Overview › Components and Facilities › CA MII

CA MII

CA MII protects z/OS data integrity automatically, speeds resolution of resource conflicts in shared DASD environments, and adds additional integrity at a local system level.

CA MII performs the following tasks:

• Communicates selected ENQ requests to all images in a complex, so applications on different images cannot update a data set simultaneously.
• Converts specified RESERVE requests to ENQ requests to increase resource availability.
• Notifies operators, TSO users, or both when two or more jobs require the same data set, so that the conflict can be resolved more quickly.
• Enhances initiator utilization by requeuing jobs requiring data sets that are in use and then automatically rescheduling these jobs when their data sets become available.
• Provides additional local system data set integrity protection. This includes the capability to check the attributes of a data set specified by the user against the actual attributes of the data set. Sites can specify that only authorized applications or utility programs may read or update certain data sets or classes of data sets. The product serializes the data set for all update operations by automatically issuing an ENQ request when the data set is opened for output.