There are Mainframe Application Tuner TN0894W messages in our CICS regions from time to time. What do they mean?

Products

• Mainframe Application Tuner

Issue/Introduction

You are noticing messages like this in your CICS LOG from time to time:

 14.02.55 STC13791 +TN0894W Field=pggcl accumulation over maximum value.

 TRAN=PPE1

 14.03.01 STC13791 +TN0894W Field=pgpcl accumulation over maximum value.

 TRAN=PPE1

 

The description of the message from the Message Guide is:

 

TN0894W

 

Field=aaaaa accumulation over maximum value. TRAN=bbbb

 

Reason:

 

This message indicates that an internal counter aaaaa is greater than or equal to X'FFFFFFFF' for transaction bbbb.

 

This situation can occur when a CICS transaction is run very frequently without being monitored by CA Mainframe Application Tuner.

 

Action:  None.

 

Origin:  TCnnCMPX

 

<END>

 

 

 

Environment

Release:
Component: MATUNE

Resolution

When CICS statistics are enabled Mainframe Application Tuner (MAT) collects most of the stats available for a transaction.  The internal counters are running counters.  In the case of these two messages MAT is counting channel gets and puts for transaction PPE1.

 

The message is indicating that MAT has exceeded the maximum number of occurrences that MAT can accumulate.

 

There is no harm here, MAT knows it has max'd the counter and the message is just a warning.  MAT won't overflow, or cause any problems.  The message is issued so users will know that if they start collecting stats about the transaction in question, the stats won't be accurate that MAT puts into the monitor file and the report will not be accurate because of the overflow.

 

How are these messages resolved?

 

Do you only request data for specific transactions using the CICS option in monitor definition?  If yes, you can run an unfiltered monitor so MAT actually reports on PPE1.  Those buckets will get cleared and the message will not be produced.

 

Can these messages be suppressed?  No, at this time MAT can not suppress these messages.