Solution : https://service.sap.com/sap/support/notes/92589 (Connexion à SAP Service Marketplace requise)
Résumé :
SAP systems may encounter errors such as 'Client host_sid_00 is not known to the message server' and 'Unable to reach central lock handler,' primarily when the TCP buffers overflow due to a high number of enqueue requests. This leads to blocked R/3 work processes and certain applications, affecting system stability and performance. SAP recommends adjusting the TCP receive and send buffer sizes to 1 MB using the OS/400 command CHGTCPA with parameters TCPRCVBUF and TCPSNDBUF. Restarting TCP/IP or performing an IPL is necessary to implement these changes and restore normal operations.
Mots Clés :
/usr/sap/trans directory, reach central lock handlerproblems, receive buffer size determines, central lock handlergi2, receive buffer size, remote system confirms, dequeue request fails, aborted dequeue call, buffered bytes drops, buffered bytes falls
Notes associées :
| 517589 | iSeries: Client copy performance |
| 484548 | iSeries: 3 tier system installation |
| 428855 | IBM i system values |
| 96732 | CC-INFO: DB2/390 - client copy is very slow |