PH35726: SEQUENTIAL NUMBER BUILT-IN DATASOURCE ACCESS, WHEN SHARED ACROSSUSERS, IS UNREASONABLY SLOW IN RPT

Rational Service Tester for SOA Quality V10.2.0

APAR status

• Closed as program error.

Error description

• When trying to maximize throughput of their simple RPT 10.0.2
  HTTP test, a customer found that a request which contained a
  substitution from the Sequential Number built-in datasource was
  taking substantially longer to execute than expected.  The
  datasource was configured to be shared across all users
  ("Execute for individual user" was not checked) so that each
  user would get a unique value.  Further testing showed that
  accessing this datasource could take over a 1000 times longer
  than a non-shared Sequential Number datasource (where "Execute
  for individual user" was checked).  It is understandable that
  there would be some increased access time with the shared
  datasource due to the need to coordinate access among the users
  but this degree of increase seems unreasonable, especially since
  the Sequential Number access time is 100s of times larger than
  the time for a shared dataset.
  

Local fix

• As a workaround, the customer created a dataset with sequential
  numbers and used this, with Open mode set to "Shared (per test
  execution) and Access mode set to Sequential, instead of the
  Sequential Number datasource.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * RPT Users                                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See error description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• Fixed
  

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

  PERF TESTER WIN

• Fixed component ID

  5724J9601

Applicable component levels

• RA02 PSY

     UP