Reorganization function restrictions

• The SELECT_UOW keyword enables you to specify the technique to be used by the online reorganization function in the selection of UOWs to be reorganized. The normal default for this keyword is SELECT_UOW=IOVF, which causes reorganization of only UOWs that extend into IOVF. However, if compression is requested (either by specifying COMPRESS=YES or COMPRESS=segmentName), the online reorganization function will automatically use a value of SELECT_UOW=ALL.

• When the online reorganization function defaults to SELECT_UOW=ALL because compression is requested by the COMPRESS keyword, the online reorganization function will ignore any value that you specify on the FRAGMENTATION_PERCENT keyword and any alternate value that you specify on the SELECT_UOW keyword. Under this condition, Fast Path Online Reorg/EP will issue message BMC111197I to indicate that all UOWs will be processed.

• You cannot use the online REORGANIZE command to extend IOVF for an area when SDEP segments are defined in the DBD. However, you can use the online EXTEND command to extend IOVF when SDEPs are defined in the DBD. For more information, see Extending a DEDB online.

Control region requirement

When performing an online reorganization, you must define the database to the IMS Control Region with ACCESS=UP.