Extending SDEP in control intervals (CI), units of work(UOW), or cylinders

The SDEP storage portion can be extended in control intervals (CI), units of work, or cylinders. To extend the SDEP storage area, use the EXTEND_SDEP keyword with the EXTEND command to specify the amount of space to be added.

To extend SDEP storage without reorganization

Ensure that adequate space is present on the primary volume of the target area data set to accommodate the request before trying to increase the SDEP portion during the Extend function. If adequate space is not present, allocate additional volumes to the area data set by using IDCAMS ALTER ADDVOLUME.
Warning
Note
If an IDCAMS ALTER ADDVOLUME is used while the area data set is opened and allocated (online to IMS), the data set must be closed and reopened so that VSAM can recognize the added volume. Use the /DBR command to close the data set, and the /STA command to reopen the data set.
Before running the Extend function with the EXTEND_SDEP, BMC recommends that you execute the SDEP Scan/Delete utilities.
Warning
Note
During the SDEP extension, the number of SDEP CIs that are being added is less than the number of SDEP CIs in the lower cycle count. As a result, the additional SDEP CIs that are being added cannot be moved and are not available for use.
Run the Extend function with the EXTEND_SDEP keyword to specify the number of control intervals to add.

Sample Control Statements for Extending SDEP

Sample control statements for extending SDEP by using control intervals.

Sample control statements for extending SDEP by 100 control intervals

EXTEND DBD=<dbdname>, IAREA=<areaname>,
EXTEND_SDEP=(Control_INTERVALS,100)

Sample control statements for extending SDEP by using cylinders.

Sample control statements for extending SDEP by 50 cylinders

EXTEND DBD=<dbdname>, IAREA=<areaname>,
EXTEND_SDEP=(CYLINDERS,50)

Sample output when adding control intervals to the SDEP portion

The following example shows message BMC110000I that is generated when adding control intervals to the SDEP portion:

BMC110000Idbdname , areaname: AREA extension committed date, time

Subsequent maintenance on the DEDB to allow for extended SDEP portion

The next time that you perform maintenance on the DEDB, you might need to change your area data set VSAM cluster definition to allow for the extended size of the SDEP portion.