The database administrator can specify the RMTUSERS parameter when starting the application server to set the maximum number of remote application requesters that are allowed to connect to the server. This is similar to the MAXCONN value in the VM directory of the DB2 for VM database server machine. This parameter helps to balance the workload between local and remote processing.
When the RMTUSERS value is greater than the number of available DB2 for VSE agents (defined by NCUSER), some remote users must wait for a DB2 for VSE agent to service their request. Normally a DB2 for VSE agent is reassigned to a waiting user at the end of a logical unit of work (LUW). The DB2 for VSE application server supports privileged access that allows a remote user to keep a DB2 for VSE agent for multiple LUWs until the end of the conversation.
This parameter specifies whether or not a syncpoint manager (SPM) will be used to coordinate DRDA-2 multi-site-read, multi-site-write distributed unit of work activity.
If Y is specified, the server will use a syncpoint manager, if possible, to coordinate two-phase commits and resynchronization activity. If N is specified, the application server will not use an SPM to perform two-phase commits. If N is specified, the application server limited to multi-site-read, single-site-write distributed units of work and it can be the single write site. If Y is specified, but the application server finds that a sync point manager is not available, then the server will operate as if N was specified.
The default is SYNCPNT=Y when RMTUSERS is greater than zero. When RMTUSERS=0, the SYNCPNT parameter is set to N.