RACF® supports the rebuild interface. See z/OS MVS Programming: Sysplex Services Guide for information on the rebuild interface. RACF issues message IRRX020I to indicate that a rebuild has been initiated, and issues message IRRX008I upon its completion. A rebuild can be initiated due to:

• Link failure
• Structure failure
• A SETXCF operator command
• An authorized program issuing the ?IXLREBLD START macro

If problems are encountered, one or more of the following messages are issued:

• IRRX001I
• IRRX002I
• IRRX003A
• IRRX004A
• IRRX010I
• IRRX011A
• IRRX012I
• IRRX013A

For information on these messages, see z/OS Security Server RACF Messages and Codes. If an alternate coupling facility is not available and problems such as link failures cannot be fixed readily, RVARY NODATASHARE can be used to move all systems into non–data sharing mode while the problems are fixed.