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IEA705I 878-10 in CICS - storage shortage below 16MB line when using IAM

Question & Answer


Question

Why would I receive message IEA705I reporting an 878-10 abend in my CICS Transaction Server for z/OS (CICS TS) region when using vendor product IAM from Innovation Data Processing ?

My CICS region went down with the following messages:

IEF170I cics jobname DFHSR0606 cics applid Abend (code 878/AKEX) has been detected.
IEF170I cics jobname DFHME0116 cics applid
(Module:DFHMEME) CICS symptom string for message DFHSR0606 is
PIDS/5655Y0400 LVLS/690 MS/DFHSR0606 RIDS/DFHSRP PTFS/HCI6900
AB/S0878 AB/UAKEX

IEA705I ERROR DURING GETMAIN SYS CODE = 878-10 cics jobname

Answer

Rewiewing the dump with IPCS command verbx vsmdata 'nog summ', it was possible to see thru the local storage data summary that the problem is below the 16MB line:

     L O C A L   S T O R A G E   D A T A   S U M M A R Y             
                                                                         
                                                                         
       **LOCAL STORAGE MAP                                                 
    ___________________________                                          
   |                           |80000000  <- Top of Ext. Private         
   | Extended                  |                                         
   | LSQA/SWA/229/230          |80000000  <- Max Ext. User Region Address
   |___________________________|7D936000  <- ELSQA Bottom                
   |                           |                                         
   | (Free Extended Storage)   |                                         
   |___________________________|5F6E4000  <- Ext. User Region Top        
   |                           |                                         
   | Extended User Region      |                                         
   |___________________________|1AA00000  <- Ext. User Region Start      
   :                           :                                         
   : Extended Global Storage   :                                         
   =======================================<- 16M Line                    
   : Global Storage            :                                         
   :___________________________:  A00000  <- Top of Private              
   |                           |                                         
   | LSQA/SWA/229/230          |  A00000  <- Max User Region Address     
   |___________________________|  8E1000  <- User Region Top**           
   |                           |                                         
   |                           |                                         
   |                           |                                         
   |                           |                                         
   | User Region               |                                         
   |___________________________|    6000  <- User Region Start           
   : System Storage            :                                         
   :___________________________:       0                                 
                                                                         
 **   User Region Top has hit bottom of LSQA**      

      
          

The subpool with significant usage below the line is 230 key 5:

LOCAL SUBPOOL USAGE SUMMARY

  TCB/OWNER   SP#   KEY      BELOW    ABOVE    TOTAL
  ---------   ---   ---      -----    -----    -----
    9FAC60    230    5       41000    CD000   10E000 


Looking at the Data for subpool 230, key 5 for the TCB that reports the storage consumption, it is possible to see lots of areas with size X'1000'.

Examples of DQEs (FQEs sizes vary):

 DQE:  Addr 00901000 Size     1000                                                 
                                   FQE: Addr 00901000 Size       10                
 
 DQE:  Addr 00939000 Size     1000                                                 
                                   FQE: Addr 00939000 Size      1C0                


These DQEs have areas with eyecathers CVIOW...INIT and IOBE.

They refer to areas of CVAF Component of DFSMS. The common volume-table-of-contents access facility (CVAF) provides system and user access to VTOCs.

Checking the system trace with IPCS command SYSTRACE TIME(LOCAL) there are many entries showing that CVAF macros were issued:

 0000 008A 009FAC60  SVC     8B 00000000_1A1DD042  80234C88 5D461389 008C4870  Cvaf                        
 0000 008A 009FAC60  SVC     8B 00000000_1A1DC636  00000000 00000000 008C4870  Cvaf                        

In CVPL (CVAF Parameter List) the bit IOAREA=KEEP is on.

The command IPCS WHERE for the above addresses shows that they pertain to Innovation Data Processing vendor IAM product:

ASID(X'008A') 1A1DD042. IAM0001I+1002 IN EXTENDED CSA

ASID(X'008A') 1A1DC636. IAM0001I+05F6 IN EXTENDED CSA

The vendor provided fixes for IAM 9.2:

ZAP-ID# : P-92.0101 for abend S878

ZAP-ID# : P-92.0091 for abend S378

Contact Innovation Data Processing if you need additional assistance.

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Platform":[{"code":"PF035","label":"z\/OS"}],"Component":"Storage","Version":"","Line of Business":{"code":"LOB17","label":"Mainframe TPS"}}]

Product Synonym

CICS/TS CICSTS CICS TS CICS Transaction Server

Document Information

Modified date:
29 June 2018

UID

dwa1386043