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RMF7127-FIX WLMSEC/SEM DATA ELEMENTS FOR Z/OS 2.2 + OA54915

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Article ID: 145814

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Updated On:

Products

MICS Resource Management

Issue/Introduction

After applying RMF7115 - z/OS 2.3 Workload Manager Updates, twelve   
data elements in the WLMSEC and WLM_EC Service/Report Class Resource 
Consumption files, and four data elements in the WLMSEM and WLM_EM   
Service/Report Class Response Time files might erroneously contain   
zeros.                                                               
                                                                     
The problem can occur for z/OS LPARs running z/OS 2.2 with IBM APAR  
OA54915 applied.                                                     
                                                                     
If you are running z/OS 2.3 or later, or you have not applied IBM    
APAR OA54915, this problem does not impact you.                      
                                                                     
With z/OS 2.3, IBM adds seven replacement fields to the SMF type 72  
subtype 3 record that contain higher precision values for previously 
existing fields.  With RMF7115, MICS reads the original "lower       
precision" fields, and if the SMF 72-3 section length indicates that 
the "higher precision" fields are present, MICS reads the new "higher
precision" fields, replacing the original "lower precision" values   
originally read-up.                                                  
                                                                     
The problem is that IBM APAR OA54915, when applied to an LPAR running
z/OS 2.2, expands the section containing these metrics by 56 bytes of
"reserved" binary zeros.  Because z/OS 2.2 does not generate the new 
"high precision" values, the fields in this 56 byte area remain zero.
                                                                     
When MICS processes the section, because it is long enough to contain
the "higher precision" fields, the seven data elements are populated 
with zeros, overlaying the values input from the "lower precision"   
fields.                                                              
                                                                     
The following nine data elements are directly impacted.              
                                                                     
  - SECTBADT  Total Batch Affinity Delay Time                        
  - SECTBCDT  Total Batch JCL Conv Delay Time                        
  - SECTBPDT  Total Batch Post Conv Delay Time                       
  - SECTOESQ  Trans Elapsed Time Sum of Squares                      
  - SECTOQDT  Total Queue Delay Time                                 
  - SECTOTET  Transaction Elapsed Time                               
  - SECTOXET  Transaction Execution Time                                                                                             
  - SEMTOTET  Transaction Elapsed Time                               
  - SEMTOXET  Transaction Execution Time                             

Additionally, the following seven derived data elements are          
indirectly impacted because the data elements above are used in      
derivation equations:                                                
                                                                     
  - SECAVQUE  Avg Transaction Queue Time                             
  - SECAVTET  Avg Transaction Elapsed Time                           
  - SECAVXET  Avg Transaction Execution Time                         
  - SECSDTET  Standard Deviation of Avg Elapsed Time                 
  - SECTOQUE  Total Transaction Queue Time                                                                                            
  - SEMAVTET  Avg Transaction Elapsed Time                           
  - SEMAVXET  Avg Transaction Execution Time                         
                                                                     
SYMPTOMS                                                             
The data elements listed above contain zeros, when non-zero values   
are expected.                                                        
                                                                     
IMPACT                                                               
Analysis of Service and Report Classes using the data elements listed
above is impossible because the data elements contain zeros.         

CIRCUMVENTION
None         

Environment

Release : 14.2

Component : CA MICS HARDWARE AND SCP ANALYZER

Resolution

RMF7127