LI72806: APM SEQ lockname will conflict, if 2 similarly named packages are bound at the same time.

APAR status

• Closed as program error.

Error description

• APM SEQ lockname may conflict for two different packages of the
  similar names.   This could result in unexpected lock symptoms,
  including lock timeouts, waits, deadlocks.
  
  As an example, this could happen from the Development Center
  like so:
  
  1. Launch Development Center.
  2. Select StoredProcedure name in StoredProcedure folder.
  3. Choose Build.
  
  Another Machine
  1. Launch Development Center.
  2. Select StoredProcedure name(Different name above
  StoredProcedure name) in StoredProcedure folder.
  3. Choose Build.
  
  If the package names used are similar, a lock contention will
  occur and db2pd will output something like below:
  Locks:
  Address            TranHdl Lockname                   Type
  Mode Sts Owner      Dur HldCnt Att    ReleaseFlg
  0x0000000160E881C0 14      554C4C4E554C4C473444435053 APM Seq
  ..X  G   14         1   0      0x0000 0x40000000
  0x0000000160E905C0 4       554C4C4E554C4C473444435053 APM Seq
  ..X  W   14         1   0      0x0000 0x40000000
  
  As a result, the creation of one or the other Stored Procedure
  might fail with a -911 (reason code 2 or 68).
  

Local fix

Problem summary

• APM SEQ lockname may conflict for two different packages of the
  similar names.   This could result in unexpected lock symptoms,
  including lock timeouts, waits, deadlocks.
  
  As an example, this could happen from the Development Center
  like so:
  
  1. Launch Development Center.
  2. Select StoredProcedure name in StoredProcedure folder.
  3. Choose Build.
  
  Another Machine
  1. Launch Development Center.
  2. Select StoredProcedure name(Different name above
  StoredProcedure name) in StoredProcedure folder.
  3. Choose Build.
  
  If the package names used are similar, a lock contention will
  occur and db2pd will output something like below:
  Locks:
  Address            TranHdl Lockname                   Type
  Mode Sts Owner      Dur HldCnt Att    ReleaseFlg
  0x0000000160E881C0 14      554C4C4E554C4C473444435053 APM Seq
  ..X  G   14         1   0      0x0000 0x40000000
  0x0000000160E905C0 4       554C4C4E554C4C473444435053 APM Seq
  ..X  W   14         1   0      0x0000 0x40000000
  
  As a result, the creation of one or the other Stored Procedure
  might fail with a -911 (reason code 2 or 68).
  

Problem conclusion

• Problem was first fixed in DB2 UDB Version 8.1, FixPak 17
  

Temporary fix

Comments

APAR Information

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

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

  LI72940 LI72947

Fix information

• Fixed component name

  DB2 UDE ESE LIN

• Fixed component ID

  5765F4104

Applicable component levels

• R820 PSN

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