File control operations

CICS® file control lets you read, update, add, and browse data in VSAM and BDAM data sets and delete data from VSAM data sets. You can also access CICS shared data tables and coupling facility data tables using file control.

CICS processing after waiting for VSAM resources

CICS file control does not organize which tasks that wait on resources (such as VSAM exclusive control of a control interval) are redispatched when the resource becomes available. When VSAM releases exclusive control of a control interval, the CICS dispatcher chooses the next task to be dispatched based on factors such as task priority and priority aging. It is not assured that tasks will be redispatched in the order in which they suspended on the resource to become available.