Multithreaded DB access from single partition

I believe Oracle and SQLServer now allow Forte to perform multithreaded DB
access from one partition(on NT at least).
Has anyone developed a design pattern for managing multiple DBsessions in a
single partition?
Thanks,
Jason Westra
CSC Consulting - Lynx Group

This is the expected behavior. See:
Multiprocess Applications
If you need access to a JE Environment from multiple processes, you'll have to implement a client-server interface. JE is an embedded database, and doesn't come with this capability.
--mark

Similar Messages

RE: Accessing multiple Env from single Client-PC

Look in the "System Management Guide" under connected environments page
72. This will allow services in your primary environment to find
services in your connected environment. However, there is a bug
reported on this feature which is fixed in 2F4 for the HP and H1 for all
other servers. The following is from Forte:
The connected environments bug that was fixed in 2F4 is #24282. The
problem
was in the nodemgr/name server source code and caused the following to
occur:
Service1 is in connected envs A and B.
Client has env A as primary, B as secondary.
Envmgr A dies before the client has ever made a call to Service1.
Afer env A is gone, client makes a call to Service1 which causes Envmgr
B to
seg fault.
You should upgrade your node manager/env manager nodes to 2F4. The 2F2
development and runtime clients are fully compatible with 2F4 servers.
Kal Inman
Andersen Windows
From: Inho Choi[SMTP:[email protected]]
Sent: Monday, April 21, 1997 2:04 AM
To: [email protected]
Subject: Accessing multiple Env from single Client-PC
Hi, All!
Is there anybody has any idea to access multiple environments from
single client-PC? I have to have multiple environments because each
environment resides geographically remote node and network bandwidth,
reliability are not good enough to include all the systems into single
environment.
Using Control Panel for doing this is not easy for those who are not
familiar with Windows. The end-user tend to use just single application
to access all necessary services.
I could consider two option to doing this:
1. Make some DOS batch command file to switch different environment
like, copying back/forward between environment repositories and
set up forte.ini for changing FORTE_NS_ADDRESS. After then, invoke
proper client partition(ftexec).
2. Duplicate necessary services among each environment.
But, these two options have many drawbacks in terms of system
management(option 1), performance(option 2) and others.
Has anybody good idea to implement this? Any suggestion would be
appreciated.
Inho Choi, Daou Tech., Inc.
email: [email protected]
phone: +82-2-3450-4696

Look in the "System Management Guide" under connected environments page
72. This will allow services in your primary environment to find
services in your connected environment. However, there is a bug
reported on this feature which is fixed in 2F4 for the HP and H1 for all
other servers. The following is from Forte:
The connected environments bug that was fixed in 2F4 is #24282. The
problem
was in the nodemgr/name server source code and caused the following to
occur:
Service1 is in connected envs A and B.
Client has env A as primary, B as secondary.
Envmgr A dies before the client has ever made a call to Service1.
Afer env A is gone, client makes a call to Service1 which causes Envmgr
B to
seg fault.
You should upgrade your node manager/env manager nodes to 2F4. The 2F2
development and runtime clients are fully compatible with 2F4 servers.
Kal Inman
Andersen Windows
From: Inho Choi[SMTP:[email protected]]
Sent: Monday, April 21, 1997 2:04 AM
To: [email protected]
Subject: Accessing multiple Env from single Client-PC
Hi, All!
Is there anybody has any idea to access multiple environments from
single client-PC? I have to have multiple environments because each
environment resides geographically remote node and network bandwidth,
reliability are not good enough to include all the systems into single
environment.
Using Control Panel for doing this is not easy for those who are not
familiar with Windows. The end-user tend to use just single application
to access all necessary services.
I could consider two option to doing this:
1. Make some DOS batch command file to switch different environment
like, copying back/forward between environment repositories and
set up forte.ini for changing FORTE_NS_ADDRESS. After then, invoke
proper client partition(ftexec).
2. Duplicate necessary services among each environment.
But, these two options have many drawbacks in terms of system
management(option 1), performance(option 2) and others.
Has anybody good idea to implement this? Any suggestion would be
appreciated.
Inho Choi, Daou Tech., Inc.
email: [email protected]
phone: +82-2-3450-4696

Accessing multiple Env from single Client-PC

Hi, All!
Is there anybody has any idea to access multiple environments from
single client-PC? I have to have multiple environments because each
environment resides geographically remote node and network bandwidth,
reliability are not good enough to include all the systems into single
environment.
Using Control Panel for doing this is not easy for those who are not
familiar with Windows. The end-user tend to use just single application
to access all necessary services.
I could consider two option to doing this:
1. Make some DOS batch command file to switch different environment
like, copying back/forward between environment repositories and
set up forte.ini for changing FORTE_NS_ADDRESS. After then, invoke
proper client partition(ftexec).
2. Duplicate necessary services among each environment.
But, these two options have many drawbacks in terms of system
management(option 1), performance(option 2) and others.
Has anybody good idea to implement this? Any suggestion would be
appreciated.
Inho Choi, Daou Tech., Inc.
email: [email protected]
phone: +82-2-3450-4696

Hi, All!
Is there anybody has any idea to access multiple environments from
single client-PC? I have to have multiple environments because each
environment resides geographically remote node and network bandwidth,
reliability are not good enough to include all the systems into single
environment.
Using Control Panel for doing this is not easy for those who are not
familiar with Windows. The end-user tend to use just single application
to access all necessary services.
I could consider two option to doing this:
1. Make some DOS batch command file to switch different environment
like, copying back/forward between environment repositories and
set up forte.ini for changing FORTE_NS_ADDRESS. After then, invoke
proper client partition(ftexec).
2. Duplicate necessary services among each environment.
But, these two options have many drawbacks in terms of system
management(option 1), performance(option 2) and others.
Has anybody good idea to implement this? Any suggestion would be
appreciated.
Inho Choi, Daou Tech., Inc.
email: [email protected]
phone: +82-2-3450-4696

Selecting data from Multiple Partitions in a single select stmt.

Hi all,
My Database is very large & my tables are partitioned.
My question is:
1) If my data is spread across multiple partitions, is there any way to select data from multiple partitions in a single query?
If we dont mention partition name also it works fine, but perofmance wise it will be very slow. (Using EXPLAIN PLAN)
(Note:I dont want to make use of Union concept, i want to do it in a single select statement)
For ex:
qry1.sql:
select empno from emp_trans partition (P012000)
This above query(qry1.sql) will work fine.
qry2.sql:
select empno from emp_trans partition (P012000,P022000)
The above query(qry2.sql) will return will return the following error:
ORA-00933: SQL command not properly ended
If anybody has any solution for this, pls mail me immediately.
Thanks in advance
bye
null

All my queries are dynamically generated. All my tables are also indexed partition wise based on date field. My question is, if i want to mention multiple partition names at the time of generating my query(select), then with parformance will be good. I have refered some books, inthat what they say is to use UNION concept, i dont want to use that, instead i want in a single select statement.
Thaks for ur reply
Bye
null

Is it possible to access a single Lightroom catalogue mounted on a shared drive from multiple computers, each with an individual Lightroom install?

Is it possible to access a single Lightroom catalogue mounted on a shared drive from multiple computers, each with an individual Lightroom install?
Thanks.
Steve Greenberg

No, Lightroom catalogs cannot be on a networked (shared) drive, and they do not support simultaneous multi-user access

Multithreaded access from C++

I am trying to get multithreaded access to Oracle from C++. If I stagger my multiple connections in threads, no problem. When I interleave my activity, I get SQL 2131 and ORA 1076 (i.e., multiple logons not currently supported) errors. What is this ? I thought Oracle permitted multiple concurrent access from C++ if the main process is thread safe? HELP ?

My first error was that I did not have separate sql_context handles. Now, with that code correction, I can make multiple connections. However, only the first connection returns an sqlca_sqlcode = 0, all the rest return -1012 (i.e., not logged on to Oracle) even though all the connections are SUCCESSFULLY connected to Oracle and have no problem performing work! Anybody know why I get an ORA -1012 error?

Repartitioning a single drive from 2 partitions to 1 while maintaining a Time Machine backup

This is a bit of a quirky situation and I had a very difficult time finding the right search terms to bring me anywhere close to an answer. I still don't have one.
So here's the situation: I have an iMac hooked up to a 1TB external HDD via FireWire. Previously I had the HDD partitioned into 1 500GB partition for Time Machine and 1 1500GB partition for media files. I have since decided to move all my media back onto my internal HDD and would like to repartition the entire external HDD for use with Time Machine (as I will now have Time Machine backing up many of these media files as well) but I don't want to lose my existing backup history. I've seen the instructions for moving a Time Machine backup from one drive to another but how do I move a Time Machine backup off of an external HDD, reformat said drive from 2 partitions to 1, and move the backup back to it without disrupting the hard links?

BacktwoBedlam wrote:
The Time Machine backup is just an image
No, it's a complex set of folders and files, intricately linked together with multiple hard links.
Copying it to your internal HD will take a long time, if there's room for it; and emptying the trash after deleting it will take an extremely long time, and likely result in permissions and/or locked file problems.
If you do have to copy the Backups.backupdb folder, copy it only to a separate partition so you can just erase it when done.
See #18 in Time Machine - Frequently Asked Questions for details.

Using external HDD for Time Machine and files in one single partition ?

Hello everybody.
I've been searching for some time now and have encountered some contradictory answers, so I turn to you.
I would like to know if it's possible (one) and safe (two) to use a single partition for both Time Machine and file storage. I've read that this should be ok, since TM is actually only a single folder, which means the rest can easily be used as a standard Finder drive. Some people say however that this is not good to do so, because TM will run out of space quicker. But if the -let's say- 30Gb used for files where used by TM after a month, that would be the same, wouldn't it ? It would simply erase older backups. But is it safe to do so ? Will Time Machine not makes errors when accessing files or doing an entire system backup ? I don't won't to make a new partition really, that's why I'm asking you here, to let me know some arguments about it.
Thank you very much for your answers.

Marekova wrote:
Yet, overlooking that, you say "safe: mostly", why is that ? where's the "danger" or, what where you thinking when you said that ? Aren't these simple folder's ? Do you mean that, because during a full backup, these "stranger" files could be a problem ? It would be great if that was clarified, since I've found no indication about it elsewhere, has anyone tryed it ?
Oh, yes folks have tried it. That's why I (and many others) recommended against it.
Here's a similar thread from just the other day: http://discussions.apple.com/thread.jspa?threadID=1926893 Note the responses from the top 2 "gurus" on this forum.
I probably should have asked you what you mean by "safe." If you mean, will TM delete other files on it's partition, no, it won't. If you mean, can there be problems, then yes, there can be conflicts and difficulties, as mentioned.
As to whether TM backups are simple folders, no, they aren't. They look like normal files and folders, but they actually contain what are variously called "hard links," "multi-links," and (my own personal favorite term) "ghost clones." Think of them as very fancy aliases. So they're not to be fooled with directly, by us mere mortals.
If you want more on this: http://arstechnica.com/apple/reviews/2007/10/mac-os-x-10-5.ars/14
and/or: http://www.appleinsider.com/articles/07/10/12/roadto_mac_os_x_leopard_timemachine.html
and, if you haven't seen it yet: http://www.apple.com/findouthow/mac/#tutorial=leopardtimemachine
You should also know that, for some reason, TM stores it's backups differently when it does them wirelessly. In that case, they're in a "SparseBundle," very different from the structure used for directly-attached backups.
All the more reason to put each Mac's backups in a separate partition, and if you want to store other data there also, a 3rd partition for that.
I've been using Mac since many years now, but I have no idea about backups, so excuse me if the statements appear a little childish.
Nope. Even those of us who are "older than dirt" and have used many flavors and varieties of backup systems for decades are in a whole new world with Time Machine.
And most of the folks on this forum who found themselves in deep trouble got there because they assumed things or didn't ask.

I was partitioning my HD to allocate free space to give to my windows partition in Boot Camp. Now I cant access my windows partition at all. Please help.

I was partitioning my HD to allocate free space to give to my windows partition in Boot Camp. Now I cant access my windows partition at all. Please help

TTBOMK the only way you can increase the Windows partition is to repartition the drive back to a single partition
Then reinstall Mountain Lion
Restore all data from backup
Create new larger partition with Boot Camp
Install Windows
Restore data from backup
Allan

Extremely Slow Disk Access from External Drives (USB & Firewire)

Following the upgrade to 10.6.2 (from 10.6.1), my computer is communicating extremely slowly with all external drives (both Firewire 400 and USB). File transfers which used to take less than a minute now take 5-10 minutes (less than 1 GB). Peering into the Console, I see messages for each aspect of a file reading: Nov 13 12:30:12 Nautilus /System/Library/CoreServices/Finder.app/Contents/MacOS/Finder[152]: Possible unresolved transaction race -105/filename
(Nautilus is the name of the computer)
By "each aspect", I mean that for Pages files, it provides a message for Quicklook,(null) , Contents,(null) , and filename,(null).
All disks are in good health, formatted as FAT32 for ease of use with all OS types, and are SATA.
Again, this occurred immediately following the installation of 10.6.2 (both Software Update and Combo). I've seen similar errors online with iTunes libraries on network drives, but this is on directly connected drives.
I normally wouldn't ask this, but, is there a way to reinstall 10.6.1 over .2? At this point, Time Machine would likely cause me to lose other data as well in a full revert, since it has been more than a few days.

I have various personal files backed up on these drives (not system data): music, pictures, documents, etc.
FAT32 should not be an issue, as I have used these drives for over 2 years with Tiger, Leopard, and then Snow Leopard with nay an issue, until now. Additionally, while the Time Machine backup may be an archive, it is the sole occupier of an HFS-formatted partition which is not exhibiting the issue. I only included that information since it is physically on the same drive as a partition (FAT32) which is being troublesome to rule out driver/hardware problems.
Bottom line: All of my drives worked perfectly on 10.6.1 (and continue to do so on my other Macs (10.5.8), but do not on 10.6.2. I was only looking for a potential solution to my computer's specific issue, not a statement that my "compromise" is the cause of my problems.
Actually, since Apple fully supports read/write access on FAT32 partitions, I should, indeed, be able to "have all things all ways...", no offense intended.

The guide to bootcamp assistant states that bootcamp can only be installed on a drive with a single partition. New Macs with Lion preinstalled have two partitions - the second is a recovery partition. How do I install Bootcamp?

Late in August 2011 I took delivery of a new 27" iMac with Lion preinstalled. I need to run Windows as well. Following Apple's written suggestion, I printed off the then current 12 pages of the document "Bootcamp Installation & Setup Guide" which clearly stated that the hard drive you were going to install on had to have on it, before install, a maximum of one partition. Using finder and disk utility I determined that there was only one partition. Unbeknownst to me, there was (is) an additional hidden (from those two pieces of software) partition on the disk. As of machines delivered new with Lion preinstalled, Apple has begun to include a "recovery partition". In that partition there is a copy of the software necessary to reinstall Lion via a download from the Apple App Store. Not knowing the partition was there, I cranked up "Bootcamp Assistant" which nicely offered to repartition my hard drive creating a "Bootcamp Partition" in addition to the existing. I told it how big to make each and hit the do it button, subsequently destroying my operating system. Oh, it very nicely told me, after the damage was done, how many partitions were REALLY on the disk and that I could not install Bootcamp cause there were too many partitions.
Luckily the the Recovery Partition, which at that point I knew existed, was not harmed and after doing some research on another compter, I used it to once again download Lion from the App Store and reinstall. So, I have recovered but am still stuck with the problem: how do I install Bootcamp in this new environment?

First you need to seriously back up your Mac.
A clone is an exact duplicate of your existing Mac HDD. Merely copying and pasting a drive will not make a bootable backup. In case of problems you can boot from an Ext HDD clone and use the utilities to repair, reformat, or clone the Ext HDD back to the internal Mac HDD. While Time machine back ups are easy you can not boot from it. The best thing to have for any kind of problem is a bootable clone backup on an external drive. Some even have two external backup drives in case one fails. There are two good apps for cloning named SuperDuper and Carbon Copy Cloner.
In dealing with the recovery partition a simple approach is to clone the Mac partition to an external disk then re-partition the Mac to a single partition (GUID partition table) . Then clone the external disk clone back to the Mac. You will now have only one Partition and Boot Camp assistant sould not object.
Some have recommended getting rid of the recovery partition while others have advised not to do this. If you have the Lion USB Thumb Drive you do not need a recovery partition so can discard it without concern. There is another way to get rid of the recovery partition if you decide to do it but first be sure to have a backup of your Mac ( I know I sound like a nagging mom but many dead computers have been saved by this simple precaution).
Use Disk Utility.
1) Make the Recovery visible in Disk Utility by using a program like Secrets:http://www.macupdate.com/app/mac/27025/secrets or MacPilot:http://www.koingosw.com/products/macpilot.php (15 day free trial).
2) Highlite the Recovery partition and Control click it and select Mount the partition.
3) With the Recovery partition highlited, erase the partition, you'll get an error message, ignore it.
4) Now highlite the top identity of the hard drive and select the partition tab.
5) Highlite the Recovery partition and press the minus sign.
6) Click and hold on the bottom edge of the partition above and drag it to the bottom, if it doesn't go there automatically, the press apply.

Disk Utilty - what is difference between single volume and single partition

In Disk Utility I can, should I wish, format a drive by using Erase to create a single volume. Also in Disk Utility, I have the option to use Partition to create one (or more) partition.
What is the difference between a volume and a single partition?
What are their relative merits?
In what circumstances would I want to create a single partition instead of a volume?
Disk Utility also prompts me to name the volume or partition. From experience, what would you suggest as a suitable name and where is this information subsequently used?

A "volume" or "partition" are the same thing. The subject of using partitions has been covered many times on the forums. Do some searching and you'll find quite a lot of information. Also try doing some Google searching.

Trying to get rid of error "The startup disk cannot be partitioned or restored to a single partition". Recovery HD visible.

Hello,
I've been stuck for some hours now trying different things to install Windows 7 on my Macbook Air, and I think now is the time to call for some custom help.
I'm using OS X 10.9.5 Mavericks.
So some months ago I just wanted to run Linux on my laptop so I installed rEFInd, shrunk the Macintosh HD partition by 25GB and booted on a linux live USB flash I burned using dd.
Then I used gparted to create my linux partitions.
It worked just fine, even though disk utility from OS X seemed quite unhappy about this (it seemed to have incorrect informations about the filesystem on these partitions, seeing them as journaled Mac OS while they were clearly not). At this point already, the Recovery HD from mac showed up in disk utility, which I found weird but didn't bother me.
But recently I needed windows on my Mac. So after a few tries for the triple boot, I managed to create a bootable USB stick with boot camp, which already showed me the message "The startup disk cannot be partitioned or restored to a single partition" and hence refused to partition/install himself.
So I thought "OK, that's no big issue, I can just partition with disk utility and then boot on the USB stick and everything will work fine". But when EFI booting on the USB flash drive I got stuck at the beginning of Windows installer with no keyboard or mouse support.
After some hours spent googling, I was unable to find a working fix for that, and as there was no support for my case (where I used bootcamp to create the bootable flash but NOT to partition/reboot) I decided to give bootcamp a try.
So I erased my linux partitions, and cleaned up everything I could on the HD with disk utility. That means I now have two partitions showing in disk utility : Macintosh HD and Recovery HD.
When using disk utility from terminal, the list is :
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *121.3 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            80.0 GB    disk0s2
   3:                  Apple_HFS Recovery HD             650.1 MB   disk0s3
But boot camp still isn't happy, and the message "The startup disk cannot be partitioned or restored to a single partition" keeps popping after the intro and I can't partition/boot from bootcamp.
So, as I don't understand what is wrong here anymore, any help would be greatly appreciated!
I will be watching the thread a lot because I really would like this resolved (or windows installed one way or another) this weekend; so any questions on my past manipulations or config just ask!
Thank you.

keyboard issues are also something of a common issue.
I wish the best threads were voted to the top of forums, something! Me, I literally burned out here, but after installing 10 Preview, wanted to "see what was going on" after hiatus of a couple years and see if anything had changed (no, not really!)
Also, these new Communities are not putting "more like this" and failing to help too.
I think rewriting Boot Camp Assistant's built in help and pdf would help a lot, and needs to be clearer and go into details. And Yosemite was not it seems tested against Boot Camp, and drivers for new Macs + new OS also lag behind. Again, common and no sign of improvement or change.
One of the tricks to the "can't partition" is rather simple - of course backup is step #1 and is spelled out - SHRINK the main HFS+ partition! then stretch it back to full length. Sometimes a reboot is needed, and sometimes even do a Safe Boot - not sure what but Recovry Mode might be a good option too. That does seem to consolidate free space, move files that are locked and cannot be moved otherwise, and allow BCA to partition, jusst be sure to have enough space left and large enough for a proper Windows install (and fudge factor).

After upgrading to Lion can't get Boot Camp to work! Just get "startup dusk cannot be portioned or restored to a single partition"?

After upgrading to Lion can't get Boot Camp to work! Just get "The startup disk cannot be partitioned or restored to a single partition". Anytone?

This message, and threads like yours got asked daily for over two years, now it is only a couple times a week!!
Is it so hard to follow through? you were to have backup already, clones are best, then erase/format and restore.
Then partition.
Some have been able to use Disk Utility booted from OS X DVD or another drive, and repair the drive.
You have to use Boot Camp Assistant (99.9% anyway) to create and achieve a proper Windows Master Boot Record partition.

Setting up Remote Desktop Apps for access from a Mac with 2FA

Hi
Setting up Remote Desktop Apps for access from a Mac with 2FA.
I have a server 2012 remote access gateway, with remote apps published(which uses single signon), behind a 2FA connection (web based) and want to know if its possible to allow macs to connect to the remote Apps behind it. i cannot permanently remove any
of the above setup as it is a requirement.
When i connect from a mac i can login to both the 2FA and remote access web pages and see all the apps but when i click on any app it downloads it to the mac and when i try to run it using Remote Desktop App for MAC i get an error :
"httpendpointexception: 4, The non-proxy http connection failed to connect with the message: 500 internal Server Error."
I have tried with 2fa turned off for testing and get the same result.Does it support 2012 TSGW server? does it support Remote desktop apps? as i cant find a definitive answer on either.
Thanks in advance for any advice.

Hi,
Thank you for posting in Windows Server Forum.
From Error description it seems to be a communication issue between your Mac and your RD gateway server. If you connect from extranet, you may need Remote Desktop Gateway or a VPN/Direct Access connection to your intranet, or forward port 3389 on your router.
500 Internal Server Error seems to be a HTTP related error.
The HTTP status code in IIS 7.0, IIS 7.5, and IIS 8.0
Also, please double check the settings if you have a RD gateway implemented in you intranet.
http://redmondmag.com/articles/2013/12/24/rd-gateway-in-windows-server.aspx
In Windows Server 2012 R2 RD Gateway pluggable authentication is also introduced. This allows custom authentication routines to be used with RD Gateway. For example building a two-factor solution on top of RD Gateway is now possible which allows doing token-authentication
to the RD Gateway which works seamlessly with RD Web Access or RDP file launching.
Please check below article for more information.
Windows Server 2012 R2 is coming what does this add to RDS – VDI
In addition, please provide the log file from the client for further research.
Microsoft Remote Desktop -> About Microsoft Remote Desktop -> Send log via email
Hope it helps!
Thanks.
Dharmesh Solanki
TechNet Community Support

Multithreaded DB access from single partition

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