This unsolicited message is issued at 30-second intervals as long as data flow continues to be stalled for an RTP pipe.
puname is the name of the HPR PU.
cpname is the name of the CP at the other end of the pipe.
HPR continues to wait for the partner RTP to acknowledge receipt of the NLPs identified as causing the data flow stall. When all those NLPs are acknowledged, the data flow stall is considered alleviated and IST1957I is issued.
Use the DISPLAY NET,ID=puname or DISPLAY NET,RTPS,STALL=YES commands to monitor stalled RTP pipes.
If the data flow stall persists, issue VARY procname,INACT,ID=puname,TYPE=FORCE to deactivate the HPR PU and end the stalled sessions.
If you want VTAM® to automatically deactivate stalled RTP pipes after a specified amount of time, use the HPRSTALL start option. See the HPRSTALL start option information in z/OS Communications Server: SNA Resource Definition Reference.
If data flow stalls are prevalent and persistent, contact VTAM support for instructions about gathering documentation for problem determination.
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