Examine the command for creating pluggable database PDB2 in container database CDB2. Select three options, any one of which is required for it to execute successfully. (Choose three.)
A.
Add the FILE_NAME_CONVERT clause to the statement and set the PDB_FILE_NAME_CONVERT parameter.
B.
Add only the CREATE_FILE_DEST clause to the statement.
C.
Set only the PDB_FILE_NAME_CONVERT parameter.
D.
Set the PDB_FILE_NAME_CONVERT parameter and enable OMF.
E.
Enable only OMF.
F.
Add the FILE_NAME_CONVERT clause to the statement and enable Oracle Managed Files (OMF)
All are valid, but i think BCE is correct because you don't require the file_name_convert in option "A" just pdb_file_name_convert, don't need pdb_file_name_convert in "D" just omf, also don't require file_name_convert in option "F" just omf.
Any comment?
BCE
https://docs.oracle.com/en/database/oracle/oracle-database/18/multi/overview-of-pdb-creation.html#GUID-39D2F826-7460-4439-B410-29E16C0CA0B1
not A
PDB_FILE_NAME_CONVERT maps names of existing files to new file names when processing a CREATE PLUGGABLE DATABASE statement, as well as when processing the ENABLE PLUGGABLE DATABASE clause of the CREATE DATABASE statement, if the file_name_convert_clause is not specified and Oracle Managed Files is not enabled.
B
Enough to create OMF files
C
Looks good too
not D
Coz of using OMF not requires PDB_FILE_NAME_CONVERT
E
DB_CREATE_FILE_DEST? Thats enough to create PDB
not F
Coz of using OMF not requires FILE_NAME_CONVERT
BCE
For https://smarttechways.com/2019/03/05/ora-65016-file_name_convert-must-be-specified/
B C E are true
F is false
For https://docs.oracle.com/en/database/oracle/oracle-database/19/refrn/PDB_FILE_NAME_CONVERT.html#GUID-074F8896-D565-4139-BCDB-C81C9D741941):
A D are false
Agree with BCE
Reference:
https://docs.oracle.com/database/121/SQLRF/statements_6010.htm#SQLRF55686
You can specify FILE_NAME_CONVERT = NONE, which is the same as omitting this clause. If you omit this clause, then the database first attempts to use Oracle Managed Files to generate file names. If you are not using Oracle Managed Files, then the database uses the PDB_FILE_NAME_CONVERT initialization parameter to generate file names. If this parameter is not set, then an error occurs.
B is correct: This CREATE_FILE_DEST lets you override the default behaviour. You can enable or disable Oracle Managed Files for the PDB and you specify a different base file system directory or Oracle ASM disk group for the PDB's files.
If you specify a value other than NONE, then the database implicitly sets the DB_CREATE_FILE_DEST initialization parameter with SCOPE=SPFILE in the PDB. (https://docs.oracle.com/database/121/SQLRF/statements_6010.htm#CACFDEHC)
I think only E is right:
Version 19.6.0.0.0
SQL> show parameter CREATE_FILE
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_create_file_dest string +DATA
SQL> show parameter file_name_convert
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_file_name_convert string
log_file_name_convert string
pdb_file_name_convert string
SQL>
SQL> create pluggable database pdb3 admin user pdb3_adm identified by welcome1 roles=(connect);
Pluggable database created.
SQL>
SQL> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY YES
3 PDB1 READ WRITE YES
4 PDB2 READ WRITE YES
5 PDB3 MOUNTED
SQL>
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