Reconnecting and Resynchronizing a Secondary Node with the Cluster
If any issues with the Incremental State Transfer (IST) occur, you can resynchronize a secondary node using State Snapshot Transfer (SST).
To reconnect a secondary node to an existing primary node and allow the secondary node to resynchronize with the cluster (force SST instead of IST):
1. Execute an autorestart only: adanuc dbid=dbid noplog options=autorestart_only
2. Remove the cluster system file: adadbm dbid=dbid remove_cluster_file
3. Remove the following files from the database directory: grastate.dat and GCACHE.dbid
4. Restart the database: adastart dbid
5. Verify the cluster status: adaopr dbid=dbid display=cluster
The primary node database snapshot (SST) is transferred to the secondary node. All nodes are now in status SYNCED.