You can use CDBM to issue most of the IMS operator
commands that are valid for DBCTL across the DRA interface to DBCTL
to display and change the state of selected resources.
CDBM also provides a means of maintaining a command file
which stores commands. You can store commands for any reason, most
likely because you want to reuse them. These stored commands can include
more databases than the operator transaction panel has space for.
When dealing with databases, you can use an asterisk (*)
to refer to generic groups; for example DB21* refers to all databases
starting with the characters DB21. You can also use a plus (+) sign
in place of a single character; for example, DB+2 displays databases
DB12, DB22, DB32, and so on.
You can issue DBCTL commands via a menu panel, as shown
in Figure 1. This panel is obtained
by starting the CDBM transaction.
On this panel you can enter a DBCTL command, for example:
/DISPLAY DB ALL
or a group command, for
example:
/GROUP SAMPLE STA
There is also a help screen, as shown in Figure 2.
An example of the use of a /GROUP command from the CICS®-DBCTL Operator Transaction screen is shown in Figure 3.
Responses to commands issued from the CDBM screen are
returned on a screen like the one in Figure 4,
which shows the first of a number of screens resulting from a /DISPLAY
DB ALL command.
Alternatively, you can issue CDBM and the DBCTL command
directly, as follows:
CDBM /xxxxxxxx
where
/ is the default CRC and xxxxxxxx is an IMS operator
command that is valid for use with DBCTL and CDBM.
Note: IMS requires that each command is prefixed with
the default CRC. The CRC is present only for syntax checking; it does
not determine to which DBCTL the command is sent. You cannot use
a CRC value to route a command to a particular DBCTL system through
CDBM. It can be sent only to the one currently connected to CICS.
This DBCTL can have its own CRC value which is different from the
default one of '/'. However, this does not matter to CDBM, because
the '/' character is used only for syntax checking, and the command
is presented to the connected DBCTL without a CRC, using the AIB interface.
The /GROUP can also be entered in this way, for example:
CDBM /GROUP SAMPLE DIS.
The following IMS operator
commands are valid with CDBM:
/CHANGE
/CHECKPOINT (simple form) and /CHECKPOINT STATISTICS
/DBDUMP
/DBRECOVERY
/DELETE
/DEQUEUE
/DISPLAY
/LOCK
/LOG
/PSTOP
/RMCHANGE
/RMDELETE
/RMGENJCL
/RMINIT
/RMLIST
/RMNOTIFY
/START
/STOP
/SWITCH OLDS
/TRACE SET PI
/UNLOCK
/VUNLOAD
The following IMS operator commands are not valid
with CDBM and must be issued via the MVS™ console: