A fix is available
APAR status
Closed as program error.
Error description
A user EJB transaction running, getmains are being issued over and over by DFHRZXM+x'436' UK44073 ( PK79893) with REMARK(RZISRUEI) within the RZGENRAL CICS storage subpool. Eventually, RZGENRAL contained 141868K, CICS reached the EDSALIM and SOS message was issued : DFHSM0133 applid CICS is under stress (short on storage above 16MB). Earlier, a CIRR attached the user EJB transaction which was then delayed by a TCLASS limit. By the time the user transaction got to run, the CIRR task had been purged from the system and these factors lead to getmain loop.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All CICS Users. * **************************************************************** * PROBLEM DESCRIPTION: DFHSM0133 is issued and CICS is short * * on storage above the line when CICS * * runs EJB method. * **************************************************************** * RECOMMENDATION: * **************************************************************** A request to run an EJB method is received by CICS. The request receiver task creates a request stream and attaches the required request processor task. The newly attached task is unable to run due to exceeding the MAXACTIVE value for the TRANCLASS it is part of. The request receiver task is then purged by the operator. It destroys the request stream and abends AII3. A TRANCLASS slot then becomes free and the request processor task is able to run. It attempts to receive the buffer of data created by the request receiver task. Due to that task no longer being in the system the multi task coordination built in to the request streams domain fails to work correctly and the new task enters a loop acquiring storage to receive its initial data. This loop continually getmains RZISRUEI storage from the RZGENRAL subpool in ECDSA. The loop ends when CICS goes short on storage. The storage used is all in the RZGENRAL domain subpool so will not be freed and CICS has to be cancelled. Additional keywords: msgDFHSM0133
Problem conclusion
DFHIIRR has been changed to obtain an ENQ on a unique resource to indicate that it is still active and able to process a response from the attached request processor task. The use of the ENQ is passed via requeststreams to the newly attached task. The ENQ indicates to the request processor task that the request receiver task is still active and therefore its initial data is still available. It has also been changed to issue a corresponding DEQUEUE.
Temporary fix
********* * HIPER * ********* FIX AVAILABLE BY PTF ONLY
Comments
**** PE10/05/26 FIX IN ERROR. SEE APAR PM15099 FOR DESCRIPTION
APAR Information
APAR number
PM08662
Reported component name
CICS TS Z/OS V4
Reported component ID
5655S9700
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt
Submitted date
2010-02-26
Closed date
2010-03-19
Last modified date
2010-08-12
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK55402
Modules/Macros
DESIIRH DESIIRR DESRZST DFHIIRH DFHIIRHA DFHIIRHJ DFHIIRHM DFHIIRHT DFHIIRHV DFHIIRR DFHRZSO DFHRZSO1 DFHRZTA
Fix information
Fixed component name
CICS TS Z/OS V4
Fixed component ID
5655S9700
Applicable component levels
R600 PSY UK55402
UP10/03/24 P F003
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"4.1","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"4.1","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
12 August 2010