RECON cleanup (RCU) function

The RECON cleanup function (RCU) prepares the RECON data sets for recovery at a disaster recovery (DR) site in IMS Database Recovery Facility Extended Function.

RCU overview
A copy of the RECON must be made and modified to match the data sets that exist at the recovery site to perform valid recoveries. RCU will create a clean copy of the RECON data sets at a particular point in time for recovery.
Preparing for site recovery
Before a role change takes place, the databases must be restored to a predetermined time that is called the cleanup time.
Clean up time
Before preparing the RECON for site recovery, a clean up time must be determined.
Updated RECON records
The RCU function makes updates to several of the RECON records.
Special considerations for using RCU
Some conditions preclude running RCU and must be corrected before using the function. Other conditions require special consideration after RCU completes. In any case, RCU will either deliver an error message or report this information.
RCU input
Run the RCU function by issuing the RECONCOPY supporting function keyword and the RCU function keyword.
RCU usage example
The RCU function can be used to clean up a copy of the active RECON data sets to prepare them for a disaster recovery site.
RCU output
The output of the RCU function is written to the RPTRCU DD.
RCU return and reason codes
The RCU function issues these return and reason codes for the IRO0102E message.

Parent topic: Using Extended Functions