Hi folks, as I mentioned later, I post IBM answer at PMR:
DFSMS : Managing Catalogs explains in topic "Specifying the Number of Concurrent Requests" the paameter STRNO. This is the number of concurrent read requests for a BCS and can have from 2 to 255. >From this manual: . Initially define the catalog with STRNO(3). You can monitor the adequacy of this value by using the Resource Measurement Facility (RMF) to watch for enqueues on the resource SYSZRPLW.catname, and I/O contention on catalog volumes. SYSZRPLW is the major name of the resource, and catname (the name of the catalog) is the minor name. An indication of enqueue contention is given by the I/O service times, not necessarily the number and frequency of enqueues on this resource. . Seeing reported pmrs, in calalog heavy used, STRNO=3 may be too low and it is recommeded to set STRNO of 5 - 7. This is also indicated on apar II10752. Regards Christian Blesa DMR-Qualitas ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html

