CICS Transaction Gateway V5 The WebSphere ... - IBM Redbooks

94 CICS Transaction Gateway V5
MAXSOCKETS SIT parameter
The SIT parameter MAXSOCKETS controls the maximum number of sockets
that may be managed in a CICS region. This is set as follows:
► If the user ID that CICS is running under has superuser authority, then the
default value is 65535.
► If not, the default is the value of the MAXFILEPROC parameter specified in
SYS1.PARMLIB member BPXPRMxx.
Note that sockets created by Java programs running on threads that are not
managed by CICS do not count towards the limit.
The MAXSOCKETS value can be seen using the CICS command CEMT I TCPIP
(see Figure 5-9). The MAX field shows the maximum number of sockets, and the
ACT field shows how many sockets are active on the region. The value of
MAXSOCKETS can also be changed using CEMT.
I TCPIP
STATUS: RESULTS - OVERTYPE TO MODIFY
Tcp Ope Act(00006) Max( 00255 )
Figure 5-9 CEMT showing MAXSOCKETS
SYSID=PJA1 APPLID=SCSCPJA1
CICS statistics
It is possible to obtain statistics from CICS about TCP/IP and ECI over TCP/IP.
This is done with the CICS Statistics Print sample program. To use this, we
performed the following steps:
1. We installed the group DFH$STAT with the CICS command CEDA INS
G(DFH$STAT).
2. We ran the statistics print transaction with the CICS command STAT.
3. We pressed PF4. This displayed the Report Selection screen.
4. We selected the CICS functions TCP/IP and TCP/IP Services, as shown in
Figure 5-10 on page 95.