Rename directory on ASM

 There are 2 type of Directories in ASM

1) Directories created by DBAC or RMAN are called as “System Directory” and they cannot be renamed.

2) Directories created Manually by issuing command “alter diskgroup add directory” or creating in ASMCMD console.

To check if the directory is system created or manually created check the view V$ASM_ALIAS column SYSTEM_CREATED, directories created by system will have the value as ‘Y’

To Rename “Manually” created directories

Login to the ASM console
[grid@tstdev01 ~]$ asmcmd
ASMCMD> cd DATA
ASMCMD> ls
ASM/
DEV/  — Here to rename DEV to TEST

SQL> ALTER DISKGROUP DATA RENAME DIRECTORY ‘+DATA/DEV’ to ‘+DATA/TEST’;
Diskgroup altered.

Once done longin to ASM console and verify the same
[grid@tstdev01 ~]$ asmcmd
ASMCMD> cd DATA
ASMCMD> ls
ASM/
TEST/

To Rename System Created directories

System created directory cannot be rename, use parameter db_unique_name of database. Oracle ASM and Oracle Diagnostic Dest create your own directory structure based on parameter DB_UNIQUE_NAME.

Move Database using RMAN

RMAN> report schema;

using target database control file instead of recovery catalog
Report of database schema for database with db_unique_name DEV

List of Permanent Datafiles
===========================
File Size(MB) Tablespace RB segs Datafile Name
—- ——– ——————– ——- ————————
1 17408 SYSTEM YES +DATA/DEV/DATAFILE/system.259.941719615
2 1800 UNDOTBS1 YES +DATA/DEV/DATAFILE/undotbs1.267.941720063
3 4696 SYSAUX NO +DATA/DEV/DATAFILE/sysaux.258.941719569
4 1243 EXAMPLE NO +DATA/DEV/DATAFILE/example.266.941719731
5 118 USERS NO +DATA/DEV/DATAFILE/users.260.941719669

List of Temporary Files
=======================
File Size(MB) Tablespace Maxsize(MB) Tempfile Name
—- ——– ——————– ———– ——————–
2 1300 TEMP 1300 +DATA/DEV/TEMPFILE/temp.271.942061583

$sqlplus sys as sysdba
SQL> show parameter db_unique_name
NAME TYPE VALUE
———————————— ———– ——————————
db_unique_name string DEV

SQL> show parameter control_files

NAME TYPE VALUE
———————————— ———– ——————————
control_files string +DATA/DEV/CONTROLFILE/current.262.941719717

SQL> Alter system set DB_UNIQUE_NAME=’TEST’ scope=spfile;

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.

SQL> startup nomount
SQL> show parameter db_unique_name

NAME TYPE VALUE
———————————— ———– ——————————
db_unique_name string TEST

$rman target /
RMAN> restore controlfile from ‘+DATA/DEV/CONTROLFILE/current.262.941719717’;
Starting restore at 10-MAY-17
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=162 device type=DISK
channel ORA_DISK_1: copied control file copy
output file name=+DATA/TEST/CONTROLFILE/current.263.981519213
Finished restore at 10-MAY-17

RMAN> startup mount;
database is already started
database mounted
released channel: ORA_DISK_1

RMAN> CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 3;
new RMAN configuration parameters:

RMAN> CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 3;
new RMAN configuration parameters are successfully stored

RMAN > CONFIGURE DEVICE TYPE DISK PARALLELISM 3 BACKUP TYPE TO BACKUPSET;
new RMAN configuration parameters:

RMAN> CONFIGURE DEVICE TYPE DISK PARALLELISM 3 BACKUP TYPE TO BACKUPSET;
new RMAN configuration parameters are successfully stored

RMAN> BACKUP AS COPY DEVICE TYPE DISK DATABASE FORMAT ‘+DATA’;
Finished backup at 10-MAY-17

RMAN> SWITCH DATABASE TO COPY;
datafile 1 switched to datafile copy “+DATA/TEST/datafile/system.290.793638779”

RMAN> run {
set newname for tablespace TEMP to ‘+DATA’ ;
switch tempfile all;
}

RMAN> report schema;
Report of database schema for database with db_unique_name TEST

List of Permanent Datafiles
==================
File Size(MB) Tablespace RB segs Datafile Name
—- ——– ——————– ——- ————————
1 17408 SYSTEM YES +DATA/TEST/datafile/system.290.793638779
2 1800 UNDOTBS1 YES +DATA/TEST/datafile/sysaux.291.793638757
3 4696 SYSAUX NO +DATA/TEST/datafile/undotbs1.292.793638823
4 1243 EXAMPLE NO +DATA/TEST/datafile/example.293.793638849
5 118 USERS NO +DATA/TEST/datafile/users.294.793638849

List of Temporary Files
=======================
File Size(MB) Tablespace Maxsize(MB) Tempfile Name
—- ——– ——————– ———– ——————–
1 1300 TEMP 1300 +DATA

RMAN> startup;
database is already started
database opened

Create the new redolog files and drop the old ones.

Once the above activity is completed backup the database.

RMAN> backup database;
Starting backup at 10-MAY-17
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=162 device type=DISK
allocated channel: ORA_DISK_2
channel ORA_DISK_2: SID=194 device type=DISK
allocated channel: ORA_DISK_3
channel ORA_DISK_3: SID=210 device type=DISK
.
.
Recovery Manager complete.

Now you can remove the copy:

RMAN> delete copy;

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