During normal processing, CCITCPGW received TCP receive queue constrained

book

Article ID: 6743

calendar_today

Updated On:

Products

CA CIS CA Common Services for z/OS CA 90s Services CA Database Management Solutions for DB2 for z/OS CA Common Product Services Component CA Common Services CA Datacom/AD CA ecoMeter Server Component FOC CA Easytrieve Report Generator for Common Services CA Infocai Maintenance CA IPC Unicenter CA-JCLCheck Common Component CA Mainframe VM Product Manager CA Chorus Software Manager CA On Demand Portal CA Service Desk Manager - Unified Self Service CA PAM Client for Linux for zSeries CA Mainframe Connector for Linux on System z CA Graphical Management Interface CA Web Administrator for Top Secret CA CA- Xpertware CA Compress Data Compression for MVS CA Compress Data Compression for Fujitsu

Issue/Introduction

CA-CCI address space CCITCPGW yields:

12:03:37 BPXF024I (SYSLOGD) May 15 16:03:37 MVSASYS1 TRMD.TCPIPÝ396¨: EZZ8662I 

12:03:37 TRMD TCP receive queue constrained entry logged: 05/15/2017 

12:03:37 16:03:23.42 , connid= A9133AAB , jobname= CCITCPGW , lipaddr= 

 

 

Cause

The format of the PROTOCOL statement is: PROTOCOL(protocol,netparm,retry,sysid,maxru,start/stop)  

In this case, the CAICCI PROTOCOL statement was coded as: 

PROTOCOL(TCPIPGW,7102,20,ASYSCCI) which sets the retry time to 20 minutes causing a 20 minute delay for the shutdown of CCITCPGW.

This value was detrimental to processing, and caused the "constrained" message.

 

Environment

z/os

Resolution

The default retry time should be 2 minutes, and the "delay" time would be 2 minutes as well. This will prevent the "constrained" message while dealing with unexpected misconfigurations

To accomplish the above, adjust the CAICCI protocol parm to:

PROTOCOL(TCPIPGW,7102,2,ASYSCCI) 

 

 

Additional Information

https://docops.ca.com/ca-common-services-for-z-os/14-1/en/component-reference/caicci-control-options/control-options-summary-caicci/protocol-protocol-netparm-retry-sysid-maxru-start-stop