AOS in dead state frequently

(0) Share

Report

Posted on by SomuAx2012

1,235

I have 6 Aos's. 5 are part of one cluster and other one which is a batch server is in separate cluster. For the past few months, we been noticing that 2 or 3 random Aos's out of 6 are going to dead state in online users form (Including batch AOS server), though the services are in started state. The users who are already on the dead AOS's are still able to perform their tasks for some time. But eventually the services will stop and kick everyone out. This is happening more often recently. Did not find any information in application and system event logs for any of the AOS servers or database servers.

Kernel version: 6.0.11.8.5628

Application version: 6.0.947.280

Has anyone else faced the similar problem? Please help

*This post is locked for comments

I have the same question (0)

All responses (11)

Answers (1)

André Arnaud de Cal... 300,915 Super User 2025 Season 2 on at

Like (0)

Report

Hi,

Can you find any related events in the Windows event viewer on the servers?

Do you know something about memory consumption on those servers? Did you.monitor the used hardware resources already?

Was this reply helpful? Yes No
SomuAx2012 1,235 on at

Like (0)

Report

Thanks for the reply.

I have monitored the resources on all the servers and they are looking good. All of them have 16GB memory and 2 core processors. Memory consumption as of now is about 30% on all the servers.

No related events were found in the windows application or system log except below 2 which have been living with for a while.

Object Server 01: The database reported (session 1 (-AOS-)): [Microsoft][SQL Server Native Client 10.0][SQL Server]Warning: Null value is eliminated by an

aggregate or other SET operation.. The SQL statement was: "UPDATE SYSCACHEFLUSH SET CLEARDATA=?,RECVERSION=?,MODIFIEDDATETIME=? WHERE ((RECID=?) AND (RECVERSION=?))"

Object Server 01: Dialog issued for client-less session 1: Cannot edit a record in System cache flush (SysCacheFlush).

The SQL database has issued an error.

Was this reply helpful? Yes No
SomuAx2012 1,235 on at

Like (0)

Report

I have 2 other AOS's going down. This time the services are stopped completely. They still appear as dead in online users form.

Windows application Event log reads the following

Object Server 01: Unexpected situation

More Information: Session Allocation Failed: Session is already allocated.

Was this reply helpful? Yes No
Community Member on at

Like (0)

Report

Please verify why you have Kernel version and Application version difference

it is recommended to keep both the version simmilar

Please update us with your findings

Was this reply helpful? Yes No
André Arnaud de Cal... 300,915 Super User 2025 Season 2 on at

Like (0)

Report

Hi Nitesh,

Microsoft provides kernel updates separately. This is causing the difference in Kernel and Application version. This is normal and it is in this case not possible to have the versions similar.

@SomuAx2012: Make sure the client executable version and AOS binaries do have the same version number. Do all AOS and clients have been updated with the same kernel version?

Was this reply helpful? Yes No
SomuAx2012 1,235 on at

Like (0)

Report

Hello Umesh,

As I mentioned earlier. This is very random. Happening on any of the 6 servers.

Was this reply helpful? Yes No
SomuAx2012 1,235 on at

Like (0)

Report

Hi Andre,

All the AOS's have the same kernel and application versions.

We use citrix for users to access the application. I see the same versions even if I login using citrix. Can you please let me know if I am missing anything here..

Was this reply helpful? Yes No
rudra 6,534 on at

Like (0)

Report

Hi Somu,

Can you try installing the latest kernel hotfix from the below link,

blogs.msdn.com/.../overview-of-ax-build-numbers.aspx

Also did you come across Denis blog sinedax.blogspot.in/.../ax-2012-aos-crash-kernel-hotfix_5.html

Was this reply helpful? Yes No