What is network heartbeat ? what is disk heartbeat ?
What is network heartbeat ? what is disk heartbeat ? where these information stored (Voting Disk)? where can we see the log files if there is network/disk heartbeat failure. Is there any OS packages available that need to be installed ?
Thanks in advance
voting = disk heartbeat
Network private interconnect = Heartbeat
=
logs are in CRS log directory
Similar Messages
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Network Heartbeat / Disk Heart Heat
Hi ALL,
i am new to RAC.
Can some list some MOS docs or other reading material what explains what is network heartbeat and Disk Heart beat.
What happens when n/w heartbeat fails and disk heart beat succeds and vice versaPlease check below links
http://kyuoracleblog.files.wordpress.com/2011/04/2010_paper734_yu_ppt-ppt.pdf
http://www.oracle.com/technetwork/products/clusterware/overview/interconnect-vlan-06072012-1657506.pdf
http://kyuoracleblog.files.wordpress.com/2010/02/best_practices_oracle_clusterware_session355_wp.pdf
http://www.mydbspace.com/?p=205
http://learnwithme11g.wordpress.com/2010/03/25/voting-disk-importance-in-rac-clusterware/
Also check oraclracsig site for "Understanding RAC Internals" which is very helpful
Regards
http://www.oracleracexpert.com
RMAN Debug and Trace
http://www.oracleracexpert.com/2012/11/rman-debug-and-trace.html
Time for Change: Migrate your Non-RAC Database to RAC
http://www.oracleracexpert.com/2012/10/time-for-change-migrate-your-non-rac.html -
Disk heartbeat , network heartbeat
Hi All,
Does the disk heartbeat and network heartbeat will be checked via same network (private interconnect).
Thanks,
UdayNetwork is a wide wide word.
so, if you use network also in your storage network, you need then, separate all the networks.
You will have the LAN or Public Network , where VIP, public, Scan, listener will move the traffic
you will have the private interconnect network, were priv and the interconnect traffic (between nodes)will move
And off course, you will have some form of shared storage, we can call it, storage network.
per your last comment, you ask, if you have ASM disks over san, each node will read that disk using the san network.
909574 wrote:
Let us say voting disk is on asm , where asm is in turn made of san disk , so each node should access the SAN via network rightthe answer is yes, it's how it's work.
Alvaro. -
Difference between Oracle Clusterware Network Heartbeat and Disk Heartbeat
Can soemone please explain the difference between Oracle Clusterware Network Heartbeat and Disk Heartbeat.
• If a node does not send a network heartbeat for <MissCount> (time in seconds), then node is evicted from cluster
• If disk heartbeat (voting disk) is not updated in <I/O timeout>, then node is evicted from cluster
In my openion both communcation uses network. If network is down how come disk heartbeat be updated?kamranjalal wrote:
Can soemone please explain the difference between Oracle Clusterware Network Heartbeat and Disk Heartbeat.
• If a node does not send a network heartbeat for <MissCount> (time in seconds), then node is evicted from clusterThis is the interconnect messaging miss happening between the nodes. If the nodes are going to get a delay of more than 30 seconds, the node eviction will occur.
• If disk heartbeat (voting disk) is not updated in <I/O timeout>, then node is evicted from clusterThis is for the disk only. For example, due to some reason, you are not able to access the disk, may be due to a failure in the path or access media or failure in the multipath, that would all result in the disk timeout.
Aman.... -
I installed bootcamp but became a pain to use so I unistalled it. Now every time I turn my Macbook pro on it keeps asking me what startup disk to use. I tried using the system preferences to correct this but it hasn't worked. I even restored my mac back to factory settings but it still asks me what startup disk to use. I have looked everywhere for a solution but one anywhere
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Deleting the System Preference or other .plist file
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I have a MacPro (and a MacBook). When I was having a problem with something earlier in the week I called Apple Care, and, among other things, I was instructed to click the "Repair Disk Permissions" in Disk Utility. I was surprised when the operation took almost ten minutes, and it looked like thousands of lines of stuff went scrolling by.
(BTW, I did a "Migration Assitant" from a Mac Mini when I started up this Pro; maybe that had something to do with it?)
I'm new to the MacOS, and still learning my way around the underpinnings (well, the surface of the underpinnings...) so I am not familiar with "Disk Permissions."
So, pray tell: what ARE "Disk Permissions," and what happens when I repair them? What does "Verify Disk Permissions" do?
Any sources you can steer me to, I'll be glad to follow thing links.
Thanks,
--PSVerify Disk Permissions just checks the disk permissions without fixing them. I always just use Repair Disk Permissions.
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This article explains what Repair Disk Permissions does.
http://docs.info.apple.com/article.html?artnum=25751
It is a good maintenance step to take about once every month, and after a major update or software installation. -
What is disk utility, what is used for?
What is disk utlity, & what it used for?
It is used for a variety of things, including disk repair (if the data structures that keep track of data on the disk get corrupted), repair of permissions on the system files if they get messed up, erasing and partitioning disks, etc. As Linc points out, Disk Utility's help can give you all the details. Note that some things cannot be done to the system drive unless you start up from a different drive.
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How to tell what physical disk is an ASM volume?
Hello all,
I'm trying to install some clusterware. I have attached, a SAN unit, that was previously used for ASM.
After I installed the ASM libs/drivers...I ran oracleasm scandisks, and it found all of them.
I have ASM1,ASM2....ASMn
I thought, "great"..saves me time having to go through, find each disk device and configure them. I don't mind losing data on them.
I'm in the middle of the OUI for cluster install (11Gr2 on RHEL5)...and on the ASM portion (getting ready to create a disk group for the cluster for voting disk, etc)...well, under candidate disks...it shows nothing.
If I click the all disks option..it shows all my oracle volumes...but their status is 'member'. It will not allow me to add them to my to be new disk group.
I'm not sure what to do.
One problem...is that I can't seem to find a way to find out what physical disk device is associated with each ASM disk.
For instance:
oracleasm querydisk ASM33
Disk "ASM33" is a valid ASM disk
It just shows it's a valid disk...but if I wanted to release it, reconfigure it..etc, I don't know what physical disk it is, and I'd like to use the same layout that was used before.
Is there a way to find out what disk (example: /dev/sda12) is associated with ASM33?
I don't see any options listed for this in the man page for oracleasm, and I can't seem to find much documentation for this either...
Thanks in advance,
cayenneWell for this you can use oracleasm querydisk.Using this you can identify which device as marked for asm or not. for example you can see this below example.
[oracle@localhost init.d]$ sqlplus "/as sysdba"
SQL*Plus: Release 10.2.0.4.0 - Production on Thu Jun 3 11:52:12 2010
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select path from v$asm_disk;
PATH
/dev/oracleasm/disks/VOL2
/dev/oracleasm/disks/VOL1
SQL> exit;
[oracle@localhost init.d]$ su
Password:
[root@localhost init.d]# /sbin/fdisk -l
Disk /dev/sda: 80.0 GB, 80000000000 bytes
255 heads, 63 sectors/track, 9726 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1305 10482381 83 Linux
/dev/sda2 1306 9401 65031120 83 Linux
/dev/sda3 9402 9662 2096482+ 82 Linux swap / Solaris
/dev/sda4 9663 9726 514080 5 Extended
/dev/sda5 9663 9726 514048+ 83 Linux
Disk /dev/sdb: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 4859 39029886 83 Linux
/dev/sdb2 4860 9729 39118275 83 Linux
[root@localhost init.d]# ./oracleasm querydisk /dev/sdb1
Device "/dev/sdb1" is marked an ASM disk with the label "VOL1"
[root@localhost init.d]# ./oracleasm querydisk /dev/sdb2
Device "/dev/sdb2" is marked an ASM disk with the label "VOL2"
[root@localhost init.d]# ./oracleasm querydisk /dev/sda1
Device "/dev/sda1" is not marked as an ASM disk
[root@localhost init.d]#Also in windows :
C:\Documents and Settings\comp>asmtool -list
NTFS \Device\Harddisk0\Partition1 140655M
ORCLDISKDATA1 \Device\Harddisk0\Partition2 4102M
ORCLDISKDATA2 \Device\Harddisk0\Partition3 4102M
NTFS \Device\Harddisk0\Partition4 152617M
C:\Documents and Settings\comp>answered by chinar in thread:how to identify which rawdevice Disk Is named as VOL1 IN ASM from os level -
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Adobe higher up level might monitor the forums, see my posting(s) and see my
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Premiere and Photoshop Elements and have had them on my main computer.
Still do.
I just got a laptop and earlier this spring I got a Flip HD Slide camcorder,
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forum. Posted my question and had a response in just a matter of minutes.
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contributors actually provide good, solid information, advice, and support
for each other!
I just got back from our town square, using my Flip camcorder to get some
shots of Santa arriving with his police escort to visit with some Fairfield
children before heading off on his rounds. I'm looking forward now to see
what I can put together on PE9!
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What is disk utility for?
what is the function of disk utility under application? can someone tell me how to use it?
The hatter wrote:
It is used to format drives, repair permission, and has some ability to repair disk errors, though most go with Disk Warrior.
I think thats a very brief summary of what DU can do, and I'd advise you to check the OSX Help for more DU usages. I'd write that DU can also: repair start-up disk, get info on a disk or volume, create a RAID HD array, SMART-based diagnostic for HD failure, transfer or back-up data as a disk image, burn a CD or DVD, protect info on removable media, see contents on disk image, erase and secure erase a disk/volume... etc
I don't think most Mac users head straight to DW either. I may be guessing but I reckon most simply let their Macs run and run using Leopard with no care at all for file system maintenance. Nonetheless DW is useful third-party utility for some forms of file system repair, though many only bother with it if DU or other means of OS X trouble shooting haven't sorted out the issue first.
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