We are suddenly facing a problem in the PRD system. There user are getting the below error and if they restart there system than it is solved
Load balancing error 88: Cannot connect to message server (rc=9)
few days back We have upgrade the system from ecc5 to ecc6 and its only
Please suggest why the error is coming and how to solved it
check the /etc/services file for a proper port setting for the R/3 message server "sapms<sid>" at 36xx. You can try connecting the SAPgw directly to the dispatcher at port 32xx where XX is the instance number. If that connection is good, then it appears to be a logon load balancing configuration problem which uses the message server.
This is usually because it cannot connect to the message server. Please check the dev_ms for any errors. if it is intermittent it is likely to be a network problem ( see note 500235 Network Diagnosis with NIPING.
Check following SApnotes :
#n21559: Examination of SAPGUI problems could be useful.
Please also check the note 882741 for the more info about this problem.
following links will help you :
Logon Load Balancing
Message Server-Based Logon and Load Balancing (Redirection)