Can AMS disks be in different Partition for a database

Hello All,
I have 2 datababase on the server. I save all the datafile on MDMDISK1 for MDM database and on DWHDISK1 for DWH database.
Can I add /dev/sdd5, /dev/sdd6, /dev/sdd7 to DWHDG1 disk group to give more space to DWH database.
Disk Partition Table Configuration
Disk Name     Size GB     ASM Disk Disk group
/dev/sdd (LUN)     107
/dev/sdd1     7     CRSDISK1
/dev/sdd2     7     CRSDISK2
/dev/sdd3     7     CRSDISK3
/dev/sdd4     8
/dev/sdd5     24
/dev/sdd6     24
/dev/sdd7     24
/dev/sde (LUN)     107
/dev/sde1     24     MDMDISK1 +MDMDG1
/dev/sde2     24     MDMDISK2
/dev/sde3     24     MDMDISK3
/dev/sde4     24     MDMDISK4
/dev/sdf (LUN)     107
/dev/sdf1     24     DWHDISK1 +DWHDG1
/dev/sdf2     24     DWHDISK2
/dev/sdf3     24     DWHDISK3
/dev/sdf4     24     DWHDISK4

user5846399 wrote:
but I wanted some assurance with experience people like you'll that disk on differnet LUNS will not hamper the performance.A LUN is a logical unit - it can consist of a single physical drive. It can consists of 20 physical drives. So the LUN itself does not determine performance. Performance is determined by the moving parts underneath it.
Using multiple LUNs for the same diskgroup or file system volume is a common practice. Whether that would be a problem (performance or otherwise) depends on the stuff underneath the LUN.
For example one LUN could be RAID5 and another LUN can be RAID0+1. Mixing different RAID levels is not really a good idea.
One LUN can be storage on a SAN and accessed via fibre channel. Another LUN could be an iScsi device accessed via IP. Mixing very different storage architecture and storage protocols are not a good idea.
One LUN can be RAID0, running via dual fibre channels connected to a switch, for storage from storage server 1. Another LUN can also be RAID0 and accessed via the very same fibre channels and switch, but from storage server 2. In which case the RAID levels are the same and the storage protocol and infrastructure the same - and this will not only make a compatible mix, but can in fact increase redundancy if you use these as ASM mirror disks (meaning that ASM can loose either storage server 1 or 2 and still work).

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[SOLVED] Just got my Arch! Can /home be moved to different partition?

Hello everybody, after three days of work I've finally got my Arch running correctly, and I'm very thrilled about moving on and use it on a regular basis.
Now I have a doubt: during installation I selected to install home in the same partition as file sistem, because I have a home partition for Ubuntu and Fedora and was unsure if setting it would simply create a new folder for Arch, or it would be automatically formatted, which would have meant the destuction of all my data. That means all Arch data is inside the same partition.
So, question is, is there any way to move to that home partition now?
Last edited by Daerun (2011-02-08 22:33:24)

I don't know how many times I have seen this problem - and the solution is oh so easy ...
Forget about /home as such - make it just part of the root filesystem and don't put any data in there.
Instead - mount /myhome (or whatever you want to call it) on a partition on its own and have all of your users (ie all the usernames you use) rwx-access to it - use it as your 'real' home.
This way, you don't have the clutter of dot-files/directories if you should have more than one distro. To use a common /home for more than one distro is a big fallacy (at least in _my_ eyes) unless you make sure that uid and gid is the same (which is seldom the case if you're a newbie - old hands know better!)
Even if you have the same uid/gid - the dot-files may not be completely compatible and you're heading for troubles.
Another advantage - you can replace a distro with some other distro without thinking twice about it - your 'real' home is safe.
Oh - and while I'm at it.
Why all the different partitions for each distro? (/var, /usr, /home etc). That is OK if you only use one distro - the second you try to install another one you will be heading for troubles.
Just use the root filesystem and give it 20 gigs - 20 gigs for each distro and you will not have any problems - ever (almost). Hey - in these days of terabyte disks for $50, what's the problem?
Then - a final /myhome as a common home partition for all distros.
Another 'mistake' I often see is playing around with different filesystems, trying to wring the last ounce of effort out of a poor diskdrive. Make a /testing partition and experiment to your heart's content with all kind of weird and wonderful filesystem, but keep the root filesystem and your /myhome safe. ext3 and/or reiserfs are excellent filesystems and have been so for years - they are as safe as the bank. ext4 is getting there.
Just my 2c worth ...
Last edited by perbh (2011-02-08 17:38:51)

Can one itunes support 10 different iphones for backup

Can one itunes support 10 different iphones for backup on a windows pc.

If you are going to sync multiple phones to iTunes in the same user account, you want to be careful if you are going to sync contacts with Address Book (Windows Address Book/Contacts folder if you are using Windows) under the "Info" tab in iTunes . What can happen is the syncing process will take the contacts from both phones and then merge them together. This will cause both phones to have all of the contacts from each phone and it can be a hard thing to recover from when it happens. Best advice is to create two seperate user accounts on the computer and sync each phone to its own unique user account. This way you get a seperate Address Book (or Windows Address Book/Contacts folder in Windows) for each phone.
Hope this helps,
- Greg

How to configure different listener for each database in 11gR2 RAC

Hi Friends,
Current Prod Setup :
11gR2 (11.2..0.2) RAC on RHEL 5.5 with 3 SCAN Listeners on default 1521 port.
Having 4 databases which are using SCAN-IP and listening on default port only.
As per policy, we have to create separate listeners (on different port) for each database.
like,
DB1 - 1522
DB2 - 1523
DB3 - 1524
DB4 - 1525
Even If I configure 4 listeners using NETCA, how my failover & load balancing will happen using SCAN & Newly Created Listeners ???
Thanks in advance..
Regards,
Manish

Hi,
I tried on 11gR2 TEST RAC Server to have different listener with different port (1529) for SCAN & Node Listener & tested failover, load-balancing which was successful.
[oracle@ravish5 admin]$ cat listener.ora
LISTENER_A=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_A)))) # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_A=ON # line added by Agent
[oracle@ravish5 admin]$ ps -ef | grep lsnr
oracle 1985 1 0 00:46 ? 00:00:00 /11g_crs/11.2.0.2/product/home/bin/tnslsnr LISTENER -inherit
oracle 1988 1 0 00:46 ? 00:00:00 /11g_database/11.2.0.2/product/home_1/bin/tnslsnr LISTENER_A -inherit
oracle 2928 1 0 01:00 ? 00:00:00 /11g_crs/11.2.0.2/product/home/bin/tnslsnr LISTENER_SCAN1 -inherit
[oracle@ravish5 admin]$ lsnrctl status LISTENER_A
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 02-MAY-2012 03:19:35
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_A)))
STATUS of the LISTENER
Alias LISTENER_A
Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date 02-MAY-2012 00:46:42
Uptime 0 days 2 hr. 32 min. 54 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /11g_database/11.2.0.2/product/home_1/network/admin/listener.ora
Listener Log File /11g_database/11.2.0.2/diag/tnslsnr/ravish5/listener_a/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_A)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.3.5)(PORT=1529)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.3.16)(PORT=1529)))
Services Summary...
Service "TEST" has 1 instance(s).
Instance "TEST2", status READY, has 1 handler(s) for this service...
Service "TESTXDB" has 1 instance(s).
Instance "TEST2", status READY, has 1 handler(s) for this service...
Service "srvc_test.clover.com" has 1 instance(s).
Instance "TEST2", status READY, has 1 handler(s) for this service...
The command completed successfully
SQL> show parameter listen
NAME TYPE VALUE
listener_networks string
local_listener string (DESCRIPTION=(ADDRESS_LIST=(AD
DRESS=(PROTOCOL=TCP)(HOST=192.
168.3.16)(PORT=1529))))
remote_listener string ravish-scan:1529
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
[oracle@ravish5 admin]$ srvctl config scan_listener
SCAN Listener LISTENER_SCAN1 exists. Port: TCP:1521,1529
[oracle@ravish5 admin]$ srvctl config scan
SCAN name: ravish-scan, Network: 1/192.168.3.0/255.255.255.0/eth0
SCAN VIP name: scan1, IP: /ravish-scan.clover.com/192.168.3.22
[oracle@ravish5 admin]$ srvctl config listener
Name: LISTENER
Network: 1, Owner: oracle
Home: <CRS home>
End points: TCP:1521
Name: LISTENER_A
Network: 1, Owner: oracle
Home: /11g_database/11.2.0.2/product/home_1
End points: TCP:1529
[oracle@ravish5 admin]$ srvctl config service -d TEST -s srvc_test.clover.com
Service name: srvc_test.clover.com
Service is enabled
Server pool: TEST_srvc_test.clover.com
Cardinality: 2
Disconnect: false
Service role: PRIMARY
Management policy: AUTOMATIC
DTP transaction: false
AQ HA notifications: true
Failover type: SELECT
Failover method: BASIC
TAF failover retries: 0
TAF failover delay: 0
Connection Load Balancing Goal: LONG
Runtime Load Balancing Goal: NONE
TAF policy specification: BASIC
Edition:
Preferred instances: TEST1,TEST2
Available instances:
TEST_NEW =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = ravish-scan.clover.com)(PORT = 1529))
(LOAD_BALANCE = yes)
(FAILOVER = ON)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = srvc_test.clover.com)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
Actually different ports for different databases are required to have separation of duties. Once Firewall enabled betwen Client & DB Server only privileged users would have access to particular database.
Regards,
Manish

Can i set up my drive as encrypted with different partitions for different versions of osx?

i have some questions about setting up an encrypted drive with different versions of osx installed on separate partitions, and how this choice effects time-machine and the emergency recovery disk.
I have a new/refurbished macbook pro with a SSD. it already has mavericks installed. i want to fully wipe the drive and reinstall everything my self because I'm odd like that.
first wiping the current drive
Does the recovery partition get wiped if i use disk-utility to reformat the drive. Even thought the recovery partition does not show up as a partition, when i look at it with disk-utility? i would like to know I've wiped all partitions so that no little bugger gets left with out me knowing. Disk-utility does not show the recovery partition and this makes me concerned it might not wipe it.
Does mavericks automatically make a recovery partition during the installation process? Or do i need to make a new 1gb partition for the recovery disk?
Can i have two different partitions on my drive with separate installations of OSX on it? (one for work that i don't update the system os till my current project is done, and the other for experimenting with new software.)
will time machine back up both of the partitions or just one?
can i accomplish all this from a bootable usb drive or do i need to do this in target disk mode?
do i need to use a more capable utility than the stock apple "disk-utility"?
when reformatting the drive should i format it as encrypted or let file vault do this after i install mavericks?
how much does encryption slow down performance for things like photo/video/music production?

Do a backup before you do anything.
Does the recovery partition get wiped if i use disk-utility to reformat the drive
It shouldn't
Does mavericks automatically make a recovery partition during the installation process?
Yes.
Can i have two different partitions on my drive with separate installations of OSX on it?
Yes.
will time machine back up both of the partitions or just one?
It will as long as one partition is not excluded in the Time Machine/Options.
do i need to use a more capable utility than the stock apple "disk-utility"?
No, just boot into the Recovery Volume (command - R on a restart).
file vault do this after i install mavericks?
I would let File Vault do that.

I am setting up a time machine backup to a external Hard drive. I want to backup by Mac book Pro running OSX 10.8.5. I would like to Partition the disk and use one partition for Time machine backups and the other for my Lightroom backups. How to do this?

I want to create a two partition disk. One partition for time machine, the other for Lightroom backup. Currently Time Machine is using the entire drive and it is doing the intial encryption and is about 29% complete after two days. I've decided that I want to turn encryption off and partition the disk. So I do I start over?

With the external drive attached, open Finder>Applications>Utilities>Disk Utility. Select the external drive from the list in the left side panel of the DU window. In the main window panel, click Partition in the buttons top center of that panel.
Select the number of partitions you want and adjust their sizes.
For the first partition, click to highlight the partition, then select the format, Mac OS Extended (Journaled) and then the partition table as GUID [both of those are the defaults]. Click Apply and it will ask to confirm and erase and format that partion...oh, give the partition a name, like Backup.
Then repeat those steps for the second partition..and remember to name it...something like Lightroom.
Close Disk Utilitty and you are ready to send TM to the one partition, and do your backup of Lightroom to the second partition.

Can i create more than one instance for single database?

HI
anybody can tell me how to create more than one instance for single database(without using RAC)?
thanks
Kalanidhi

Anandji,
I sometimes think differently. I also think like what this person is asking..(although I have installed and administering 5 different RAC databases)
The main doubt of mine is that we create multiple instances accessing the same storage area.
Anyway the controlfiles of all instances will have the same information except the instance_names and instance id's.
Hence I always think , why can't it be possible to to create another instance in the same system and point it to a controlfile which is copied from the other instance.
Why can't the same files be shared between the two instances in a same system ?
I know I am thinking a little bit confusing...
Anyway I need to test that also...
Mahesh.

How can I have a collective AWR report for RAC database in 10gR2 and 11gR1?

Plz correct me here
awrrpt.sql takes the snapshot at the instance level and incase we have 5 instances we have to take 5 awr reports for a particular period.correct???
If above is true ,any wayout to collect a single collective AWR report for RAC database which includes information on all the instances in Oracle 10g R2 or 11gR1 ?
Thanks in advance
Gagan

I have never come across a way for this. though I can n't say it is not there.
But I guess it may not be feasible too becuase as we know the current AWR report contains data which is specific for one instance.
Various hit ratios, top events, instance effeciency reports.... what not ..
It would be really nice to see something is a new format where it lists values from each instance in a single report.. I guess such a thing Does not exiist as of now.

HT1478 Hi, I want to partition my Ipod Touch so that I can transfer music files to this partition for download to car. Attached Ipod to PC, but coudn't see in Disk Management. Then selected Manually manage Music and Video but still can't see??

I want to transfer music from my Ipod Touch to my car. I found out that I had to partition the Ipod to do this. I attached it to my PC with the USB cable but couldn't see it in the Disk Manager window. Googled why not and saw that I had to select Manually Videos in the Summary section on Itunes. This was already ticked off (selected) and still can;t see the Ipod icon in Disk Manager. What else can I do to partition this Ipod?
Thanks in anticipation ...

iTunes Match on your computer can give you the same higher quality files.
Run iTunes on your computer. Show your music library by Song in list view. Add the columns for Bit Rate, Kind, and iCloud Status to the list view.
Any song that is shown as Matched for iCloud Status, that is NOT already 256 kbps (or higher) for Bit Rate can be downloaded from iCloud at 256 kbps AAC. For example, if you have an old album from a music CD that you ripped years ago at 128 kbps MP3, and it is "matched" by iTunes Match, you can replace the lower quality files you have now with 256 kbps Match AAC audio file (which is shown for Kind).
To do so, select the song, or a set of songs, on the library list. Press Delete. Confirm you want to delete the song (but do NOT check the box to delete song from iCloud) and choose to move song file to the Trash. The songs remain on your iTunes library list, with a "cloud" download button next to the song name.
Click that button to download the song from iCloud. Because the song is Matched, you get the replacement as a 256 kbps AAC audio file, instead of the original 128 kbps MP3 file (or whatever lower quality format it was before).
You can go through your iTunes music library, and replace lower quality Matched songs with higher quality versions, thanks to iTunes Match.

Disk Utility has been partitioning for about 3 hours now.

Ok so I wanted to partition my internal hard drive for time machine. So I went into Applications and opened up Disk Utility. I then Selected my internal hard drive, adjusted the partitions to the desired sizes and clicked apply. All the options grayed out and the little striped progress bar began moving. This was about 3-4 hours ago and nothing has changed. Someone help please, I'm afraid to force quit it or turn off my mac at the cost of my hard drive.

It's not really a progress bar just an animated blue and white "candy cane-like" bar
If that is the case, that is not a progress indicator, so it hasn't yet started to partition and is stalled. Just stop, there will be no damage.
The question now is why has this happened, and what can you change so that it doesn't happen on your next attempt, but goes to immediate partition, which should not take longer than 30 seconds or so.

Can Time Machine do two different backups for me?

I've got Time Machine nicely backing up my main HD to a 1TB external ESATA drive. It does it's thing. That backup on the external drive shares space with my main iTunes library which is now about 280 GB and growing. Would Time Machine also be able to make a backup of that iTunes library to another HD that I would buy for the purpose?
TM was so easy to set up and use I don't remember the choices. That wonderful bonus from Apple brings me here to ask this question.
Thanks all.

You could do it, but it would take some work. First, as I think you currently have things set up, TM backs the main HD to the 1TB drive.
To perform an independent backup of the itunes folder on the 1Tb drive, you must exclude the main HD, and the TM folder that holds the main HD backup. Then "change disk" (TM preferences) to the new HD you will buy. Do a manual backup.
When done, undo all these settings and go back to the setting of backing up the main HD to the 1TB disk (undo the excludes I mention earlier). Now you can go back to "normal" backups of the system drive.
When you are ready to do another backup of the itunes folder, repeat my second paragraph. Like I said - it's a bit of work. You can't have TM do both sets of backups automatically, you must do the manual stuff each time.

How can I configure a slightly different initrd for lts kernel ?

Hi,
Because of the uas problem with my external usb3 harddisk (see uas problem in linux 3.15.1, need advice on the problem), I needed to add a quirk file: /etc/modprobe.d/ignore_uas.conf
It works fine with the standard kernel, but with the lts kernel, it causes systemd-modules-load.service to fail. I think it is because the lts kernel does not know this quirk.
Is there an elegant way to make mkinitcpio ignore this file for the lts initrd by configuration ?
I really do not want to remove / re-add this file every time one of the kernels is updated. Or when both kernels are updated at once, I do not want to remove it, create the lts initrd once more manually, then re-add it ...
Thanks and Regards,
Markus

OK, back to topic :-)
I just did a bit of research about /etc/mkinitcpio.d/ (indeed, I already have two .preset files), but I could not find any information about excluding files from /etc.
Maybe I should have asked about how to exclude files in general.
What I found out is that the files from /etc/modprobe.d are added by /usr/lib/initcpio/install/modconf.
My current idea is to copy it to /usr/lib/initcpio/install/modconf-lts and change it a bit.
But here comes the next problem: For this solution, I would need tow different hooks lists for the standard and the lts kernel. But te hooks list is configured in the global /etc/mkinitcpio.conf, not in the preset files.

Can a constraint check two different tables for the existence of a parent item?

My database has a table Message, and a table MessageReply.
Each MessageReply has a ParentID and a MessageReplyType (Message, or Reply).
When the MessageReplyType is a message, I would like to ensure the MessageReply.ParentID (MessageID) exists in the Message table.
And when the MessageReplyType is a reply, I need to ensure the MessageReply.ParentID (MessageID) exists in the MessageReply table.
I am doing this through client code, but I would like the database to enforce this to protect the database from well intentioned programmers like me.
Can it be done?
Thank you

There is a problem with your function and the whole idea of using a check constraint and a function to simulate a foreign key constraint is problematic.
The problem with your function is when you do a statement like
Set @ReturnValue = (Select MessageID From MessageReply Where MessageID = @ParentID);
then if that row does not exist in MessageReply, @ReturnValue is set to NULL. Then you are returning that NULL from the function and using the check constraint to test whether or not that returned NULL is > 0. Comparing NULL to a value does
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So even if the parent row does not exist, that check constraint will allow the new row to be inserted.
Second, using a function and check constraint to simulate a foreign key constraint always has a problem. If you go with that (and you have written the function and constraint correctly) and you attempt to insert a row with a bad ParentID so that the
ParentID does not exist in the appropriate table, you will get a check constraint error and the insert will be rejected. That is good. However, suppose you successfully insert a row in MessageReply. For example you insert a row in Message with
MessageID = 1 and then insert a row in MessageReply with ParentID = 1 and ReplyType = 1. That will work fine as it should. But now suppose someone deletes the row in Message with MessageID = 1. That delete won't fire the check constraint.
So it will allow the delete of the row in Message and now you have a row in MessageReply which doesn't have a parent.
If you want a method that will work completely, you could do that by 1) doing all of your updates to those tables thought stored procedure(s) that check the data to be sure it is valid before inserting/updating/deleting, or 2) writing trigger(s) on both
Message and MessageReply to make sure that any changes are valid, or 3) add computed columns to the MessageReply table so that you can write foreign key constraints.
I would go with method 3. That would look something like changing your MessageReply table to look something like
Create Table Message(MessageID int Primary Key
-- other columns as needed
Create Table MessageReply(MessageID int Primary Key
,ParentID int Not Null
,MessageReplyType int Not Null Check (MessageReplyType In (1,2))
,ParentMessageID As Case When MessageReplyType = 1 Then ParentID Else Null End Persisted
,ParentMessageReplyID As Case When MessageReplyType = 2 Then ParentID Else Null End Persisted
-- other columns as needed
Alter Table MessageReply
add constraint chk_MessageParentExists Foreign Key(ParentMessageID) References Message;
Alter Table MessageReply
add constraint chk_MessageReplyParentExists Foreign Key(ParentMessageReplyID) References MessageReply;
Tom

Can VirtualBox use a Boot Camp partition for a virtual machine?

Can Sun VirtualBox be pointed at a Boot Camp partition to use it as a virtual machine, much like VMWare Fusion can?
-John

http://en.wikipedia.org/wiki/Virtualbox
http://blogs.sun.com/fatbloke/entry/windows7_onvirtualbox
Check the FAQ
http://www.virtualbox.org/

HT1386 How do you unlock an iphone 3gs so it can be put onto a different network for free?

?

Robbieeeee wrote:
You will have to do that at apple tech bar. To make sure that it's safe for your Phone.
Absolutely incorrect. Apple does not unlock phones. Don't post inaccurate information.

Can AMS disks be in different Partition for a database

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