TS/MP System Management Manual (G06.24+, H06.03+)

SERVER Commands
NonStop TS/MP System Management Manual—541819-001
12-6
FREEZE SERVER Command
!
prohibits all link managers from sending requests to a server class; the SCREEN
COBOL STOP-MODE special register value is ignored.
WAIT
directs the PATHMON process to complete this command pending acceptance by
the link managers of the communication freeze on the server class. This option
allows you to monitor the freeze operation as it takes place. The PATHMON
process attempts to freeze each server class and reports on each one as frozen or
pending freeze. The process then loops until all server classes are frozen.
You can abort the WAIT option by pressing the Break key.
Considerations
•
If you are using Pathway/iTS, consider these:
°
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, these
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 subsystem backs out the current transaction. After the THAW
command resumes terminal activity, the TCP 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 passes
control to the screen program for the appropriate action.
•
Unlike a TCP, 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
These commands freeze the specified server classes:
FREEZE SERVER CLASS-1
FREEZE (CLASS-2,CLASS-3) !