Move Oracle controlfile from filesystem to ASM

December 17, 2022 Leave a comment

1. Find out controlfile locations:

Please note another copy of controlfile is already on ASM, +FRA diskgroup. We are moving the first one. 

SQL> show parameter control_files

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
control_files			     string	 /u01/app/oracle/oradata/PRSH01
						 /control01.ctl, +FRA/PRSH01/co
						 ntrol02.ctl

2. Place database into nomount mode using RMAN and copy controlfile to new location:

$ rman target /

RMAN> startup nomount;
RMAN> restore controlfile to '+DATA' from '/u01/app/oracle/oradata/PRSH01/control01.ctl';

3. Note the name assigned to the controlfile:

[grid@prsh01 ~]$ asmcmd find --type CONTROLFILE +data *
+data/PRSH01/CONTROLFILE/current.261.1122675497

4. Modify the parameter from sqlplus:

SQL> alter system set control_files='+data/PRSH01/CONTROLFILE/current.261.1122675497','+FRA/PRSH01/control02.ctl' scope=spfile;

5. Restart database

SQL> shutdown immediate;
SQL> startup

6. Double check new location 

SQL> show parameter control_files

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
control_files			     string	 +DATA/PRSH01/CONTROLFILE/curre
						 nt.261.1122675497, +FRA/PRSH01
						 /control02.ctl
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Move Oracle datafiles from filesystem to ASM using RMAN

December 5, 2022 Leave a comment

1. Connect to the database using RMAN and move database into mount mode:

$ rman target /
RMAN> shutdown immediate
RMAN> startup mount

2. Get information about target datafiles and tempfiles:

RMAN> report schema;

using target database control file instead of recovery catalog
Report of database schema for database with db_unique_name PRSH01

List of Permanent Datafiles
===========================
File Size(MB) Tablespace           RB segs Datafile Name
---- -------- -------------------- ------- ------------------------
1    1020     SYSTEM               YES     /u01/app/oracle/oradata/PRSH01/system01.dbf
3    490      SYSAUX               NO      /u01/app/oracle/oradata/PRSH01/sysaux01.dbf
4    850      UNDOTBS1             YES     /u01/app/oracle/oradata/PRSH01/undotbs01.dbf
7    5        USERS                NO      /u01/app/oracle/oradata/PRSH01/users01.dbf

List of Temporary Files
=======================
File Size(MB) Tablespace           Maxsize(MB) Tempfile Name
---- -------- -------------------- ----------- --------------------
1    114      TEMP                 32767       /u01/app/oracle/oradata/PRSH01/temp01.dbf

3. Copy datafiles from filesystem to ASM diskgroup, in our case to +DATA:

RMAN> copy datafile 1 to '+DATA';
RMAN> copy datafile 3 to '+DATA';
RMAN> copy datafile 4 to '+DATA';
RMAN> copy datafile 7 to '+DATA';
RMAN> switch datafile 1 to copy;
RMAN> switch datafile 3 to copy;
RMAN> switch datafile 4 to copy;
RMAN> switch datafile 7 to copy;

4. Place tempfile on +DATA:

RMAN> run{
2> set newname for tempfile 1 to '+DATA';
3> switch tempfile 1;
4> }

executing command: SET NEWNAME
renamed tempfile 1 to +DATA in control file

5. Double check that all files have a new name

RMAN> report schema;

Report of database schema for database with db_unique_name PRSH01

List of Permanent Datafiles
===========================
File Size(MB) Tablespace           RB segs Datafile Name
---- -------- -------------------- ------- ------------------------
1    1020     SYSTEM               ***     +DATA/PRSH01/DATAFILE/system.256.1122674191
3    570      SYSAUX               ***     +DATA/PRSH01/DATAFILE/sysaux.257.1122674225
4    910      UNDOTBS1             ***     +DATA/PRSH01/DATAFILE/undotbs1.258.1122674235
7    5        USERS                ***     +DATA/PRSH01/DATAFILE/users.259.1122674253

List of Temporary Files
=======================
File Size(MB) Tablespace           Maxsize(MB) Tempfile Name
---- -------- -------------------- ----------- --------------------
1    114      TEMP                 32767       +DATA

6. Open database:

RMAN> alter database open;

7. Check new file names. Note tempfile name will also be generated:

RMAN> report schema;

Report of database schema for database with db_unique_name PRSH01

List of Permanent Datafiles
===========================
File Size(MB) Tablespace           RB segs Datafile Name
---- -------- -------------------- ------- ------------------------
1    1020     SYSTEM               YES     +DATA/PRSH01/DATAFILE/system.256.1122674191
3    570      SYSAUX               NO      +DATA/PRSH01/DATAFILE/sysaux.257.1122674225
4    910      UNDOTBS1             YES     +DATA/PRSH01/DATAFILE/undotbs1.258.1122674235
7    5        USERS                NO      +DATA/PRSH01/DATAFILE/users.259.1122674253

List of Temporary Files
=======================
File Size(MB) Tablespace           Maxsize(MB) Tempfile Name
---- -------- -------------------- ----------- --------------------
1    114      TEMP                 32767       +DATA/PRSH01/TEMPFILE/temp.260.1122674673

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srvctl start filesystem hangs

August 6, 2020 1 Comment

The title of this post is general, there can be a lot of reasons why srvctl start filesystem hangs. The aim of this blog post is to share one of the reasons only.

Problem:

I’ve created ACFS volume and added it to srvctl:

$ asmcmd volcreate -G OGG -s 10G ACFSGG
# srvctl add filesystem -device /dev/asm/acfsgg-11 -path /GG_HOME -volume acfsgg -diskgroup OGG -user oracle -fstype ACFS

then tried to start the filesystem using:

# srvctl start filesystem -device /dev/asm/acfsgg-11

Which hanged.

Troubleshooting:

I’ve checked logs under trace folder under GI base, but could not find any clue. Even worse, stopping filesystem was also hanging.

But let’s stop here, the file that should have been checked was really there, but I missed it and checked wrong files. The file name that shows the necessary error is mount_<process id>.trc and is definitely located under trace folder. So instead of manually mounting filesystem to see the error, you can just open that mount_<process id>.trc and you will see the reason there.

Then I tried manual mounting of the filesystem, without srvctl:

[root@stbyrac1 trace]# /bin/mount -t acfs  /dev/asm/acfsgg-11 /GG_HOME
mount.acfs: ACFS-03037: not an ACFS file system

saw the error, which explained what was happening. My volume was not formatted with acfs filesystem. Somehow I missed that step on the standby cluster, so just a human error, but srvctl at least should have said that instead of hanging and placing info in trace file.

Solution:

Format ACFS volume:

[root@stbyrac1 trace]# mkfs -t acfs /dev/asm/acfsgg-11
mkfs.acfs: version                   = 19.0.0.0.0
mkfs.acfs: on-disk version           = 46.0
mkfs.acfs: volume                    = /dev/asm/acfsgg-11
mkfs.acfs: volume size               = 10737418240  (  10.00 GB )
mkfs.acfs: Format complete.

Because the start and stop operations are hanged, you need to mount filesystem on all database nodes manually:

[root@stbyrac1 ~]# /bin/mount -t acfs  /dev/asm/acfsgg-11 /GG_HOME
[root@stbyrac1 ~]# /bin/mount -t acfs  /dev/asm/acfsgg-11 /GG_HOME

Now try to stop and start filesystem, to make sure srvctl is able to do it’s job without any manual interaction:

[root@stbyrac1 ~]# srvctl stop filesystem -device /dev/asm/acfsgg-11
[root@stbyrac1 ~]# srvctl start filesystem -device /dev/asm/acfsgg-11

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