Open all PDBs for a CDB in Oracle

During XStream configuration, if the Oracle database is a container database (CDB), you need to ensure that all pluggable databases (PDBs) in the CDB are in open read/write mode.

To view the open mode of PDBs, connect to the Oracle database as an administrative user and run the following statement.

select con_id, dbid, guid, name, open_mode from v$pdbs;

To open PDBs, connect to the Oracle database as an administrative user and run the following statement.

alter pluggable database all open;