PM72056: Concurrent API programs of a project take same build tag name

Rational Build Forge Interim Fix 1 for Version 7.1.3.4

APAR status

• Closed as program error.

Error description

• 1. Problem description
  
     Concurrent api programs take same build tag name
  
  2. Cause of the problem
      More than one build take $B value before increasing its
  value.
  
  3. Environment : N/A (all platform and all BF versions)
  
  4. Reproduce steps
  
     a) write a simple java API program
  
    for(int i=0 ;i? 5 ;i++) {
     Project proj = Project.findByName (conn, projName);
     proj.fire ();
    }
  
     b) even $BF_T can not avoid the problem becaue it is 1 second
  base
  
  5. Workarond
  
      put interveral more than 1 second in loop;
  
  
    for(int i=0 ;i? 5 ;i++) {
     Project proj = Project.findByName (conn, projName);
     proj.fire ();
                                                  Thread.sleep(1
  *1200);
  
    }
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  This is competing case. Program reads the tag firstly, then
  increase it if needed, but during the read and increase
  interval,if other firing operation reads the tag, it will
  get the same tag's value with the previous firing operation.
  It is rare case for the reading and increasing is very
  quick.
  

Problem conclusion

• Adding a program lock when reading and increasing the tag.
  Before we complete the reading and increasing operation,
  program doesn't release the lock.
  

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:

Fix information

• Fixed component name

  BUILD FORGE SE

• Fixed component ID

  5724S2706

Applicable component levels

• R713 PSN

     UP