DETACH CHANNEL Use the DETACH CHANNEL co.mand to detach a dedicated channel fro. a user
when the channel path is no longer required for virtual machine
operations. If DETACH CHANNEL is issued prior to the normal completion
of I/O activities on the dedicated channel path, those activities are
terminated. The format of the DETACH CHANNEL command is:
DETach CHANnel c [From] {US;rid} CHANIEL c FROM is the real address of the channel that is to be }
specifies the user identification of the virtual machine from which the channel is to be detached. If the optional keyword FROM is omitted, the userid cannot be FROM, FRO, FR, or F. If
the DETACH CHAIIEL command is invoked by a class B user to
detach a channel from his own machine, an asterisk (*) may be used. !2!!: A DETACH CHAINEL command followed immediately by an
ATTACH CHANIEL command may result in a message stating that
the specified channel is in use. DETACH CHANNEL processing
causes I/O to be asynchronously scheduled for each dedicated
device; DETACH CHANNEL processing does not for all I/O to
complete prior to returning control ,to the: terminal operator. A subsequent ATTACH CHANNEL command may fail due to this timing situation.
CHANNEL c DETACHED BY operator
is sent to the user from whose virtual machine the channel is
being detached. CHANIEL c DETACHED userid
is sent to the operator issuing the co.mand. CHANNEL c DETACHED userid BY operator
is sent to the primary system operator if he did not issue the
command. Section 3. CP Commands 67
DISABLE Use the DISABLE command to prevent low-speed communication lines,
including 2701, 2702, and 2703 lines (collectively referred to as 270x lines), 370x (ill E.ulation Progra* woae cnly), locally attached 3270 lines from accessing the VM/370 system. The remote 3270 configuration must be disabled by using the
DISABLE operand with the NETWORK command.
To disable 370x resources in RCP or PEP program mode, use the NETWORK DISABLE co.mand. If the line(s) selected are not active (not dialed
into or logged on), the line is disabled immediately. If the selected
line is active, it is disabled when the user does a LOGOFF to finish his
terminal session or issues a DISCONN command without the HOLD operand
specified. An ENABLE command issued to the line before the line is
physically disabled reinstates the enabled status, thus negating the
DISABLE command. The format of the DISABLE command is:
DISAble
{
raddr ••• }
ALL
raddr... are the addressees) (cuu) of any communication lines the
operator wishes to disable.
ALL specifies that all 270x communication lines, 370x facilities
in Emulation Program mode only), and locally attached 3270 lines, including the operator's line, are to be disabled. Issuing a QUERY LINES and NETWORK QUERY command enables you to examine the status of the communication lines.
Line designations may indicate up to 2700 line addresses. These
three-digit hexadeciaal addresses are checked against the line addresses
stored in the system table. If no match is found, an error message is
directed to the system consele. COMMAND COMPLETE 68 VM/370 Operator's Guide
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