gtpd1m2l | Database Reference |
All objects that TPFCS files to DASD are written in 4-K pool records. As mentioned previously, the objects used by TPFCS are filed to DASD in a slightly different format from their representation in memory when they are actually used. The general nature of these differences is as follows:
The object data area is allocated when the object is first created and is filled as applications add elements to the associated collection. The number of bytes of the object data area currently in use is, therefore, dynamic. Sometimes, for compact structure objects only to save DASD space, TPFCS will strip the object of those bytes contained in the object data area that are not in use before filing the object in the TPF database. See How Some Objects Are Condensed to Save Space for more information.