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- File control recovery blocks (only if a SHCDS
NONRLSUPDATEPERMITTED command has been used).
– Transient data queue definitions
– Dump table information
– Interval control elements and automatic initiate descriptors at shutdown
– APPC connection information so that relevant values can be restored during a
persistent sessions restart
– Logname information used for communications resynchronization
– Monitoring options in force at shutdown
– Statistics interval collection options in force at shutdown
– Journal model and journal name definitions
– Enqueue model definitions
– Temporary storage model definitions
– URIMAP definitions and virtual hosts for CICS Web support.
Most resource managers update the catalog whenever they make a change to
their table entries. Terminal and profile resource definitions are exceptions (see
the next list item about the catalog warm keypoint). Because of the typical
volume of changes, terminal control does not update the catalog, except when:
– Running a VTAM query against a terminal
– A generic connection has bound to a remote system
– Installing a terminal
– Deleting a terminal.
v A partial warm keypoint at normal shutdown. This keypoint contains an image
copy of the TCT and profile resource definitions at shutdown for use during a
warm restart.
Note: The image copy of the TCT includes all the permanent devices installed
by explicit resource definitions. Except for some autoinstalled APPC connections,
it does not include autoinstalled devices. Autoinstalled terminal resources are
cataloged initially, in case they need to be recovered during an emergency
restart, but only if the AIRDELAY system initialization parameter specifies a
nonzero value. Therefore, apart from the APPC exceptions mentioned above,
autoinstalled devices are excluded from the warm keypoint, and are thus not
recovered on a warm start.
v Statistics options.
v Monitoring options.
v The recovery manager’s control record, which includes the type-of-restart
indicator (see “How the state of the CICS region is reconstructed” on page 34).
All this information is essential for a successful restart following any kind of
shutdown.
Local catalog
The CICS local catalog data set represents just one part of the CICS catalog, which
is implemented as two physical data sets.
The two data sets are logically one set of cataloged data managed by the CICS
catalog domain. Although minor in terms of the volume of information recorded
on it, the local catalog is of equal importance with the global catalog, and the data
should be equally protected when restarts are performed.
32 CICS TS for z/OS 4.1: Recovery and Restart Guide