Sql> Show Con_name
Con_name
------------------------------
Cdb$root
Sql> Show PDBs
con_id con_name OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 pdb$seed READ only NO
3 PDB READ WRITE NO
4 TEST mounted
Sql> Show Con_name
Con_name
------------------------------
Cdb$root
sql> alter pluggable database test open read only;
Alter pluggable database test open Read Only
*
ERROR at line 1:
Ora-65085:cannot Open Pluggable database in read-only mode
Sql> Col Pdb_name for A20
Sql> col status for A40
Sql> select Pdb_name,status from Dba_pdbs;
Pdb_name STATUS
-------------------- ----------------------------------------
PDB NORMAL
Pdb$seed NORMAL
TEST NEW
The status of the PDB has new, NORMAL, UNPLUGGED, NEEDS UPGRADE, converting, unusable several states, the explanation of these states are as follows:
New-the PDB had never been opened since it was created. It must is opened in READ WRITE mode for Oracle to perform processing needed to complete the integration of the PDB into T He CDB and mark it NORMAL. An error would be thrown if a attempt is made to open the PDB read only.
Normal-the PDB is a ready-to-be used.
Unplugged-the PDB has been UNPLUGGED. The only operation so can be performed on it is DROP pluggable DATABASE.
NEEDS upgrade-a PDB NEEDS to is upgraded to the version of the CDB into which it is plugged.
Converting-a non-cdb were plugged into the CDB and are undergoing conversion required to make it behave like A real PDB.
Unusable-the PDB is being created or a unrecoverable error was encountered during its creation. The PDB cannot are opened while the IT state was set to unusable. If the PDB remains in this state because of a error encountered during its creation, it can is only dropped. The alert log can be checked to determine if there is an error
During PDB creation.
The above description of status states, the PDB belonging to the new will need to open first.
sql> alter pluggable database test open;
Again on the database operation open Read Only operation:
[Email protected] ~]$ sqlplus sys/[email protected]:1521/test as Sysdba
Sql*plus:release 12.1.0.2.0 Production on Tue Dec 1 09:53:23 2015
Copyright (c) 1982, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0-64bit Production
With the partitioning, OLAP, Advanced Analytics and Real application testing options
Sql> Show PDBs
con_id con_name OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
4 TEST READ WRITE NO
sql> shutdown immediate;
Pluggable Database closed.
Sql> ALTER DATABASE open read only;
Database altered.
Sql> Show PDBs
con_id con_name OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
4 TEST READ only NO
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Ora-65085:cannot Open Pluggable database in read-only mode problem resolution