Initiating a structure rebuild

Note: VTAM® can specify a connection specific reason for starting a rebuild. This reason is displayed in MVS™ message IXC526I. See z/OS Communications Server: IP and SNA Codes for a list of VTAM connection-specific reasons for starting a rebuild.

There are several reasons why a structure rebuild might be initiated:

An MVS operator can initiate a structure rebuild
VTAM will honor the REBUILDPERCENT value coded in the CFRM policy, if there is an active SFM policy. When a SFM is active, VTAM will allow MVS to initiate the rebuild based on the REBUILDPERCENT value. If no SFM policy is active, VTAM will initiate a structure rebuild when it loses access to the structure. For more information about the REBUILDPERCENT parameter and the SFM policy, see z/OS MVS Setting Up a Sysplex. MVS can initiate a rebuild if a VTAM node loses access to the structure and the REBUILDPERCENT parameter is coded in the active CFRM policy and an SFM policy is active. For more information about the REBUILDPERCENT parameter and the SFM policy, see the z/OS MVS Setting Up a Sysplex.
A VTAM node can initiate a structure rebuild when notified that the structure has failed.