Hi Kamus, you may want to have a general look at the CDB_ views, for example CDB_PDBS and others. They are usually same as DBA_ views, but extended with a CON_ID identifying the pluggable DB. Regards Martin Kamus schrieb: > 2. Is there a view that showed all the databases (including CDB and all the > PDBs) information? like V$DATABASES for all the databases. > > 3. When will the ORA-24543 should occurred? Yesterday I tried to using > "startup" to open the PDB, I got ORA-24543 error. > > SQL> startup ORA-24543: instance startup OR shutdown NOT allowed IN pluggable > DATABASE > > Today I tried again, it worked. What I modified is enable the multi-threaded > database mode by setting threaded_execution=TRUE. Does it related? > > SQL> SHOW USER USER IS "SYS" SQL> startup Pluggable DATABASE opened. SQL> > SQL> SHOW con_name CON_NAME ------------------------------ PDBTEST -- Usn's IT Blog for Oracle and Linux http://www.usn-it.de -- //www.freelists.org/webpage/oracle-l