OA53037: XES LOCKING DATASPACES MOVE TO 64-BIT STORAGE.

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• XES Lock Dataspaces Constraint Relief.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Installations exploiting parallel sysplex using lock or      *
  * serialized list structures at z/OS V2R3 (HBB77B0).           *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * New function is required to relieve constraints affecting    *
  * the maximum number of connectors to lock or serialized list  *
  * structures from a single address space.                      *
  *                                                              *
  * SYSPLEXDS                                                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Install the applicable PTF on each system in the sysplex.    *
  * A rolling IPL is sufficient to activate the fix.             *
  ****************************************************************
  Connections to lock and serialized list structures have always
  used data spaces to contain control blocks related to
  processing of end-user requests.  z/OS V1R7 (HBB7720)
  introduced additional data spaces for lock structures to
  relieve constraints on the number of requests that could be in
  progress simultaneously.  It was known that this would
  constrain the number of connections to a structure from a
  single address space, which was an acceptable trade-off at
  that time.  However, that limitation has since become more of
  a concern, and new function is now required to relieve that
  constraint.
  

Problem conclusion

Temporary fix

Comments

• Eliminated the use of connector-related data spaces by moving
  applicable control blocks above the 2G bar.  This greatly
  reduces the number of PASN-AL slots consumed by serialized
  connectors, relieving the constraint on the number of
  connectors from a given address space.
  
  Documentation updates:
  
  PUBLICATIONS AFFECTED
  
  z/OS MVS Programming: Sysplex Services Reference
  SA38-0658
  
  Chapter "IXLCONN - Connect to a Coupling Facility Structure"
  
  Section "Restrictions"
  
  In the bullet beginning "The maximum number of connections to a
  structure in the coupling facility depends on:", delete the
  subordinate bullet "The address space limit of 128 PASN-AL
  entries for serialized structures per address space. (The lock
  structure and the serialized list structure are serialized
  structures.)"
  
  Section "Return and Reason Codes"
  
  Deleted the following reason codes:
  o IxlRsnCodeMaxConnectAS (xxxx0C15)
  o IxlRsnCodePASNExceeded (xxxx0C16)
  
  Deprecated the following reason code:
  o IxlRsnCodeDSNotCreated (xxxx0C12)
  
  Defined the following new reason code:
  o IxlRsnCodeConnStgNotAvail (xxxx0C12, replaces
    IxlRsnCodeDSNotCreated)
  
  PUBLICATIONS AFFECTED
  
  z/OS MVS System Messages, Vol 10 (IXC-IZP)
  SA38-0677
  
  IXL013I requesttype REQUEST FOR STRUCTURE structure-name
          FAILED
  
  Deleted the following errortype inserts:
  
  THE MAXIMUM NUMBER OF CONNECTORS IN THIS ADDRESS SPACE EXIST
  
  FAILURE ADDING ENTRY TO PASN ACCESS LIST
  
  FAILURE CREATING DATA SPACE
  
  Added the following new errortype insert:
  
  UNABLE TO ASSIGN CONNECTOR STORAGE
  
  
  PUBLICATIONS AFFECTED
  
  z/OS MVS Dump Output Messages
  SA23-1378
  
   IXL0016I Probable queue error detected, queue ID: X'iiiiiiii'
  |         VSA and ALET: nnnnnnnn_nnnnnnnn xxxxxxxx
  
    Explanation: IPCS detected a possible problem with an XES
    queue.
  
    In the message text:
  
    iiiiiiii
  |   Identifies the failing queue.
  
    nnnnnnnn_nnnnnnnn
  |   Virtual storage address of the failing queue header.
  
    xxxxxxxx
  |   ALET associated with the failing queue.
  
    System action:  The system continues processing the IPCS
    XESDATA subcommand.
  
    Source:  Cross-system extended services (XES).
  
  
  PUBLICATIONS AFFECTED
  
  z/OS MVS System Codes
  SA38-0665
  
  In the section describing ABEND026, update the "Operator
  Response" section as follows:
  
  | Operator response: Any reason codes not explicitly described
  | above, including but not limited to those in the following
  | list, represent errors internal to the XES component. Search
    problem reporting databases for a fix for the problem. If no
    fix exists, contact the IBM Support Center.
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UA94775

Modules/Macros

• IXLS1REC IXLX1AEI IXLF1VGM IXLF1VGL IXLF1VGT IXLF1VGR IXLF1VGH
  IXLS1QV  IXLF1VGA IXLF1SI2 IXCF1VCC IXLR1DIA IXLR1LKR IXLF1TX2
  IXLS1POB IXLX1CNF IXLM1DMP IXLR1NLA IXLR1SUS IXLR2LSD IXLR2LSF
  IXLX1CNP IXLF1VWR IXLD1INT IXLS1POS IXLF1TF4 IXLF1TF5 IXLF1TF2
  IXLF1TF3 IXLM1RMT IXLF1TF6 IXLF1VVT IXLI1SIN IXLM2MR  IXLF1TF1
  IXLS1TMR IXLF1SIG IXLX1ASR IXLR2CHS IXLX1ASO IXLR2QUE IXLF1TFT
  IXLS1QUE IXLM1MS2 IXLD1ALC IXLF1RES IXLD1FRE IXLR1LPT IXLF1DEL
  IXLR1NGM IXLR1RRS IXLR1RCK IXLR1SRB IXLR1QRY IXLR1CMP IXLM2XSR
  IXLR1RRE IXLR1RCS IXLF1VLM IXLF1VLL IXLM2DRL IXLM2XRQ IXLF1VLH
  IXLF1VLC IXLR2MPR IXLR1LNT IXLR1LNX IXLR1GLC IXLR1NEI IXLR2MAN
  IXLR1GLB IXLM1E64 IXLR1GLU IXLE1RDV IXLC2LBF IXLR1RSU IXLR1RSM
  IXLE1RTY IXLR1ADS IXLF1LCR IXLM1EDD IXCI2PH1 IXLF1TRC IXLM1DDD
  IXLF1ACC IXLC2RCD IXLF1ARQ IXLR1CAC IXLM2SR  IXLR1LSI IXLD1EVR
  IXLR1QVG IXLQ1EV3 IXLR1ESC IXLC1DCN IXLF1TOR IXLF1VAW IXLM2DR
  IXLR1GRN IXLR1QVS IXLD1GET IXLR1LST IXLR1GRT IXLC1BLD IXLI1LPX
  IXLR1PAL IXLR1LCR IXLQ1EVR IXLR1LCK IXLS1FRE IXLM2LRS IXLD1RET
  IXLS1RNP IXLF1VMA IXLR1RDV IXLS1SSD IXLD2LOC IXLF1VME IXLR1CRR
  IXLF1VMH IXLM2DSP IXLF1VML IXLF1VDR IXLF1VDS IXLF1VCX IXLR1FCP
  IXLF1VMR IXLE1MEV IXLR1SIG IXLF1VMT IXLM2TAM IXLF1VDE IXLYCON
  IXLS1SSP IXLR2PLA IXLF1VCL IXLF1VCN IXLM1TMR IXLF1VCR IXLR1RES
  IXLS1HTP IXLS1FL  IXLLOCK  IXLM2CR  IXLF1MON IXLM1REC IXLF1FAT
  IXLR1LRR IXLF1FAX IXLR1LRS IXLF1VST IXLR1CEI IXLF1VSM IXLF1VSO
  IXLF1VSL IXLF1VSG IXLR1ALR IXLR1BUN IXLR1DES IXLR1ALT IXLF1NAM
  IXLF1VSU IXLF1VSW IXLF1CON IXLC3DSN IXLR2SSF IXLF1VTL IXLR2SSD
  IXLR1QV  IXLR1RT  IXLF1STK IXLR1SYN IXLM2BRK IXLC1CON IXLM1SAD
  IXLR2QV  IXLCONN  IXLF1VRB IXLF1VRC IXLC3SCN IXLX1RES IXLM1D64
  IXLF1VRN IXLM1TBL IXLF1VRL IXLD1QCR IXLR1UNL IXLC1EOT IXLC1CO1
  IXLX1EEI IXLF1LKM IXLF1VSB IXLF1VRW IXLX1EER IXLM1TB2 IXLM1MST
  IXLHA11  IXLHA31
  

Fix information

• Fixed component name

  CROSS SYS.EXT.S

• Fixed component ID

  5752SCIXL

Applicable component levels

• R7B0 PSY UA94775

     UP17/12/27 P F712  

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.