

Re: UCX Memory Exhausted

Volker Halle — Mon, 18 Apr 2005 07:37:10 GMT

Sunil,

some analysis can be done on a VAX system dump without source code (easier than on Alpha).

You have never explained, either in this thread nor in the other one, where you see the 'UCX memory exhausted' message.

As explained in the other thread, the HALT crash happens in a privileged program and this needs to be examined at instruction level to try to find out the instruction stream leading to the HALT. Please see thread

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=821017

for a request for more information.

Volker.