NO ACB AVAILABLE, how to add additional virtual terminals (VT's) to my TPX?

Products

• TPX - Session Management

Issue/Introduction

Running short on available ACBs with some users getting error message NO ACB AVAILABLE.
Is there a way to dynamically add additional virtual terminals (VT) to my TPX without a TPX restart ?

Environment

Release: TPX 5.4
Component: Z/OS

Resolution

1. Build a VTAM member to define the additional GROUP and/or UNIQUE virtual terminals.  
   For example, create member TPXNEW in the library defined in the TPX VTAMLST DD statement:
   

   TPXNEW VBUILD TYPE=APPL

   *TPX,UNIQUE DO NOT REMOVE - THIS COMMENT IDENTIFIES UNIQUE VIRT TERM

   *
Z44IJSU0 APPL MODETAB=ISTINCLM,DLOGMOD=T3278M2,SRBEXIT=NO,EAS=1
Z44IJSU1 APPL MODETAB=ISTINCLM,DLOGMOD=T3278M2E,SRBEXIT=NO,EAS=1
Z44IJSU2 APPL MODETAB=ISTINCLM,DLOGMOD=T3278M3,SRBEXIT=NO,EAS=1
*     END OF UNIQUE VIRTUAL TERMINALS
*
*TPX,GROUP DO NOT REMOVE - THIS COMMENT INDENTIFIES GROUP VIRT TERM
*
Z44IGRU0 APPL MODETAB=ISTINCLM,DLOGMOD=T3278M2,SRBEXIT=NO,EAS=1
Z44IGRU0 APPL MODETAB=ISTINCLM,DLOGMOD=T3278M2E,SRBEXIT=NO,EAS=1
Z44IGRU0 APPL MODETAB=ISTINCLM,DLOGMOD=T3278M3,SRBEXIT=NO,EAS=1
*     END OF GROUP VIRTUAL TERMINALS*

2. Vary the new member ACTIVE in VTAM.
3. IN TPXOPER, issue the VTADD command (VTADD TPXNEW) to add the newly created VTAM member TPXNEW.