ERROR max no of 100 conversations exceeded

Note 314530 - Number of RFC/CPIC connections for external clients
Symptom
The external RFC/CPIC server cannot open additional connections. The system issues the error message:
LOCATION    CPIC (TCP/IP) on local host
ERROR       max no of 100 conversations exceeded

Other terms
RFCLIB, CPIC, CPIC_MAX_CONV

Reason and Prerequisites
The number of parallel connections that can be kept in the library is set to 100.

Solution
By setting the environment variables CPIC_MAX_CONV, the library can manage multiple connections in  parallel.

Windows: set CPIC_MAX_CONV=<n>
 for example, set CPIC_MAX_CONV=500 (for 500 connections)

Unix: setenv CPIC_MAX_CONV <n>  ( csh )
 for example, setenv CPIC_MAX_CONV 500 (for 500 connections)

Unix: export CPIC_MAX_CONV=<n>  ( ksh )
 for example, export CPIC_MAX_CONV=500 (for 500 connections)

iSeries : ADDENVVAR ENVVAR(CPIC_MAX_CONV) VALUE(<n>)
 for example, ADDENVVAR ENVVAR(CPIC_MAX_CONV) VALUE(500) (for 500 connections)


Exception for CPIC/RFC server programs:
If an RFCserver program registers with 100 threads on the R/3 gateway, for example, 
100 connections are kept in the server program. Each RFC that runs on such a 
connection results in an additional entry in the connection list of the RFC server program.
This means that a maximum of 200 connections is possible under full load. Adjust the value of the  environment variable accordingly.