Showing posts with label ASM. Show all posts
Showing posts with label ASM. Show all posts

Monday, July 7, 2014

Which ASM disk is mapped to which linux device


How to find which asm disk maps to which linux partition

[orcl@lnx01 ~]$ /etc/init.d/oracleasm querydisk -d `/etc/init.d/oracleasm listdisks -d`

Disk "ASM001" is a valid ASM disk on device /dev/dm-51[252,51]
Disk "ASM002" is a valid ASM disk on device /dev/dm-49[252,49]
Disk "ASM003" is a valid ASM disk on device /dev/dm-47[252,47]
Disk "ASM004" is a valid ASM disk on device /dev/dm-45[252,45]
Disk "ASM005" is a valid ASM disk on device /dev/dm-41[252,41]
Disk "ASM006" is a valid ASM disk on device /dev/dm-37[252,37]
Disk "ASM007" is a valid ASM disk on device /dev/dm-56[252,56]
Disk "ASM008" is a valid ASM disk on device /dev/dm-55[252,55]
Disk "ASM009" is a valid ASM disk on device /dev/dm-54[252,54]
Disk "ASM010" is a valid ASM disk on device /dev/dm-44[252,44]
Disk "ASM011" is a valid ASM disk on device /dev/dm-40[252,40]
Disk "ASM012" is a valid ASM disk on device /dev/dm-38[252,38]
Disk "ASM013" is a valid ASM disk on device /dev/dm-39[252,39]
Disk "ASM014" is a valid ASM disk on device /dev/dm-42[252,42]
Disk "ASM015" is a valid ASM disk on device /dev/dm-53[252,53]



Tuesday, February 18, 2014

How to move oracle datafile from Non ASM to ASM

How to move datafile from Non ASM (file system) to ASM

Solution: Verify the Name and location of datafile and in which tablespace the datafile resides

SQL> select tablespace_name "Tablespace",file_id "ID",file_name "File", bytes/1024/1024 "Size" from dba_data_files where TABLESPACE_NAME='TEST_TBS';

Tablespace ID File                                 Size
---------- --- -------------------------------------- ---------
TEST_TBS    8 /u01/oradata/orcl/test_tbs01.dbf         2016

Verify if you have sufficient space available on the ASM Disk Group

SQL> select name,total_mb,free_mb, state from v$asm_diskgroup;
NAME TOTAL_MB FREE_MB STATE
----- -------- ---------- ---------
DATA 101355 59017 MOUNTED


Take the tablespace offline

SQL> alter tablespace TEST_TBS offline;
Tablespace altered.


SQL> Select tablespace_name,status from dba_tablespaces where tablespace_name='TEST_TBS';

TABLESPACE_NAME STATUS
--------------- -------
TEST_TBS OFFLINE

Use the RMAN command to copy the datafile from the file system to asm disk
[oracle@linux01 ~]$ rman target /

Recovery Manager: Release 11.2.0.4.0 - Production on Tue Feb 18 06:15:45 2014

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

connected to target database: ORCL (DBID=2195477165)

RMAN> copy datafile 8 to '+DATA';

Starting backup at 18-FEB-14
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=212 instance=ORCL2 device type=DISK
channel ORA_DISK_1: starting datafile copy
input datafile file number=00008 name=/u01/oradata/orcl/test_tbs01.dbf
output file name=+DATA/orcl/datafile/test_tbs01.259.123 tag=TAG20140218T061630 RECID=1 STAMP=839831287
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:11:45
Finished backup at 18-FEB-14

RMAN> switch datafile 8 to copy;

datafile 8 switched to datafile copy "+DATA/orcl/datafile/test_tbs01.259.123"


Bring back the tablespace online

[oracle@linux01 ~]$ sqlplus sys as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue Feb 18 06:41:36 2014

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Enter password: 

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> alter tablespace TEST_TBS online;
Tablespace altered.

Check the new location of the data file and the status

SQL> Select tablespace_name,status from dba_tablespaces where tablespace_name='TEST_TBS';

TABLESPACE_NAME STATUS
--------------- -------
TEST_TBS ONLINE

SQL> select tablespace_name "Tablespace",file_id "ID",file_name "File", bytes/1024/1024 "Size" from dba_data_files where TABLESPACE_NAME='TEST_TBS';

Tablespace ID File                                 Size
---------- --- -------------------------------------- ---------
TEST_TBS    8  +DATA/orcl/datafile/test_tbs01.259.123  2016


Remove the file from the OS file system:
rm /u01/oradata/orcl/test_tbs01.dbf