In order to assist in the diagnosis of tableBASE Library integrity, two command update segments are written to Block 0 of a tableBASE library for each update made to the library. The first segment is written at the start of the update command and the second segment is written on successful completion of the update command. If a tableBASE command abends during the update of a library, the first segment will show the current command being processed and the second segment will contain information from the completion of the previous tableBASE library update.
Block 0 of the library can be viewed by running the job DK1TPRTM (TBPRNTM) which dumps library contents. DataKinetics Technical Support may request you to dump your library contents in order to assist with the diagnosis of the health of your library.