EXAMINE is an access method services command that lets users analyze and collect information on the structural consistency of key-sequenced data set clusters. This service aid consists of two tests: INDEXTEST and DATATEST.

INDEXTEST examines the index component of the key-sequenced data set cluster by cross-checking vertical and horizontal pointers contained within the index control intervals, and by performing analysis of the index information. It is the default test of EXAMINE.

DATATEST evaluates the data component of the key-sequenced data set cluster by sequentially reading all data control intervals, including free space control intervals. Tests are then carried out to ensure record and control interval integrity, free space conditions, spanned record update capacity, and the integrity of internal VSAM pointers contained within the control interval.

For a description of the EXAMINE command syntax, see z/OS DFSMS Access Method Services Commands.