IRRUT200 is a RACF® utility program that you can use to identify inconsistencies in the internal organization of each data set comprising a RACF database and to make an exact copy of a RACF data set. You can also use it to monitor the usable space in a data set. It can perform the following functions:

• Validate and report errors found in the relative byte addresses (RBAs) of each segment of all profiles.
• Validate that index entries point to the correct profile.
• Validate the data set format.
• Issue return codes to signal validation errors.
• Scan the index blocks and print information about problems with the index-block chains.
• Compare the segments of the data set that are actually in use to the segments allocated according to the BAM blocks, and print information about inconsistencies.
• Process the alias index to detect errors and display index blocks.
• Create an encoded map for each BAM block in the RACF data set, which can be used to determine the amount of space left in the data set and how fragmented that space is. You can use this information to decide if the data set needs to be enlarged, or if it needs to be rebuilt in order to undo the fragmentation that has occurred over time.
• Create a backup copy of a RACF data set. You can use this function if the backup data set has become out of synchronization with the primary data set.
• Create an enhanced, formatted index report displaying the 255-byte profile name and profile type information.