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APAR NUMBER:  PJ30251                           
PRODUCT:  TPF4  
FUNCTIONAL AREA:  CONTINUOUS DATA COLLECTION (CDC)  
SHIPPED IN PUT:  20  
   

ABSTRACT:  
With APAR PJ29925 applied, CDC can not be configured to run with  
multiple processors in a loosely coupled complex.  
APAR CONTENTS:  
FEATURE   TYPE                STATUS    NAME                                
Base      C                   Changed   source/rt/base/cdcp.c  
Base      CPP                 Changed   source/rt/base/cdcu.cpp  
   
PREREQUISITE APARS:  To be applied in order listed.  
Base      C                   Changed   source/rt/base/cdcp.c  
 PJ27095(12)  PJ27775(15)  PJ28097(15)  PJ29925(19)  PJ30137(19)  
 PJ30215(20)  PJ30233(20)  PJ30253(20)  
Base      CPP                 Changed   source/rt/base/cdcu.cpp  
 PJ29925(19)  PJ30215(20)  
   

COMMENTS:  
Continuous data collection (CDC) can be configured to use an external  
MQSeries server. When doing so, it uses a transmit queue, a sender  
channel, and a remote queue definition. In a loosely coupled  
environment, CDC needs to define each one of them for every CPU in the  
complex. The examples that are provided in the documentation defined a  
remote queue with the same name for each processor because CDC writes  
to the same queue when it is using a remote MQSeries server or when it  
is using the TPF Queue Manager. However, in a loosely coupled  
environment, TPF MQSeries will not allow multiple definitions of the  
same queue name on different CPUs.  
   

SOLUTION:  
CDC now uses a uniquely named queue per processor: CDCRTQ. (for  
example, CDCRTQ.A, CDCRTQ.B, and so on). This is true even in an  
environment that is not loosely coupled. This change also requires  
users to download the latest version (Version 1.3) of the CDC client at  
http://www.ibm.com/software/htp/tpf/download/tools. The CDC client  
also contains a fix for the DASD I/O charts for the Subsystem tabs.  
Previously, the systemwide DASD I/Os were shown instead of the  
subsystem-specific value.  
   
   

DEPENDENCIES  
   
SEGMENTS TO BE ASSEMBLED OR COMPILED:  
None.  
   
SEGMENTS TO BE LINK EDITED:  
cdcp40.exe (Shipped in Tar File)  
   
COREQS:  
None.  
   

MIGRATION CONSIDERATIONS:  
None.  
   
UPDATED INFORMATION UNITS:  
TPF System Performance and Measurement Reference  
   
See your IBM representative if you need additional information.  
   

DOWNLOAD INSTRUCTIONS:  
http://www.ibm.com/software/htp/tpf/pages/maint.htm
   
-- END APAR PJ30251 
       


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