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This RFE is satisfied by CICS TS 5.3 which is generally available from December 11th 2015.
The documentation on the delete command contains the following words:
The DELETE command with GENERIC option should be used with caution. If the generic key specified will match a very large number of records, then the CICS unit of work will be holding a very large number of record locks until syncpoint. This could cause storage issues within the CICS region, or if the file is an RLS file, it could cause excessive use of coupling facility resources and affect other systems. Instead, consider using a series of generic deletes (by using generic keys that will match less records) and syncpoint after each range of records has been deleted.
This RFE is satisfied by CICS TS 5.3 which was announced on October 5th 2015 with a planned general availability date of December 11th 2015.
For more information see the announcement letter http://www.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&supplier=897&letternum=ENUS215-363
Due to processing by IBM, this request was reassigned to have the following updated attributes:
Brand - Servers and Systems Software
Product family - Transaction Processing
Product - CICS Transaction Server
For recording keeping, the previous attributes were:
Brand - WebSphere
Product family - Transaction Processing
Product - CICS Transaction Server
The CICS documentation will be updated to urge caution in the use of generic delete. Suggested words are:
The use of generic delete should be used with caution. If the generic key specified will match a very large number of records, then it will mean the CICS unit of work will be holding a very large number of record locks until syncpoint. This can cause storage problems within the CICS region, or if the file is an RLS file, it can cause excessive use of coupling facility resources ultimately affecting other systems. A better approach is to use a series of generic deletes (by use of generic keys that will match less records) and to syncpoint after each range of records has been deleted.