All connections established to members while a data set was opened are released when the data set is closed. If the connection was established by FIND by name, the connection is released when another member is connected through FIND or POINT. The system reclaims the space used when all connections for a specific member have been released.

If deleting or replacing a member, the old version of the member is still accessible by those applications connected to it. Any application connecting to the member by name (through BLDL, FIND, or OPEN) following the replace operation accesses the new version. (The replaced version cannot be accessed using a FIND by TTR or POINT unless a connection already exists for it.)

Connections established by OPEN, BLDL, FIND, and POINT are used by BSAM, QSAM, and BPAM for reading and writing member data. Connections established by DESERV are primarily used by program management. When your program or the system closes the DCB, the system drops all connections between the DCB and the data set. If you use BLDL, FIND by TTR, or POINT to connect to members, you can disconnect those members before closing the DCB by issuing STOW DISC. If you use DESERV to connect to members you can disconnect those members before closing the DCB by issuing DESERV FUNC=RELEASE.