We are not able to isolate the issue and was wondering if anyone on the list 
could give some guidance.

Our environment:

Red Hat running ARS 7.5 patch 8 (8 in server group)
Oracle 10g running ITSM 7.6

Problem:

SRM Events causing all prod servers to crash at once.

We see this in the error log:

Tue Oct 22 10:14:10 2013  390620 : AR System server terminated when a 
signal/exception was received by the server (ARNOTE 20)
Tue Oct 22 10:14:10 2013     11
   Timestamp: 1382451250.0791
   Thread Id: 1098680640
   Version: 7.5.00 Patch 008 201112090209 Dec  9 2011 02:44:08
   ServerName: <servername goes here>
   Database: SQL -- Oracle
   Hardware: x86_64
   OS: Linux 2.6.18-308.24.1.el5
   RPC Id: 442
   RPC Call: 3 (CE)
   RPC Queue: 390620
   Client: User Remedy Application Service from Unidentified Client (protocol 
14) at IP address <Ip address goes here>
   Form: WOI:WorkOrderInterface_Create
   Logging On:

Tue Oct 22 10:14:10 2013  390620 : AR System server terminated when a 
signal/exception was received by the server (ARNOTE 20)
Tue Oct 22 10:14:10 2013     Stacks:
0: 0x7e06cd ./arserverd [0x7e06cd]
1: 0x7e0de6 ./arserverd(SignalTrapProc+0x15e) [0x7e0de6]
2: 0x2b81db470be0 /lib64/libpthread.so.0 [0x2b81db470be0]
3: 0x75381a ./arserverd [0x75381a]
4: 0x751a90 ./arserverd [0x751a90]
5: 0x5f84c8 ./arserverd [0x5f84c8]
6: 0x5411ce ./arserverd [0x5411ce]
7: 0x540b8e ./arserverd(arcreateentry_14_svc+0xb0) [0x540b8e]
8: 0x466a41 ./arserverd [0x466a41]
9: 0x7eb0a6 ./arserverd(WorkerThread+0x756) [0x7eb0a6]
10: 0x9e1fb0 ./arserverd(RestartableThreadMain+0x50) [0x9e1fb0]
11: 0x9e1f3b ./arserverd(UnixThreadStartRoutine+0xce) [0x9e1f3b]
12: 0x2b81db46877d /lib64/libpthread.so.0 [0x2b81db46877d]
13: 0x2b81ddf523ed /lib64/libc.so.6(clone+0x6d) [0x2b81ddf523ed]

We opened a ticket with BMC and they said that the "CAI Events" plugin was not 
thread safe.  To resolve this we changed the following parameter:

Plugin-Filter-API-Threads: 2 2

To just uncommenting it (and accepting the default value):

#Plugin-Filter-API-Threads: 1 1

Could it be possible that the other plugins are not thread safe and that they 
could be contributing to the crash?  We still have the following settings in 
the ar.conf file:

Plugin-ARDBC-Threads: 2 2
Plugin-ARDBC-Threads: 2 2

Anyone run into a similar issue before and how did you remediate?  
Unfortunately upgrading to 7.6 or beyond is not possible at the moment for us 
... to many customizations/loss of user tool, etc.

Thanks,

Sean



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