PI05093: DXR175E IDB3001 IRLM IS UNABLE TO OBTAIN STORAGE - PVT IS ISSUED 13/11/04 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• IRLM incorrectly issues DXR175E  IRLM IS UNABLE TO OBTAIN
  STORAGE - PVT  because Below The Bar storage usage becomes
  higher than threshold value.
  Customer may encounter message DSNT501I 00C90092
  resource unavailable due to lock rejections happening.
  
  Addtional sympton:
  IRLM abend0c1 in DXRRL400+x'818' when it tries to execute
  Extended Immediate type nstruction like CFI under old processor
  like Z890.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All IRLM230 (HIR2230) users.                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: After installing UK96959/PM89139, IRLM  *
  *                      may:                                    *
  *                                                              *
  *                      1. incorrectly issue DXR175E message    *
  *                       indicating that below-the-bar private  *
  *                       storage has reached threshold value.   *
  *                                                              *
  *                      2. encounter S0C1 abend in various      *
  *                       offset in DXRRL400.                    *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
  ****************************************************************
  1. Below-the-bar private storage accounting:
  
     IRLM keeps track of all below-the-bar private storage in
  an accounting field.  When this below-the-bar accounting field
  reaches or exceeds the threshold value, message DXR175E will
  be issued on the console.
  
     When a new segment of below-the-bar private storage is
  obtained, its value is added into the accounting field.  When
  a free segment is compressed (FREEMAINed), its value is
  subtracted from the accounting field.
  
     For every lock control block (RHB/RLB/RHBL), there is an
  index block (RLBI), below-the-bar private storage, associated
  with above-the-bar RLB addresses.  Whenever the lock control
  block (RHB/RLB/RHBL) gets compressed, so does its associated
  RLBI block.  There is no existing logic to subtract the RLBI
  length after it gets compressed.
  
  2. New Extended-immediate facility instructions:
  
     In PM89139/UK96959, IRLM used several new immediate assembler
  instructions.  These new instructions are supported by the
  extended-immediate facility which exists in machine z9-109 and
  later.  For customer that runs on older machine (z890), these
  new immediate instructions cause abend S0C1 in IRLM storage
  manager code.
  

Problem conclusion

• GEN:
  KEYWORDS:
  
  *** END IMS KEYWORDS ***
  1. Below-the-bar private storage accounting:
     Code is added to subtract the length of the RLBI block from
  the accounting field whenever it gets compressed.
  
  2. S0C1 abend in storage manager:
     All new immediate instructions are replaced by equivalent
  assembler instructions.
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

• ž**** PE14/06/18 FIX IN ERROR. SEE APAR PI20061  FOR DESCRIPTION
  

APAR Information

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

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

  UI13510

Modules/Macros

• DXRRL0B0 DXRRL010 DXRRL040 DXRRL090 DXRRL1E0 DXRRL1H9 DXRRL1S0
  DXRRL1S1 DXRRL120 DXRRL150 DXRRL160 DXRRL190 DXRRL2B0 DXRRL2R1
  DXRRL2R2 DXRRL2R3 DXRRL2R4 DXRRL210 DXRRL211 DXRRL24B DXRRL24F
  DXRRL246 DXRRL247 DXRRL400 DXRRL401
  

Fix information

• Fixed component name

  IRLM V2

• Fixed component ID

  569516401

Applicable component levels

• R230 PSY UI13510

     UP13/12/28 P F312 ð

Fix is available

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