In this blog post series, we are looking at noteworthy enhancements to the Oracle Multitenant option of the Oracle Database in 12.1.0.2. In the previous post, we looked at the save|discard state clause.
Another new feature in DB 12.1.0.2 is that you can specify the CREATE_FILE_DEST clause for the PDB itself, in any CREATE PLUGGABLE DATABASE statement . This can be either an Oracle Managed Files (OMF) file system directory or Oracle ASM disk group that will be used for the PDB data files.
CREATE PLUGGABLE DATABASE salespdb2 … CREATE_FILE_DEST = '/u02/oradata/salespdb2/';
The default location you specify for the data files of the PDB using the CREATE_FILE_DEST clause, can be totally independent of any OMF default location specified in the root of the CDB via the DB_CREATE_FILE_DEST initialization parameter.
In effect, this will allow faster unplugging or plugging of PDBs by administrators across containers in a shared environment. The nocopy clause can be used to plug in the unplugged PDBs in such a case.
See the documentation for more information on the CREATE_FILE_DEST clause here. Also see the section “File Location of the New PDB” here that explains the precedence order when this clause is used along with the FILE_NAME_CONVERT clause, the DB_CREATE_FILE_DEST initialization parameter set in the root, and the PDB_FILE_NAME_CONVERT initialization parameter.