GWRD Hangs

[Former Member]

On Friday, we had our 46C production system completely lock up. We noticed the GWRD was at 19% CPU and all dialog processes were in use. In our research we found it was a Memory Allocation error.

C2M1212 Diagnostic

From module . . . . . . . . : QC2HYPSP

From procedure . . . . . . : CTS_free

Statement . . . . . . . . . : 246

To module . . . . . . . . . : GWXXRD

To procedure . . . . . . . : GwFreeMemory__FZPvUiUc

Statement . . . . . . . . . : 6

Message . . . . : The pointer parameter passed to free or realloc is not

valid.

Has anyone else seen this issue before?

thanks

David Shore

[Former Member]

Question about system parameters regarding the GWRD issue.

SAP has suggested to change parameters:

DVEBMGS00

rdisp/appc_ca_blk_no 250

rdisp/wp_ca_blk_no 300

They suggest changing rdisp/appc_ca_blk_no 250 to 2000. We have read some notes that warn about the Shared memory needing to stay below 16M. Note 79478.

Can anyone share with me what these parameters are set at on your systems? We feel we can safely change the value from 250 to 500.

We are running 46C with kernel 2155, V5R3 on 570 4-way.

[Former Member]

Hi David,

you should definetely do that what is suggested !!!

All notes on 16MB limits are desinged up to 4.5B - as of 4.6A you can "increase what you want" (more or less).

I setup all my clients with the following values:

rdisp/appc_ca_blk_no = 2000

rdisp/wp_ca_blk_no = 2000

Regards

Volker Gueldenpfennig, consolut.gmbh

http://www.consolut.de - http://www.4soi.de - http://www.easymarketplace.de

[Former Member]

Hi David,

unfortunately this happens sproadic sometimes - you should open an SAP message, so that they can work on that. This will be not an easy task as it is so sporadic and rarely

As a short temporary workaround you could kill the GWRD process and the dispatcher will create a new one. Unfortunately you lose all open connections to the GWRD => some users will crash their current transactions - but still perhaps better than restarting SAP complete.

Regards

Volker Gueldenpfennig, consolut.gmbh

http://www.consolut.de - http://www.4soi.de - http://www.easymarketplace.de