A fix is available
APAR status
Closed as program error.
Error description
CSOL stops issuing ACCEPT to TCPIP once a non-zero return code is received from OMVS on the ACCEPT. In this case the error BPX1AIO ACCEPT FAILED, RC = 0000007F RSN = 1102024D was issued by telnet which indicated JRMAXSOCKETS. The system wide socket limit was reached. A close/open of TCPIPSERVICE is required to clear the problem of CSOL refusing ACCEPTs, after the reason for the bad Return Code is corrected. A message from CICS regarding the problem CSOL has encountered is needed.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All CICS Users * **************************************************************** * PROBLEM DESCRIPTION: The ACCEPT call for a TCPIPSERVICE * * fails and is not re-issued by CICS. * **************************************************************** * RECOMMENDATION: * **************************************************************** The CICS TCPIP listener task (CSOL) processes incoming connections via an outstanding ACCEPT. After processing the connection it issues another ACCEPT waiting for more work. This ACCEPT fails leaving the listener task unable to accept further connections for this TCPIPSERVICE. Additional Keywords: MAXSOCKETs JRMAXSOCKETS TCP IP
Problem conclusion
DFHSOLS has been amended to issue a new message, DFHSO0130, and deregister the TCPIPSERVICE, when a non zero return code is passed back from a BpxAsyncio ACCEPT call. The CICS Transaction Server for z/OS 3.2 Messages and Codes book, GC34-6827-00, has been updated with the new message DFHSO0130 inserted at page 1008 after message DFHSO0129A as follows: DFHSO0130 DATE TIME APPLID A TCPIP ACCEPT call has failed. The TCPIPSERVICE TCPIPSERVICE on port PORTNUMBER , at IP address IPADDRESS will be closed. The values returned are bpx_return_value( BPX RETURN VALUE ), bpx_return_code( BPX_RETURN_CODE ), and bpx_reason_code( BPX_REASON_CODE ). EXPLANATION: A TCP/IP ACCEPT call has returned an error. SYSTEM ACTION: An exception trace entry is made in the trace table. No system dump is taken, unless you have specifically requested a dump in the dump table. CICS continues unless you have specified in the dump table that CICS should terminate. The TCPIPSERVICE tcpipservice on port portnumber at the specified IP address is shutdown. When this shutdown is complete message DFHSO0108 is issued. The return value, return code and reason code reported by Unix System Services are displayed to aid with diagnostics. USER RESPONSE: Determine the reason for the ACCEPT failure. The return code and reason code included in the message text are described in the z/OS UNIX System Services Messages and Codes manual. A possible cause of this error is if TCP/IP has reached MAXSOCKETS. Check the system console for any messages issued by TCP/IP and take the recovery action indicated. The TCPIPSERVICE tcpipservice is closed, and after the TCP/IP problem has been resolved, the closed TCPIPSERVICE should be reopened. DESTINATION: Console MODULE: DFHSOLS XMEOUT PARAMETERS: date, time, applid, tcpipservice, portnumber, ipaddress, bpx return value, bpx_return_code, bpx_reason_code
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PK51049
Reported component name
CICSTS V3 Z/OS
Reported component ID
5655M1500
Reported release
500
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2007-08-16
Closed date
2007-09-20
Last modified date
2007-10-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK29469
Modules/Macros
DESSOAN DESSOLS DFHMESOC DFHMESOE DFHMESOK DFHSOANC DFHSOAND DFHSOCCC DFHSODCC DFHSOLS DFHSOREC DFH51049
GC34682700 |
Fix information
Fixed component name
CICSTS V3 Z/OS
Fixed component ID
5655M1500
Applicable component levels
R500 PSY UK29469
UP07/09/27 P F709
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
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Document Information
Modified date:
02 October 2007