Pathway/XM System Management Manual

PXMCOM Commands
Compaq NonStop™ Pathway/XM System Management Manual—426761-001
11-25
FREEZE SERVER
Considerations
•
Unless ! is specified, the freeze does not take effect until all SCREEN COBOL
STOP-MODE special registers have a value of zero and no server in the server class
has incomplete or outstanding requests. In the interim, the server class is put into the
FREEZE-PENDING state.
•
If a SCREEN COBOL requester attempts to send a request to a frozen server class
and the SEND statement is coded without an ON ERROR clause, the following
occurs:
°
If the terminal is not in TMF transaction mode, the terminal pauses until the
server class is thawed.
°
If the terminal is in TMF transaction mode, the terminal pauses and the TMF
system backs out the current transaction. After the THAW command resumes
terminal activity, the TCP process directs the TMF software to restart the
transaction at the BEGIN-TRANSACTION verb and to assign a new transaction
identifier, and increments the special register RESTART-COUNTER by 1.
If the SEND statement is coded with an ON ERROR clause, the TCP process passes
control to the screen program for the appropriate action.
•
Unlike a TCP process, a LINKMON process does not call any TMF procedures or
increment any special TMF registers. It is the responsibility of the Pathsend process
to detect any errors (by an error code) and proceed as required by the application.
Examples
The following command freezes the server class named CLASS-1:
FREEZE SERVER CLASS-1
The following command freezes all the server classes defined as members of the group
named SALES:
FREEZE GROUP SALES
The following command immediately freezes all the server classes in the Pathway/XM
environment:
FREEZE SERVER * !
The following command freezes all the server classes in the system and waits until all
terminals are frozen to complete the command:
FREEZE SERVER *, WAIT