what is cics maxopentcbs
The MAXOPENTCBS system initialization parameter specifies the maximum number, in the range 1 through 4032, of open task control blocks (open TCBs) CICSÂ® can create in the pool of L8 and L9 mode TCBs. 1  If you do not specify the MAXOPENTCBS parameter, the MXT value will be used to set a value for the MAXOPENTCBS parameter. For more information on how the value is set from MXT, see Open TCB management.