Configuring for Logical or Physical

DB version : 10.2.0.4
When setting up a standby Database , whether Logical or Physical, at which stage do we specify that we need a LOGICAL or PHYSICAL standby?

I went through an oracle Document for creating a Standby databaseNo, apparently you didn't "go through" the documentation.
This is the correct URL (for 10.2.0.x) :
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/create_ls.htm#i98939
"4.2 Step-by-Step Instructions for Creating a Logical Standby Database" where 4.2.1 is "Create a Physical Standby Database"
Hemant K Chitale

Similar Messages

Can I check whole DB for logical and physical consistency?

Assume I get somehow the impression that a part of a DB is somehow corrupted.
E.g. due to hard disc sector errors or logical reference errors/changed foreign key values.
How can I tell Oracle DB to check itself resp. to verify all the content inside for logical and physical integrity?
Peter

Use DBVerify to check corruption in the datafiles.
Asif Momen
http://momendba.blogspot.com

Which is the optimal hard drive configuration for Logic Pro ?

hello people
i would like to ask your advices about possible hard drive configurations for Logic Pro
I have a Mac Pro and thinking to buy 4 x 500GB drives .
there are several combinations in my mind to configure , but first of all i would like to ask which is the best for an optimal system for Logic Pro
model 1 :
1 stripe Raid 0 array drive for ''System'' (500+500 = 1000)
1 stripe Raid 0 array drive for ''recording + sound banks'' (500 + 500 = 1000)
which means to using 4 hard drives as 2 drives
model 2 :
1 stripe Raid 0 array drive for ''System'' (500+500 = 1000)
1 Single drive for Sound banks (500)
1 Single drive for Recording (500)
which means to using 4 hard drives as 3 drives
Or , it is more healthy to use the drives as single , without raid , stripe sets but with its own capacity instead of combining .
and also if someone has an idea regarding to compare of Seagate and Westerndigital drives (which is the best for audio recording) , would be really helpfull
I am kinda rookie for these subjects :/
thanks in advance

heelo blayzay
thanks for the reply and assistance.
1) how can i create a back up set for the 4th HD to be make back up of the 2nd and 3rd HD
2) what about to make 1st HD for system and 2nd3rd4th (1.5TB) for audio recording, and an external drive for backups ?
For the back ups , is there a special process for the backing up HD (internal or external) ? Or should i just need a Clone software to make the back up
thank you again.

Configuring both logical and physical standby databases.

Hi,
I am trying to set up one primary and two standby databases which are physical and logical. together. What I am wondering is if i tis posiible to set both log_archive_dest_n parameters in init.ora of primary db to 'LGWR ASYNC'.. I tried to do that but I noticed that while redo data goes the first remote log destination including LGWR statement properly but for the second it does not.
So my assumption is only one remote archive dest. can be set for the LGWR process. Is ıt right?
Regards
ALPER ONEY
email:[email protected]

Hi,
when I set remote archive dest _n parameter for logical standby database to the value like 'LGWR AYSNC' and for the phy. standby to 'ARCH', it is ok. But if I change both parameters to 'LGWR'. I can see that only one destination receives the redo data and this destination is also the first destination configured for receiving redodata . I am just wondering that LGWR process is able to serve two or more to destinations at the same time. If it is ok, I am wrong and I better to try harder to solve the problem. I read the Dataguard document for 10GR' and the example for the case I created (two standby databases),, it uses ARCH process to send redo data and so everything is ok in that example.
P.S I also configured standbys for real time apply.
Waiting for your comments.
Regards.
ALPER ONEY

Downtime for logical or physical standby database

Hi ,
Are there any downtime required to refresh the data from the primary database to logical standby or physical standby database. What are the pros and cons of
using logical and physical standby database approach. which one is advisable to use in production environment.
Regards,
Richard

Hi Richard,
I'd suggest you read the documentation as a starting point, to answer your questions on here would be quite lengthy,
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/toc.htm
In a nutshell you dont need downtime to maintain a standby, you can create them from a hot backup of your primary and get them recovering whilst it is open, in terms of which type of standby to use (physical or logical) that depends on your requirements for the use of the standby ... as I said read the doco (chapter 2 has a section on the benefits of each type).
HTH
Paul

What's the perfect new-MBP configuration for Logic?

I hope this isn't a troll. I've been waiting, waiting WAITING for the "refresh" of the MacBook Pro (MBP) to come out so I can solve a few performance problems (including my use of Logic which really requires it to be on one of those laptop fan-stands to keep it cool). The good news? The "refresh" is out. The bad news, there is a huge choice -- old-style MBP or retina-display MBP?
I think I've concluded that "old style" is the way to go -- I like to repair/upgrade my machines too much to give that option up. So now I'm working on what to put in it. Hence this post. Given your experiences, what would you stick in the "perfect" old-style MBP if you were in my shoes? Here's what I'm leaning towards.
-- Max out the non-upgradeable stuff when I buy the machine -- so...
   -- 2.7 GHz processor
   -- Hi-Res Anti-glare screen
-- Minimize the "upgradeable" bits (since I'm going to replace them with aftermarket stuff)
   -- 750GB 5400 rpm disk drive
   -- Minimum memory
-- Aftermarket upgrades
   -- Memory
   -- Disk drive
   -- Replace optical drive with a flash drive
Questions:
1) Memory upgrade -- any recommendations on memory that runs cooler than other types? My current setup started running a bit hotter when I swapped in aftermarket memory. I'd cheerfully buy Apple memory to avoid this problem, but maybe there's an aftermarket flavor that is equally good?
2) Disk drive -- same thing, although I'm not cheerful about buying the Apple versions unless I absolutely have to. Throughput is key, right? Anything else I should be keeping an eye on? Again, heat is something I'm trying to avoid.
3) Optical drive -- I am massively confused on this one. I understand the benefits to throughput (and perhaps heat). But which things should go where? OS and other "static" stuff (like application programs) on the flash drive (to avoid the finite-writes problem)? So put Logic Pro and the sound files on the flash drive (I'm thinking that's what I'm going to do)? Put project files there too? Recommendations on brands? Recommendations on optical-drive replacement kits?
4) Anything else that *you're* doing to build your 2012 MBP for Logic?
Sorry if this is a troll -- I tried to find this post on the list. If there is one, just link me into the thread. Thanks!

The RME I use is so intuitive it knows knows my moods and often refuses to record as it knows I'm going to $uck so why bother.
It also decides on which takes to keep.
pancenter-
p.s. MOTU stuff is solid and straightforward.

Hard Drive Configuration for Logic Studio 9

Based on a lot of prior feedback on this forum, we plan to utilize three separate hard drives on a Mac Pro for Logic 9 -- The System Drive, plus a separate work drive to store and work on the audio/MIDI files, and another hard drive dedicated to sound libraries. My question is, when we go about loading the sound libraries and their engines, do we load them onto the system drive (where Logic will live) and then just copy the actual sample/loop folders to the other hard drive? Or perhaps we should load the entire library and all its files onto the dedicated sound library drive?
As an example, when loading EWQL Symphonic Gold, do we load the PLAY engine onto the system drive and then load the Symph Gold Library onto the dedicated hard drive? Same question for ToonTracks, Superior Drummer 2.0 (VSSD Box) and Big Fish Audio Mojo and First Call Horns which I both believe will run with the newest Kontakt 4.0 engine.
We want to access these various libraries from inside Logic 9. How do we install the engines versus the actual sounds?

heelo blayzay
thanks for the reply and assistance.
1) how can i create a back up set for the 4th HD to be make back up of the 2nd and 3rd HD
2) what about to make 1st HD for system and 2nd3rd4th (1.5TB) for audio recording, and an external drive for backups ?
For the back ups , is there a special process for the backing up HD (internal or external) ? Or should i just need a Clone software to make the back up
thank you again.

What is the best RAID configuration for a MacPro as a Logic User?

There ought to be a universal answer to this question: what is the best RAID configuration for Logic Mac Pro users? I will be more specific.
I use Logic Studio, Reason, Ableton, and Motu Symphonic Instrument simultaneously.
I want to fail safe my precious audio files and improve performance as the system reads/writes data from multiple files, from audio tracks to digital samples.
I want to run video files simultaneously to do nifty audio soundtracking to video.
Here is the configuration I have in mind.
HD 1: OS and Logic Studio, Reason/Ableton samples etc. software (non-raid) (250 GB)
HD 2/3: MIrrored RAID set for AUDIO FILES (500 Gb identical pair)
HD 4: Video files / Bouncing (1 TB)
Makes sense right? A disk for reading software. A pair of 500 GB disks for reading/writing audio files and sessions in mirrored array. A 1 TB disk for video and bouncing. The main question I have is, for audio files only, is striped or mirrored better? 64K blocks the best? And are there any more details. I assume to do this in Disk Utility.

Well, both Mirrored and Striped have their pros and cons. If you use mirrored, it will offer no better performance than the spec'ed drive along with it's sata bus speed. The plus point is, if one drive goes down, you have the second as a backup as the complete contents of one drive are mirrored on the other.
With striped you will get a performance boost because all files (for example a single project) will get written across both drives and hence split the load on the drives and the SATA busses. The drawback is that you'll have to make sure you have a good, regular backup schedule in place because when one of the drives goes to drive heaven, you're going to be stuffed without a full backup of both drives.
Exactly what performance boost you'd get will depend on your project, number of files, size of files, fragmentation of files, track count etc. You may find it would be easier to use the 3 drives straight, with no raid and have:
HD 1: OS and Apps. No samples at all.
HD2: Audio Files for Logic projects
HD3: Reason, Ableton, Logic etc instrument sample library
HD4: Video and bouncing.
Which is what I ended up doing although I use HD4 as an interchangeable backup for HD1 and 2.
There is no universal answer to this as each must make their own choice based on their preferences and needs. Mirrored will give you full backup but on-site, in machine backup. Not much good if something untoward and drastic happens to the physical machine. I think a few people toy with striped RAID but fall on the side of using the drives straight, as in their projects they don't see a big enough gain over splitting the data across your 3 remaining drives without RAID. Studios that seriously consider raid often go out and get a dedicated raid that can offer more variations than raid 0 or raid 1 (Striped and Mirrored) and better throughput.
I hope this helps a little and not just added to the dilemma.

Logical and physical clear in ASO

Hi There,
I found one statement for Logical and physical clear in essbase dbag
The process for logically clearing data completes in a length of time that is proportional to
the size of the data being cleared.
The process for physically clearing data completes in a length of time proportional to the
size of the input data, not to the size of the data being cleared
What does size of the input data actually means? How it is different from data being cleared.
Thanks.

What is interesting with these statements is based on them, you would think a logical clear would be slower than a physical clear. In reality, it is vastly faster. I took a 30 minute physical clear down to about 40 seconds with a logical clear. Logical clers create offsetting entries from the main cube in a slice to produce a result whila a physical clear deletes the actual data. The one thing about logical clears is rather than have #missing for cleared intersections you get zeros

Transition logical to physical failover

Can you change a logical failover to a physical failover using dataguard. I'm running Oracle 10.1.0.4 on Windows
thanks.

Hi,
Do you mean you are running a logical standby and you need a physical failover?
or do you need to change your configuration from logical to physical?

MacBook Pro for Logic? Best configuration?

Hi everyone,
Thanks in advance for any thoughts about this.
I’m ready to upgrade my 7-year-old PowerBook G4 (which has served me so very well) to something more current. Logic Pro will be a primary use of the new Mac. With my understanding of ports and busses and the requirements of a DAW, I’m wondering about best configurations for a Mac DAW.
I generally record one, two or maybe three audio tracks at once, then add a bunch of software instruments (drums/percussion, strings, horns, pads, etc.) to craft a song. It would be nice, though, to have the possibility of recording a live drum kit or even a live band (so up to 16 tracks at once).
Aside from CPU speed, number of cores, memory, etc., my understanding is that there are two critical pieces of technology required for a well performing DAW. First is an audio interface. Second is fast storage for reading/writing audio files.
My preference is to upgrade to another Mac laptop and I’m thinking about the latest i7 MacBook Pro, 15”. I don’t want the 17” because it’s too big and heavy and I’ll be using an external monitor most of the time. (Still would like the portability of a laptop, so would rather not go with an iMac or Mac Pro.)
My concern is that the 15” MBP does not have the ExpressCard/34 slot. Without this slot there’s only one USB buss and one Firewire buss to connect a hard drive and audio interface. So either of these devices would be limited by the maximum speed of USB 2. If the 15” had an ExpressCard/34 slot, I would put a Firewire audio interface on the FW port, then buy either a FW 800 or USB 3 ExpressCard and attach an external drive to it.
So my first question is: given only FW 800 and USB 2, what would be the capabilities of audio recording on a latest i7 MBP? Would you attach an audio interface to FW 800 and an external drive to USB 2, or the other way around? Most FW audio interfaces I’ve seen support only FW 400, so would it make more sense to attach an audio interface to USB 2 and a FW 800 drive to FW 800?
Whichever the best option, does anyone have a rough sense for how many audio tracks could be recorded and played back with an optimally configured i7 MBP?
Another question: Is it possible to remove the DVD drive of a MBP and replace it with a hard drive? If so, would the buss be capable of FW 800 speeds? (I’m assuming the DVD drive connection to the MBP is an independent buss not to be affected by other devices.) I guess a FW 800 controller of some sort would be necessary? If this is an option, then one could have two independent busses for storage access and audio interface, both functioning at FW 800 speeds?
Last question: Would using a SSD as either the internal drive or an external be particularly helpful in this situation?
I hope this all makes sense. I’ve used a Yamaha AW4416 for recording for years and I’m a little queasy about switching to a DAW because of potential latency and performance issues. One option would be to sync my AW4416 to Logic Pro, use the AW4416 for recording tracks, then transfer the audio files to the Mac for mixing with Logic Pro.
Many thanks for any opinions, feedback. Very much appreciated.
Tim

Phew - long post! Let me try and find your questions...
So my first question is: given only FW 800 and USB 2, what would be the capabilities of audio recording on a latest i7 MBP? Would you attach an audio interface to FW 800 and an external drive to USB 2, or the other way around? Most FW audio interfaces I’ve seen support only FW 400, so would it make more sense to attach an audio interface to USB 2 and a FW 800 drive to FW 800?
I would go: FW800 -> FW800 Drive -> FW400 Audio interface.
Whichever the best option, does anyone have a rough sense for how many audio tracks could be recorded and played back with an optimally configured i7 MBP?
It all depends on what a track is. There is a different between one 16/44 audio track on it's own, a 24/96 audio track loaded with plugins, and a heavy software instrument track with high polyphony and loads of plugins.
In terms of raw tracks, you can get way more than you will practically need. Yes, they shouldn't have dropped eSata (I'm keeping my older MBP for this reason - I can connect eSata drives or my UAD2 depending on my needs)
Another question: Is it possible to remove the DVD drive of a MBP and replace it with a hard drive?
Yes, but it may void your warranty, depending on how you do it.
If so, would the buss be capable of FW 800 speeds?
Internal drives are SATA, much faster than FW800 in general. Throughput mostly depends on drive speed and performance, more than any bus speed limitations.
(I’m assuming the DVD drive connection to the MBP is an independent buss not to be affected by other devices.)
Not sure on that. Optical media are very slow devices anyway...
I guess a FW 800 controller of some sort would be necessary?
Internal drives have nothing at all to do with FW.
If this is an option, then one could have two independent busses for storage access and audio interface, both functioning at FW 800 speeds?
To be honest, unless you are planning massive projects, you'll be fine with an external FW800 drive. If you are planning on doing large projects that one FW800 can't cope with, then you shouldn't be looking at a laptop, you should be looking at a Mac Pro.
I think you're probably worrying too much - a well specced MBP sensibly configured is a very capable machine.
Last question: Would using a SSD as either the internal drive or an external be particularly helpful in this situation?
I'm still dubious to how SSD's will hold up in the long run - they haven't been around very long, and I'm concerned about the limited lifespans (maximum number of writes etc). I wouldn't go there personally, not yet.
I’ve used a Yamaha AW4416 for recording for years and I’m a little queasy about switching to a DAW because of potential latency and performance issues. One option would be to sync my AW4416 to Logic Pro, use the AW4416 for recording tracks, then transfer the audio files to the Mac for mixing with Logic Pro.
Once you're comfortable with Logic, you won't go back, I'm reasonably sure of that...

How to configure a Logical System for XI External System

I'm following the 'How to configure SAP XI to use the standard SAP communications APIs (idoc, pabi, rfc) from external system - How to create XI content with the Integration Builder' document.
I have everything configured, but in section 6.7 when I try to do a transaction BD10 on to send a MATMAS01 idoc using my Logical System IQS_EXTERN to my external system, it says '1 master IDocs set up ...', then it says '0 communication IDocs generated ...' and my external system does not get the IDoc. The NX7 Integration Engine does not get a message from SAP_CE8 to IQS_EXTERN.
How do I specifically configure my Logical System IQS_EXTERN to communicate with my external system via XI (NX7)?
I'm using the ICC Test-System CE8, SAP R/3 Enterprise 4.7 IDES and the NX7 Exchange Infrastructure (http://iccpi7.sap.com/rep/start/index.jsp).
Thanks,
Ed Culnane
Edited by: Ed Culnane on Oct 15, 2008 7:02 PM

Check whether you have setup Partner profile for receiving system ( Here its XI system). You need to create outbound parter profile for XI system.
Check out this forum ...
Re: trying to send Idoc using Standard Outbound Processin option
and blog ..
Introduction to IDoc-XI-File scenario and complete walk through for starters.
Hope this will help.
Nilesh

How configure a Logical System (XI) as receiver for an Outbound Idoc?

Hi all,
How can I configure a Logical System (XI) as receiver for an Outbound Idoc?
Points will be given,
Regards,
Daniela

hi,
it all depends on what kind of document you need to send to XI
if you want to send some logistic documents (like orders, deliveries etc)
have a look at my book - where you will find step by step guides
<a href="/people/michal.krawczyk2/blog/2006/10/11/xi-new-book-mastering-idoc-business-scenarios-with-sap-xi"><b>Mastering IDoc Business Scenarios with SAP XI</b></a>
then you will undestand where to change to get it send via LS
Regards,
michal
<a href="/people/michal.krawczyk2/blog/2005/06/28/xipi-faq-frequently-asked-questions"><b>XI / PI FAQ - Frequently Asked Questions</b></a>

Reg: where used list for the any logical (or) physical files

Hi
Is there any possible way to check the where used list for the any logical (or) physical files (Tcode: FILE)
Please let me know.

if the path is hard coded in the program...
you can use : RPR_ABAP_SOURCE_SCAN to scan the system and find out where its hard coded....

Physical DB Configuration for 11g

Hi,
Can someone please let me know what can be the good configuration for designing a Database of size 1TB in 11gR2.
1) How much size we can allocate for Undo tablespace keeping the undo retention value to default
2) How many redo groups and how many members per group considering the log switch are not very frequent ( 2-3 groups should be enough and 2 members per group and each member can be 200MB. Let me know if we can design it in a better way)
3) Size of system,sysaux and temp tablespaces
Thanks in advance.

Its not so easy to answer your question if you are gonna create a 1TB database fresh.
But as you had estimated the size of the database;I presume you have a similar set up (production/staging/dev/test).
So perform the follwing in order to decipher your concerns:
1) How much size we can allocate for Undo tablespace keeping the undo retention value to default
Sizing an UNDO tablespace requires three types of information; viz:
--Number of undo data blocks generated per second (UPS)
--UNDO_RETENTION in seconds (UR)
-- Overhead varies based on extent and file size (db_block_size) (DBS)
UndoSpace = [UR * (UPS * DBS)] + (DBS * 24)
In this UR and db_block_size can be obtained from pfile or spfile.
The third piece of the formula (UPS) requires a query against the database. The number of undo blocks
generated per second can be acquired from V$UNDOSTAT.
The following formula calculates the total number of blocks generated and divides
it by the amount of time monitored, in seconds:
SQL>SELECT (SUM(undoblks))/ SUM ((end_time - begin_time) * 86400)
FROM v$undostat;
Column END_TIME and BEGIN_TIME are DATE data types. When DATE data types are subtracted,
the result is in days. To convert days to seconds, you multiply by 86400, the number of seconds in a day.
The result of the query returns the number of undo blocks per second. This value needs
to be multiplied by the size of an undo block, which is the same size as the database block
defined in DB_BLOCK_SIZE.
The following query calculates the number of bytes needed:
SQL> SELECT (UR * (UPS * DBS)) + (DBS * 24) AS "Bytes"
FROM (SELECT value AS UR FROM v$parameter WHERE name = 'undo_retention'),
(SELECT (SUM(undoblks)/SUM(((end_time - begin_time)*86400))) AS UPS FROM v$undostat),
(select block_size as DBS from dba_tablespaces where tablespace_name=
(select upper(value) from v$parameter where name = 'undo_tablespace'));
NB: The above described UNDO calculation is compiled from Metalink Note : 262066.1
2) How many redo groups and how many members per group considering the log switch are not very frequent
(from Metalink Note : 781999.1)
An excerpt from the Oracle Database Performance Tuning Guide provides the general guideline.
"It may not always be possible to provide a specific size recommendation for redo log files, but redo log files in the range of a hundred megabytes to a few gigabytes are considered reasonable. Size your online redo log files according to the amount of redo your system generates. A rough guide is to switch logs at most once every twenty minutes."
So if your online redo logs (for example) switch once every 5 minutes during peak database activity, to achieve the 20 minute guideline, the logs would each need to be 4 times larger then their current size. (i.e. 20 / 5 = 4)
3) Size of system,sysaux and temp tablespaces
i) SYSTEM tablespace's size - dont have much idea; what should be the minimum size of the SYSTEM tablespace. But in most of the cases a size of 500 to 600 MB should be fine
ii)SYSAUX tablespace's size - Default size for SYSAUX is 210Mb. Once again; most of the case a size of 400 to 500 MB should be fine
iii)TEMP tablespace's size - You have to monitor the TEMP space usage continuosly in order to zero on an optimal size.
You can query DBA_TEMP_FREE_SPACE for this in order to get how much TEMP space is allocated and how much is free.
SELECT * from DBA_TEMP_FREE_SPACE;
TABLESPACE_NAME TABLESPACE_SIZE ALLOCATED_SPACE FREE_SPACE
TEMP 250609664 250609664 249561088
Hope this helps
Regards
Shamseer
[email protected]

Configuring for Logical or Physical

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