Coupling facility not available

If the coupling facility is not online or the system does not have connectivity to it, RACF® issues message IRRX003A (with accompanying return and reason codes) for each structure, and the system is initialized in read-only mode. If the problem is only connectivity, it might be specific to this system (other systems might be initialized in data sharing mode).

It is possible that the installation had no plans to use the coupling facility but, in setting up ICHRDSNT for sysplex communication, accidentally turned on the data sharing mode bit.

The operator has three choices:

If data sharing was actually intended, leave affected systems in read-only mode temporarily. Bring the coupling facility online or fix any link problems. Through ENF signaling, RACF is notified of the coupling facility's availability. Then RACF automatically reattempts connecting to structures so that it can enter data sharing mode.
If data sharing was intended, and at least one system still has connectivity to the structure, then the structure can be rebuilt into another coupling facility to which more systems have connectivity. See RACF support of the rebuild interface for more information.
Issue RVARY NODATASHARE to put the sysplex into non-data sharing mode. If the coupling facility was not wanted and the problem is simply in the ICHRDSNT bit settings, be sure to remedy this in case the system needs to be re-IPLed in the future. Otherwise, fix the coupling facility problem as previously mentioned, then issue RVARY DATASHARE; this causes RACF to reattempt connecting to structures so that the system can enter data sharing mode.