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Questions tagged [oracle-asm]

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

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48 views

RMAN restoring datafile out of ASM

Why is RMAN restoring the datafiles out of ASM and how to restore a backup into ASM? Here is one output. The tablespace triscaltb was restored in /u01/app/oracle/product/12.1.0/dbhome_1/dbs/...
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1answer
74 views

ASMCMD doesn't return any result

I'm trying to use ASMCMD but it doesn't return any result in the command line ASMCMD> ls ASMCMD> ASMCMD> ASMCMD> ASMCMD> lsdg ASMCMD> ASMCMD> pwd ASMCMD> The version of ...
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2answers
790 views

Oracle 19c GI Install on OL7 : ASM disks stamped via AsmLib not getting discovered via GridSetup.sh

I am trying to install GI 19c on Oracle Linux 7 (required for 19c), and have used AsmLib to try to achieve device persistence (owner,group) for ASM devices/disks. Prior to that I used udev rules for ...
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1answer
55 views

Dataguard the datafiles are created in another diskgroup

I have a recently made physical dataguard configuration and everything works correctly so far, but I've noticed that the datafiles that are created in the primary are created in the standby in a ...
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4answers
114 views

Need to choose ASM performance for production database

We have a 1.5 TB of data (nonasm) and we plan to move into ASM by choose normal redundancy. Normal Redundancy ==> Two Way Mirroring , So we need 3TB data storage for 1.5TB data including mirroring(...
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1answer
458 views

ASM Space Usage

Oracle Version: 12.1.0.2 I had about 100 GB freespace on my +ASM diskgroup on Friday. When I came back on Monday, I see only 45 gigs. How can I find what consumed my space? Or is there a SQLPlus ...
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1answer
35 views

RMAN or Fresh install

I'm trying to reduce the time to install Oracle on a pipeline we have. At the moment, it's installed using dbca in silent mode with a database template file. The majority of the time seems to be ...
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1answer
363 views

ASMCA(ASM Configuration Assistant) GUI is not rendering properly

Hi Gurus, While running ASMCA utility on OEL 7.5, Oracle is not able to render the GUI of the tool. I clicked on exit button and next screen comes as a vertical line (Screen attached above).No option ...
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2answers
921 views

Empty v$asm_diskgroup with sqlplus

I have an Oracle Database instance installed under an OL7. It is a 12c2. Oracle GI also installed and my database has some files stored in ASM. I am using sqlplus to connect to the database instance ...
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0answers
96 views

RMAN corrupts passwordfile

please, can you clarify this? My configuration is RAC 12c on ASM on SLES 11 SP 4 on SystemZ. The nodes rac11 and rac12 are the server nodes of the primary database, named "primdb", uniq_name is "...
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1answer
1k views

Flash Recovery Area full

I have oracle 11g that runs on Linux serve. I have a Flash Recovery Area, I backup my archive logs to another location. presently I have very little space left in my Flash Recovery Area (FRA) thereby ...
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1answer
398 views

Mount ASM Disks To New Host

I have oracle 11.2.0.4 installed on Red Hat Linux 6. I have an RMAN full backup from database that size is 20TB . This backup is created on ASM disks with different diskgroup from DATA. I want to ...
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1answer
1k views

Oracle ASM: Freeing up space

Oracle RAC 11.2 with asm storage, all type = EXTERN redundancy. I've been cleaning up some tablespaces and shrinking datafiles back down to sizes that they're not likely to grow much larger than (...
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2answers
508 views

Recover disk in NORMAL redundancy

As we know NORMAL redundancy means 2 copies of each block. I have created diskgroup: CREATE DISKGROUP FG NORMAL REDUNDANCY FAILGROUP controller1 DISK 'ORCL:DISK3' NAME disk3 FAILGROUP ...
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1answer
1k views

Oracle asm disk string profile string vs param string

Oracle Database ASM disk string profile string vs param string ? ASMCMD [+] > dsget profile: /dev/disk* parameter: /dev/disk* Do we need to set both of them ? what is consequence of setting one ...
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1answer
2k views

How to clean Archive logs

Oralce 12c ASM How to clean Archive logs. Oracle Instance is NOT starting since Archive disk group is full, This is my TEST DB I don't want to extend the diskgroup so instead I would like to DELETE ...
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1answer
642 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 ...
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454 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 ...
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2answers
329 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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553 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 ...
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1answer
218 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 ...
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1answer
34 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 ...
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1answer
77 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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2answers
1k 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 instance ...
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1answer
207 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.d/...
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1answer
4k 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 ...
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1answer
759 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 ...
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1answer
7k 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 ...
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2answers
9k 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 ...
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3answers
6k 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: ...
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1answer
4k 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 ...
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1answer
341 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 ...
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2answers
6k 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?
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1answer
46 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 ...
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1answer
663 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 ...
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3answers
2k 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-...
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1answer
93 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 ...
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1answer
205 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/...
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1answer
719 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 ...
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1answer
9k 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 ...
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2answers
99 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) ...
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1answer
375 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 ...
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3answers
36k 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 ...
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0answers
8k 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 createdisk ...
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1answer
236 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 ...
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1answer
4k 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 ...
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2k 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 ...
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1answer
888 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 ...
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2answers
4k 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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2answers
172k 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 ...