ORA-05190
Operation is not allowed when the shard pluggable database (PDB) is open in more than one Oracle Real Application Clusters (Oracle RAC) instance.
Cause
An unsupported operation is being attempted on a Sharding Native Replication-enabled PDB while it is open in more than one Oracle RAC instance.
Action
Ensure that the shard PDB is open in only one Oracle RAC instance.