CICS VSAM Transparency for z/OS, Version 1.2


Number of concurrent threads

Start of changeCICS® VT supports multiple access control blocks (ACBs) from the same program. For example, multiple EXEC CICS STARTBR commands can be issued for the same file by the same program. Similarly, a batch program can use multiple request parameter lists (RPLs) for the same ACB. The value you specify for the number of concurrent threads option defines the maximum number of RPLs within all open ACBs that can be used for this data set. For each concurrent thread, the size of the DDM driver module increases, so only specify a value greater than 1 when necessary.End of change

If a program tries to open an ACB and the DIM cannot support another concurrent thread, an abend occurs. This results in a transaction abend code 3105 for a CICS program. A batch program terminates with a U3105 abend code.





Last updated: February 8, 2013 20:42:49