You can specify the following options to control DFSMStvs access to VSAM data sets:

• VSAM record-level sharing (VSAM RLS)
• Read integrity options
• Timeout value for lock requests

If a VSAM data set is recoverable, DFSMStvs can open the data for input within a transaction. A recoverable VSAM data set is defined with the LOG(UNDO) or LOG(ALL) attribute. For more information about using recoverable VSAM data sets, see z/OS DFSMStvs Planning and Operating Guide.