在建立pdb指定文件位置：

FILE_NAME_CONVERT 

Oracle Managed Files

The PDB_FILE_NAME_CONVERT initialization parameter

FILE_NAME_CONVERT

The SEED FILE_NAME_CONVERT clause of the CREATE DATABASE statement specifies how to generate the names of the PDB$SEED files using the names of the CDB root files.

SEED FILE_NAME_CONVERT = ('/oracle/dbs/', '/oracle/pdbseed/')

Oracle Managed Files

When Oracle Managed Files is enabled, it can determine the names and locations of the PDB$SEED files.

DB_CREATE_FILE_DEST='/u01/app/oracle/oradata'
DB_CREATE_FILE_DEST = +data

PDB_FILE_NAME_CONVERT

The PDB_FILE_NAME_CONVERT initialization parameter can specify the names and locations of the seed's files.

To use this technique, ensure that the PDB_FILE_NAME_CONVERT initialization parameter is included in the initialization parameter file when you create the CDB.

File name patterns specified in this initialization parameter cannot match files or directories managed by Oracle Managed Files.