On 7/3/2011 8:53 AM, John McKown wrote:
As I recall, you have a program running on a PRB. It issues a LINK which
runs on a SVRB (as do all type 3 and 4 SVCs). The LINK runs the
requested program on a PRB. If you abend in the second, the dump will
show the TCB (TCBRBP) pointing to the second PRB which points (RBLINKB)
to the SVRB which points to the first PRB which points back to the TCB.
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/iea2d510/57.1.1
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/iea2d310/211.1.1
I strongly suspect that you're mistaken. LINK runs under an
SVRB, builds a PRB for the desired program, and exits, causing
its SVRB to be removed from the chain. In a dump you will see
two consecutive PRBs.
Old, old system code tends to be parsimonious, and once the
lower PRB is built, there is no need for services requiring the
SVRB.
Gerhard Postpischil
Bradford, VT
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