Oracle ASM is a storage management solution for Oracle databases and clusters providing volume management and a filesystem,

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5
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1answer
705 views

ASM diskgroup drop from another ASM instance

I have created long time back one ASM RAC setup and I created one diskgroup with some name say xyz. I think that instance is gone but the diskgroup was not dropped exclusively using command: drop ...
5
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1answer
1k views

How do I have Oracle ASM scan for and repair uncorrectable ECC errors (bad sectors)?

I'm running Oracle ASM (11gR2) with normal redundancy on SATA disks (WD Raptors). This is on a physical standby database, if it matters. Occasionally, disk sectors develop read errors (ECC failures). ...
5
votes
1answer
177 views

Oracle ASM vs RAID 10

I have oracle ASM 11gR2 on oracle linux 5.8 and i want to install oracle database. I have some disks and i want to use the redundancy strategies of oracle ASM or RAID 10 . I do not know which one is ...
4
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1answer
58k views

How to monitor space usage on ASM diskgroups

Last night the recovery area on one of our Oracle Database Appliances went full. This was reported in one of the database alert logs, and we were able to clear out some space before the next log ...
4
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2answers
2k views

How many control files should I have?

On the Oracle Database Appliance, the default deployment only gives you a single control file. I find this a little puzzling. The single control file causes a policy violation in the automatically ...
3
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2answers
15k views

Add additional disks to FRA diskgroup in ASM

We're running Oracle 11.2.0.3 with a two node RAC and our FRA diskgroup is running low on space. I need to allocate some more disks to it through ASM. I'm not sure how to go about doing this. I can ...
2
votes
1answer
2k views

du of directories in a diskgroup in Oracle ASM

In Linux, you could run the below on a directory to find the size of each sub-directory: du -sh * When you're in asmcmdin the +FRA disk group for example, how can I retrieve the size of each ...
2
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1answer
266 views

Unable to turn off automatic memory management (AMM)

i am running oracle 11.2.0.4 SE RAC on Red Hat linux 6, the database is using ASM for datafile management i have been experimenting with turning on AMM and set the following parameters alter system ...
1
vote
3answers
23k views

Shutdown one node in RAC

I want to shutdown one node in RAC. I did the following steps: Shutdown database instance export ORACLE_SID=mydb1 sqlplus / as sysdba shutdown immediate; shutdown ASM instance . oraenv +ASM1 ...
1
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1answer
552 views

Migrating a tablespace to a different database on the same ASM

How might one go about copying or moving tablespaces between databases that uses the same ASM instances? Might it be possible to cut some corners in RMAN or have ASM remap files belonging to a ...
1
vote
1answer
19 views

Map ASM files to physical Linux Devices

We are having problems with log file sync waits periodically. We have a 2 node RAC cluster using ASM. I'd like to monitor the physical device(s) containing the REDO log files using iostat, but I'm ...
1
vote
1answer
73 views

Is there any trick to Resize LVM online that raw by UDEV rule without filesystem?

Here is the Logic Volume for example: lvcreate -L2G -n Lv_OraD1 vg_db lvcreate -L180G -n Lv_OraD2 vg_db lvdisplay /dev/mapper/Lv_OraD* UDEV rule to raw the LV: vi /etc/udev/rules....
1
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2answers
1k views

Problem Installing 11.2.0 on RHEL 7 64 Bit

I have problem in stalling Oracle ASM on RHEL 7, Please advice [root@localhost grid]# ./root.sh Performing root user operation for Oracle 11g The following environment variables are set as: ...
1
vote
1answer
805 views

ASM 12c compatibility

Can I use ASM 12c version with database 11g? This link and MOS Doc ID 337737.1 says I cannot use 12c version of ASM with a lower database version. Am I right? Or is it otherwise?
1
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1answer
22 views

Migration query - Oracle

I have two physical servers, hosting 6 two node RAC databases running in 11.2.0.3 version (both grid and database). I'm told to have the grid software in 11.2.0.4 version and the databases in the ...
1
vote
1answer
34 views

ASM and IPv6 Compatibility

In the whitepaper mentioned below, Under 'Limitations' it says ASM and fan based notifications are not supported by IPv6 in Oracle. I'm just curious what ASM has to do with ipv4 or ipv6 or ipv4? ASM ...
0
votes
2answers
68 views

Reinstall Oracle 11G2

Running Oracle 11GR2 instance (non-ASM). Plan to set it up again from the scratch(this time using ASM, Grid infrastructure). And I need the present database. I am thinking of the simple plan: 1) ...
0
votes
1answer
2k views

determine redo log size, number of redo log files

Having 2 node RAC instance using ASM Log switches happening are too high about 100 per hour causing db to hang for few minutes sometimes GROUP# THREAD# MEMBER ...
0
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1answer
58 views

Mirror copies of redo logs

I'm running an two node RAC database with ASM having two DGs one for data and one for redo. I have only one copy of redo and I have the need to have another copy of redo logs. 1. How to go ahead with ...
0
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3answers
292 views

Is using ASM a pre-requisite for RAC?

I am about to build our first RAC development environment, and as I'm new to RAC and have not used ASM I wanted to keep things as simple as possible. I was under the impression that ASM is a pre-...
0
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1answer
215 views

Kerne module for Oracle 11gR2 RAC on Linux

As per Oracle, it requires three Linux packages to run ASMLib: oracleasm - kernel module oracleasmlib-2.0 - ASMLib libraries oracleasm-support-2.0 - Admin for ASMLib This library versions are OS ...
0
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1answer
1k views

How to migrate old Oracle ASM disks

We have EMC CLARiiON disks that are near their end of support, so we need to move Oracle ASM disks to a new sets disks. We are trying to minimize the database down time, so I am trying to find ways ...
0
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2answers
55 views

Oracle ASM : Alter asm_diskstring when ASM Instance is Down,

I am beginner for Oracle ASM I know we can alter asm_diskstring with following ways SqlPlus ASMCA but these requires +ASM to be UP and running. Is there way to set asm_diskstring when +ASM ...
0
votes
1answer
247 views

Cannot startup Oracle due to ORA-15041

I'm troubleshooting an Oracle instance that won't startup due to ORA-15041. The trc file shows this error: Failed to create file '+FRA_DATA' (file not accessible?) ORA-19816: WARNING: Files may ...
0
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1answer
98 views

How is the password file accessed when it's on an ASM diskgroup and required to connect to ASM?

When a RAC is turned on, it will try to accessing the OCR registry which is located on ASM. ASM also holds the asm password file. However to open ASM, it needs to access the password file. If the ...
0
votes
1answer
481 views

Non-RAC single instance with ASM startup query

How to start a non-rac single instance with ASM file system. As in the case of RAC after reboot of server, the ASM and CRS resources startup automatically.. but with non-RAC but with ASM storage, what ...
0
votes
1answer
795 views

oracle cannot start

I have oracle database 11.2.0.4 on oracle linux 6.7 . I have install oracle database single instance with asm option . I have 2 users : oracle and grid My database is open and all of things are ...
0
votes
2answers
2k views

How restore from ASM to a new server?

We have a machine that crashed completely. The ASM disks are fine. Is it possible to mount the old ASM disks to a new machine and then restore the datafiles/redo files/ control files/everything to ...
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0answers
27 views

Dropping database in RAC

I need a drop a database which is a 2 node RAC configuration and I will also be drooping the disk groups as well completely. What is the right way to drop the database + diskgroups? Will it be ok to ...
0
votes
2answers
41 views

ASM Diskgroup Creation Issue

I have 6, two node RAC databases running in the two physical servers. While I try to create new diskgroup, I get the following error: ORA-15018: diskgroup cannot be created ORA-04031: unable to ...
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0answers
44 views

ASM Query on Diskgroups

Platform - RHEL. Database - 11.2.0.3. I have a diskgroup name TEST with AU as 1. I need to have the diskgroup with AU as 4 therefore I decided to drop the existing DG and recreate the new one with ...
0
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1answer
42 views

ASM Query - Oracle 11gR2

I have two node RAC servers hosting 4 databases running on 11.2.0.3 version in RHEL OS. The underlying LUNs assigned to the ASM is not currently multipathed, meaning the disk sequence would change ...
0
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1answer
21 views

Query on Asmlib

I have Oracle Linux running on vmware hosting an Oracle database with ASM (single instance). There isn't any operating system device persistence and therefore whenever my OS reboots, the disk number ...
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0answers
167 views

How to backup and restore asm password file stored on ASM if ASM isn't available?

Oracle recommends backing up the ASM password file using pwcopy in ASMCMD. This would only copy it to another diksgroup. source : Backing Up and Restoring an Oracle ASM Password File in a Disk Group ...
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0answers
71 views

Email Alerting for Oracle ASM disk group storage

I'm aware of how to view ASM disk group usage through asmcmd and other methods. Is there any way to receive an alert via email through a script that I could just throw into a cronjob when a disk ...
0
votes
1answer
49 views

Backup files not found in ASM

I have an Oracle database 11gr2 and I have installed Oracle Grid on Oracle Linux 5.9. I have two disk groups. /etc/init.d/oracleasm listdisks : flash_recovery_area DATA The first disk group is ...
0
votes
1answer
98 views

Cannot install Oracle Grid on Oracle Linux 6.4

I have an Oracle database 11gr2 and I want to install Oracle Grid on Oracle Linux 6.4. At first, I have installed Oracle Grid with the tutorial on this website: https://eudba.wordpress.com/2012/08/...
0
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1answer
189 views

ASM File System type

What is the underlying file system in ASM if exists? I have gone through many sites but neither of them answers my question directly rather each site I visisted raises a different point like 'ASM uses ...
0
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1answer
198 views

Striping IO with datafiles on different physical mounts

I have a server with three directly attached disk controllers. Each of these can provide internal redundancy and IO-striping accross disks, but I'm wondering what is the best way to configure the ...
0
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0answers
5k views

ASM drop disk hangs (STATE DROPPING)

I have added disk into the RAC system by the following way: I have disk /dev/sdh1. Marked it as an ASM disk: --On node 1 oracleasm createdisk DISK7 '/dev/sdh1'; --On node 2 oracleasm ...
0
votes
2answers
15k views

Oracleasm deletedisk failed Unable to clear disk

I have dropped the disk from ASM diskgroup: > ALTER DISKGROUP DATA01 DROP DISK DISK1; Oracle did a rebalance operation and then dropped the disk. Now, I want to delete the disk from ASM library ...