Pages 4 and 5 of the Management Class Define panel contain the class transition attributes. The class transition attributes apply to both OAM and HSM class transition
processing.
- Time
Since Creation Years, Months, or Days
- Indicate
the time since the creation date that must pass before
transition occurs.
- Time Since Last Use
Years, Months, or Days
- Indicate the time since the last reference
date that must pass
before transition occurs.
- Periodic
- Indicates
a time based on the calendar at which transition occurs.
Restriction: The Time
Since Creation, Time Since Last Use, and Periodic fields
cannot be specified together. A maximum date of 9999/12/31 is used
if the requested Time Since Creation or Time Since Last Used exceeds
the maximum date.
- Monthly On Day
- Specifies the day of each month that the transition occurs.
If there are fewer days in the month than the number specified, the
transition occurs on the last day of the month.
- Quarterly On Day or In Month
- Specify the time of each
quarter that the transition occurs.
If both Day and Month are specified, this attribute specifies the
day of the month in each quarter that the transition occurs. If there
are fewer days in the specified month than the number specified in
Day, then the transition occurs on the last day of the specified month.
- Yearly On Day or In Month
- Specify the
day or month of each year that transition occurs.
If both Day and Month are specified, this attribute specifies the
day of the month in each year that transition occurs.
- FIRST
- Specifies that the transition occurs
on the first day of each
month, quarter, or year, whichever attribute is specified.
- LAST
- Specifies that the transition
occurs on the last day of each
month, quarter, or year.
- Transition
Copy Technique
- Specify which copy technique should be used
for the class transition
of data associated with this management class.
- FRP
- Fast replication preferred
- FRR
- Fast replication required
- STD
- Standard (the default)
- PMP
- Flashcopy Preserve Mirror preferred
- PMR
- Flashcopy Preserve Mirror required
For more information about fast replication, FlashCopy®, Preserve Mirror
and other copy services functions, refer toz/OS DFSMS Advanced Copy Services.
- Serialization Error Exit
- Specify the application or user
exit to invoke when there is a serialization error. This is used by HSM during a class
transition to notify DFSMSdss of which application needs to be invoked when a serialization
error occurs.
- DB2
- DB2 is invoked with the DB2 CAF interface. DB2 closes the data set. If there
are no DB2 transactions in progress and the data set is successfully closed and unallocated,
then the data set is exclusively serialized. If exclusive access is obtained, then the data
set is transitioned. After the data set has moved, DB2 is reinvoked to allocate and open the
data set. If the serialization cannot be obtained or there are active DB2 transactions, the
transition fails. Only DB2 objects should be assigned to a management class with this
setting.
- CICS
- CICS is invoked with EXCI. CICS makes the data set unavailable for use
by CICS and closes all files open to the data set. If these steps are successful, the data
set is exclusively serialized and then transitioned. After the data set has moved, CICS is
reinvoked to enable the CICS files to use the data set and make available the data set to
be used by CICS. If the serialization cannot be obtained on the second attempt, then the
transition fails. Only CICS data sets should be assigned to a management class with this
setting.
Note: See
Sample Batch Job for CICS Definitions for a sample batch job that will define the group,
transaction, program, session and connection to allow the CICS server program to process
the closing and opening of files.
- ZFS
- z/OS File System causes an UNMOUNT to be issued. If the data set is
successfully unmounted, then the data set is exclusively serialized. The unmount fails if
the file system is currently accessing the data set. If exclusive access is obtained, then
the data set is transitioned. After the data set has moved, zFS is reinvoked to mount the
data set. Only zFS data sets should be assigned to a management class with this
setting.
- EXIT
- A user exit is invoked to unserialize the data set. The exit is invoked
twice: initially to unserialize the data set, and a second time after the transition in
order to reserialize the data set. The transition is performed if the data set can be
exclusively serialized after the user exit has been initially invoked. A valid exit should
be in place before this option is specified. No default exit is provided. The exit invoked
is ADRDYEXT. See
z/OS DFSMS Installation Exits
for information about how this exit can be used.
- NONE
- The transition should fail with no additional action. This is the default. As
a default, DFSMShsm does not issue error messages for data sets that fail serialization.