DASD space release

The DLET call is not a request for release of DASD space. Depending on the database organization, DASD space can or cannot be reused when it is released.

DASD space for a segment is released when the following conditions are met:
  • Space has been released for all physical dependents of the segment.
  • The segment is physically deleted (PD bit is set or being set on).
  • If the segment is a logical child or logical parent, then it must be physically and logically deleted (PD bit is set or being set on and LD bit is set or assumed set).
  • If the segment is a dependent of a logical child (and is variable intersection data) and the DLET call was issued against a physical parent of the logical child, the logical child must be both physically and logically deleted.
  • If the segment is a secondary index pointer segment, the space has been released for its target segment.