Time taken for HANA System to become available after a System restart for continuing transaction (in ERP on HANA)

Hi HANA Gurus,
Would like to know in a normal system replication based HA for SoH, without memory preload, after an automatic failover to the second node,in how much time HANA becomes available for the SoH(ERP) users to continue transaction.  Consider an ideal scenario with  512 GB appliance , with allocation limit of 490GB approx., considering normal 90% of first 64gb and 97% of every further 64GB memory on the single host.  Also consider a used memory of say 128 GB(indicating database size and considering no custom configuration for specific  tables preload  .Consider the save point is every five minutes as default and committed transactions are written to the log.  Host is replicated to second node using HANA System replication and with HANA automatic failover option. This means on first node failure the HANA system will be restarted on second node and data will be loaded to the memory based on the last state in the other node. As I understand the save points are loaded, logs are applied and database become available for users, the lazy load continues etc. Kindly answer me if anyone knows by experience how much time it takes from the failure detection  to next state of the system becoming available for user to start updating for example a Sales Order. Also like to know more about this start-up process to understand it better(for example the last save points are done by saving the changed pages, so time taken to load the last savepoint pages to memory, then applying transactions from last save point (last 4 minutes for example  before failing over etc).  The purpose is to understand whether the failover time from Primary to standby takes similar time like a traditional db  (for example db2) or more due to memory load time in HANA. At the same time I am aware of other options available to reduce the RTO by using memory preload, cluster solutions from vendors , OS like SUSE etc.
Thanks in advance.
Rajesh Vikraman

Hi John
My question is specific to a system failover  which is not replication with memory preload, where you require cluster software to do the failover. My question is in case of a automatic failover configuration using a standby node . For example gpfs / hana automatic failover option, where standby note starts hana, and  loads last savepoint , applies logs and then start lazy loading.
Regards

Similar Messages

  • Trying to sync wont finish with music...says waiting for owner-pc to become available

    trying to sync iphone...wont finish says music still needs sync..message is "waiting for owner-pc to become available"...what??

    Sync Your iOS Device with a New Computer Without Losing Data
    http://www.howtogeek.com/104298/sync-your-ios-device-with-a-new-computer-without -losing-data/
     Cheers, Tom

  • I just downloaded the newest update for mountain lion. After downloading and restarting for installation, I got a message stating that  the update cannot be installed due to an error. Yet when I check I have version 10..8.3 and safari version

    I just downloaded the newest update for mountain lion. After downloading any restarting for installation, I got a message stating that the update cannot be installed due to an error. Yet when I check I have version 10..8.3 and safari version 6.0.3, which the update was for.  Does this mean that the update is iinstalled and the message was incorrect?

    Brian Gallagher wrote:
    I just bought the Imac on Monday, which was placed on the shelf on Saturday. Its now Thursday and I have to update the machine. Heck I haven't even bought the printer or the new desk for all this stuff....ha ha.
    Good timing! Oh well, at least you shouldn't have to update again for a while. It will be nice kickstarting your Mac with the very latest System Update knowing any hiccups from 10.8.2 would have been ironed out if they were going to affect your workflow at all.
    Cheers and Happy Computing
    Pete

  • Is there a timeline for 4G service to become available on Getz Peak, southeast of Kingman, AZ?

    We were told back in April that 4G service was going to be available from the tower on Getz Peak, about 15 miles southeast of Kingman, AZ.  It still hasn't happened and I am wondering if there is an estimate of when this will become available.  Service where we live is terrible and we have a clear shot to the towers on Getz Peak.

    Tanisha:
    Taken today at 5:00pm while sitting at my desk, in my home, please find
    attach two photos, one of my LG G2 and one of my Jetpack, both showing the
    typical analog signal we receive in our location.  Not the 4G LTE service
    that Verizon claims we should be receiving.
    Greg
    Personal info removed as required by the Verizon Wireless Terms of Service.
    Message was edited by: Admin Moderator

  • Macbook Pro Retina display says "No batteries available" after legitimate system software update

    Issue Description
    On July 26, 2012 I placed an order with Apple store for the 15-inch MacBook Pro with Retina display with the following configuration (Order # W269108641 Serial# C02J52S9DKQ5):
    Processor 2.6GHz Quad-core Intel Core i7, Memory 16GB 1600MHz DDR3L SDRAM, Flash Storage 512GB Flash Storage
    It was delivered August 8, 2012. It cost me $3,265.16
    I have since equipped it with accessories like a wireless apple keyboard ($69), wireless mouse ($69), USB super drive ($79), VGA display adapter ($29), Ethernet Adapter ($29) and the excellent sleeve/pouch from Pack & Smooch GmbH (GBP60))
    It's so heavily configured because it’s my main workstation. I additionally bought and installed Parallels 8 so I can run Windows 8 in a Virtual Machine because I have a few things on Windows that I need to be productive. This setup has been a dream machine until a little over a week ago.
    In the one year since I bought it, I have had only 2 issues;
    • A case of display flickering that resulted after a system software update on August 28, 2013
    (Case ID 498560320 - not much help came from Apple Support but fortunately the problem went away a week later after another system software update)
    • A case of battery failure that resulted after a system software update on October 11, 2013
    (Case ID 516534003 - I have gone through all recommendations from Apple support as I will detail below)
    Symptoms after system software update
    • Battery Icon on status bar disabled with a message "No batteries available"
    • Battery not charging
    • LED on the Magsafe power adapter no longer show
    • Keyboard backlights no longer show
    • Notebook fan loud/noisy and permanently at high speed
    • Date and time reset to a date in the past at each restart
    • Notebook starts up the moment the Magsafe adapter is connected without waiting for power button to be pressed
    • An update for "MacBook Pro Retina Display SMC Update 1.2" keeps appearing in Software Update
    Recommendations from Apple Support
    • Perform SMC Reset (http://support.apple.com/kb/HT3964)
    (Done - no change in status)
    • Run Disk Utility
    (Done - no errors found)
    • Run Apple Hardware test (http://support.apple.com/kb/HT1509)
    (Done - no errors found, no change in status)
    • Visit Apple Store
    (Done - they confirmed no issue with Magsafe adapter. For a fee they are happy to change the battery if confirmed faulty and re-install the OS if the battery is not the issue but am uncertain that the OS re-install will resolve the issue because I have read online about a similar case where a re-install did not resolve the issue)
    • Check System Report/Hardware/Power
    (Done - Health Information/Cycle count:0, Battery installed: No)
    • Perform NVRAM Reset (http://support.apple.com/kb/HT1379?viewlocale=en_US)
    (Done - no change in status)
    Comments and additional Observations
    Please note the following;
    • All of the symptoms above appeared after a system software update on October 11, 2013
    • This update first appeared on October 10, 2013 but I was too busy to apply it especially because it required a system restart
    • The battery was fully charged when I decided to apply the update on October 11 morning after I got to work
    • Normally on full charge, the battery will typically deliver 3 - 4 hours depending on usage and up to 6 hours when idle
    • The said update was not interrupted or anything of the sort
    • On the day the symptoms were first observed when I first logged the case with apple, the system ran on battery while it performed the Apple Hardware Test while I was driving to the Apple support store on my way home even though the status bar was indicating "No battery available" 
    I make the following deductions solely based on my observations
    • An apple authorized system software update broke the system
    • The nature of the failure is communication related - the battery charging circuit and related systems are not getting the necessary instructions to function as they should (It's a known fact that rechargeable batteries do NOT die instantaneously, the total hours they run on full charge will gradually reduce over time as they degrade on use)
    • It’s possible the update is not being applied correctly because the item “MacBook Pro Retina Display SMC Update 1.2” is still in Software update after subsequent attempts to apply it
    • The high fan speed is nothing to do with high temperature or high processor load, according to the Activity Monitor utility the highest CPU utilization 1.9 – 4.7% is by kernel_task (PID 0) followed by activitymonitord at 1.8 – 2.2% (PID 481)
    • The symptoms match what an SMC reset should resolve according to Apple documentation
    • This is a known problem within Apple based on the documentation provided and the numerous similar cases reported online
    Summary;
    The system is running OS X 10.8.5
    I have provided this detailed documentation in the hope that someone who understands this system can say exactly what is going on. It's meant to be a dream machine but now you can hear the fan from across a large room, the battery doesn't charge and is in fact not recognized so I lose data if the Magsafe adapter gets unplugged, and I have to reset the system date each time I restart the notebook.
    I've used this notebook with utmost care for a little more than a year, this investment of over $3,500 could have bought 3 high end notebooks from DELL or HP but I chose Apple.
    I have suffered untold loss in productivity in the last 10 days since this issue occurred, I respectfully request Apple to fix my notebook.

    Issue Description
    On July 26, 2012 I placed an order with Apple store for the 15-inch MacBook Pro with Retina display with the following configuration (Order # W269108641 Serial# C02J52S9DKQ5):
    Processor 2.6GHz Quad-core Intel Core i7, Memory 16GB 1600MHz DDR3L SDRAM, Flash Storage 512GB Flash Storage
    It was delivered August 8, 2012. It cost me $3,265.16
    I have since equipped it with accessories like a wireless apple keyboard ($69), wireless mouse ($69), USB super drive ($79), VGA display adapter ($29), Ethernet Adapter ($29) and the excellent sleeve/pouch from Pack & Smooch GmbH (GBP60))
    It's so heavily configured because it’s my main workstation. I additionally bought and installed Parallels 8 so I can run Windows 8 in a Virtual Machine because I have a few things on Windows that I need to be productive. This setup has been a dream machine until a little over a week ago.
    In the one year since I bought it, I have had only 2 issues;
    • A case of display flickering that resulted after a system software update on August 28, 2013
    (Case ID 498560320 - not much help came from Apple Support but fortunately the problem went away a week later after another system software update)
    • A case of battery failure that resulted after a system software update on October 11, 2013
    (Case ID 516534003 - I have gone through all recommendations from Apple support as I will detail below)
    Symptoms after system software update
    • Battery Icon on status bar disabled with a message "No batteries available"
    • Battery not charging
    • LED on the Magsafe power adapter no longer show
    • Keyboard backlights no longer show
    • Notebook fan loud/noisy and permanently at high speed
    • Date and time reset to a date in the past at each restart
    • Notebook starts up the moment the Magsafe adapter is connected without waiting for power button to be pressed
    • An update for "MacBook Pro Retina Display SMC Update 1.2" keeps appearing in Software Update
    Recommendations from Apple Support
    • Perform SMC Reset (http://support.apple.com/kb/HT3964)
    (Done - no change in status)
    • Run Disk Utility
    (Done - no errors found)
    • Run Apple Hardware test (http://support.apple.com/kb/HT1509)
    (Done - no errors found, no change in status)
    • Visit Apple Store
    (Done - they confirmed no issue with Magsafe adapter. For a fee they are happy to change the battery if confirmed faulty and re-install the OS if the battery is not the issue but am uncertain that the OS re-install will resolve the issue because I have read online about a similar case where a re-install did not resolve the issue)
    • Check System Report/Hardware/Power
    (Done - Health Information/Cycle count:0, Battery installed: No)
    • Perform NVRAM Reset (http://support.apple.com/kb/HT1379?viewlocale=en_US)
    (Done - no change in status)
    Comments and additional Observations
    Please note the following;
    • All of the symptoms above appeared after a system software update on October 11, 2013
    • This update first appeared on October 10, 2013 but I was too busy to apply it especially because it required a system restart
    • The battery was fully charged when I decided to apply the update on October 11 morning after I got to work
    • Normally on full charge, the battery will typically deliver 3 - 4 hours depending on usage and up to 6 hours when idle
    • The said update was not interrupted or anything of the sort
    • On the day the symptoms were first observed when I first logged the case with apple, the system ran on battery while it performed the Apple Hardware Test while I was driving to the Apple support store on my way home even though the status bar was indicating "No battery available" 
    I make the following deductions solely based on my observations
    • An apple authorized system software update broke the system
    • The nature of the failure is communication related - the battery charging circuit and related systems are not getting the necessary instructions to function as they should (It's a known fact that rechargeable batteries do NOT die instantaneously, the total hours they run on full charge will gradually reduce over time as they degrade on use)
    • It’s possible the update is not being applied correctly because the item “MacBook Pro Retina Display SMC Update 1.2” is still in Software update after subsequent attempts to apply it
    • The high fan speed is nothing to do with high temperature or high processor load, according to the Activity Monitor utility the highest CPU utilization 1.9 – 4.7% is by kernel_task (PID 0) followed by activitymonitord at 1.8 – 2.2% (PID 481)
    • The symptoms match what an SMC reset should resolve according to Apple documentation
    • This is a known problem within Apple based on the documentation provided and the numerous similar cases reported online
    Summary;
    The system is running OS X 10.8.5
    I have provided this detailed documentation in the hope that someone who understands this system can say exactly what is going on. It's meant to be a dream machine but now you can hear the fan from across a large room, the battery doesn't charge and is in fact not recognized so I lose data if the Magsafe adapter gets unplugged, and I have to reset the system date each time I restart the notebook.
    I've used this notebook with utmost care for a little more than a year, this investment of over $3,500 could have bought 3 high end notebooks from DELL or HP but I chose Apple.
    I have suffered untold loss in productivity in the last 10 days since this issue occurred, I respectfully request Apple to fix my notebook.

  • Becomes "Available" After Sleep

    Hello,
    I recently started using iChat 2.1 with Panther. Whenever I put an Away Message on and my iBook falls asleep, upon waking up my status switches to Available. In Preferences, under "When I Return To My Computer" I have "Keep My Status As Away" checked but that doesn't seem to be happening. Anyone else have this problem or know how I could fix it?
    Much Thanks,
    -Matt

    Hello mac032,
    I followed your advice ... Any other ideas?
    Some you might consider:
    -Did you quit iChat AV before you deleted the .plist?
    -Have you selected "When I quit iChat, set my status to Offline" ?
    -Have you done your Mac OS X maintenance recently?
    -Are you logged onto AIM with another computer or app (like AIM for Mac) at the same time?
    -Are you connected via wireless? Have you tried connecting via Ethernet cable to see whether the problem goes away?

  • Why isn't Hard Disk space becoming available after I delete files?

    My wife filled up her MacBook's hard disk to the point where she only had 300 or so MB of storage space left. I transferred about 32GB of movies and photos onto an external disk and deleted the files off of the MacBook. Those files are no longer on the MacBook and they are on the hard disk. However, there is only about 14GB of free space on her MacBook now. What happened to the other 18GB of space that should have become free? Is there something else I need to do to free up this space? I made sure to empty the trash after moving the files into the trash.
    Computer information:
    OS: OS X 10.8.2 Mountain Lion
    Processor: 2.26 GHz Intel Core 2 Duo
    Memory: 8GB 1067MHz DDR3
    Graphics: Nvidia GeForce 9400M 256MB
    Model: MacBook, 13-inch, Late 2009
    Model Identifier: MacBook6,1
    Hard Drive: Toshiba MK2555GSXF with 250.06GB Capacity

    You might try OmniDiskSweeper to get a better idea about what's eating up the space. I wold also reset the pram
    Resetting NVRAM / PRAM
    Shut down your Mac.
    Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    Turn on the computer.
    Press and hold the Command-Option-P-R keys before the gray screen appears.
    Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    Release the keys.

  • Keyboard becomes unresponsive after using keyboard shortcut for Spaces?

    Hi, I'm using Mac OS X 10.6.2 and have the most annoying bug! I always use spaces, and sometimes after using the keyboard shortcut to a space, my keyboard becomes completely unresponsive and I have to log out and log back in again!! Any known fixes? It's happening on my Macbook and Mac Mini!
    Thanks

    Check this thread (http://discussions.apple.com/thread.jspa?threadID=2161076&start=0&tstart=0) for the exact issue. Seems widespread.

  • HT201250 My hard drive had to be replaced. I am restoring it with my time machine back up, but it is still (after 30 minutes) "looking for other sources" is this normal?

    My hard drive was replaced. I am using time machine to restore. It is about 40 minutes into the procedure and the computer is still "looking for other sources" is this normal?

    First go to iPhoto Preferences, look in both General and Advanced tabs to make sure that things are set to import from camera into iPhoto.
    Then if that doesn't help, connect the camera and open Image Capture in your Applications > Utilities folder and see if you can use Image Capture to reset the import path from the camera to iPhoto.
    Image Capture: Free import tool on Mac OS X - Macgasm
    Message was edited by: den.thed
    Sorry John, I didn't see your post when I clicked the reply button. Dennis

  • Time machine can't mount disk ,hard drive,after its been formatted for windows

    i want to use time machine but it can't mount disk as it has been used with windows

    You will need to repartition and reformat the drive for use with OS X:
    Drive Partition and Format
    1. Open Disk Utility in your Utilities folder.
    2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
    3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Apply button and wait until the process has completed.
    4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
    5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.
    6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.

  • After using iphone 4s for some time it gets hot, is it normal?, after using iphone 4s for some time it gets hot, is it normal?

    after using it for like 10 minutes it gets really hot

    If you think there is a problem with your Device, then take it in to the Apple Store or AASP, and get them to check it for you...

  • Elgato video to USB has become unreliable after shutdowns and restarts

    I have Yosemite 10.10 on an early 2009 iMac, and an Elgato Video capture device with latest software (1.1.5)
    The messages "Device could not be initialized" and also "Please connect your Elgato Video capture hardware to any USB 2.0 port" come up after I have had a shutdown and restart.
    For 2 or 3 years i have operated this system with no trouble, but as the iMac software became upgraded, and also the Elgato S/W upgraded, the problem has come up, so now I am reluctant to shut down.  However, there are times it must be, such as when the power company shuts service down for maintenance - happens a lot lately.  I have tried different ports, and done the unplug and replug routine, but it takes dozens or even hundreds of attempts until one time it works.  then i have to be sure not to "quit" after a recording session, or the problem comes up all over again. Also I tried using a USB hub, with no success.  Also, I have tried to reset of the USB bus routine (Command-Option-P and R keys during startup) with no success.

    Get rid of CleanMyMac and DivX. Add much more RAM. You don't have nearly enough for all that you are trying to load.

  • Version 9.0.1 bookmarks and history not available after crash and restart

    I am getting this msg pop-up after Firefox locks after attempting to use Flash. It also states that some security software can cause the problem.

    If the bookmarks and history are not available, probably places.sqlite in the profile got damaged. Close Firefox, open the profile directory, delete places.sqlite, then restart Firefox. The bookmarks should be restored from the bookmark backups.

  • Waiting for printer to become available - OSX 10.8.4

    Hi, I foolishly allowed the HP printer updates on my imac running Mountain Lion, 10.8.4.  I learned not to do that on Snow Leopard but suffered a lapse resulting in 'waiting for printer to become available' and when it is reset, it only prints every other page.
    In Snow Leopard I could get rid of it by going into system - library and deleting HP; the status quo was restored.  I cannot seem to do that in Mountain Lion and its really a pain!
    I've tried deleting and reloading the printer to no avail.  It's an HP 2550.
    Can anyone help?
    Thanks

    I don't think I did anything other than plugged the printer into the USB and more or less let it do its own thing, i.e. I selected it off the list and used the driver that was built into Snow Leopard - to be honest I didnt really think about it as it all just happily worked in the Apple fashion.
    All was fine for some time until a standard Apple update included HP printer updates, which I installed but then found the issue that the printer would print one job but no more until powered down and back on, when again one job could be done and so on.  I found it referred to here and elseweher and it seemed a common problem that was cured by going into Library/extensions and deleting all HP files.  I then avoided updating the printers and if ever it did slip through, I could readily get rid of problem.
    This is one of the discussions I looked up back then https://discussions.apple.com/thread/2649214?start=0&tstart=0 but there do seem to be plenty of others.
    I upgraded to Mountain Lion three or four months ago and didnt need to do anything with printers as it just happily continued to work until a couple of weeks back when I inadvertently let the HP update slip through and found the printer 'waiting to become available' after each print job.  I then attempted the method I had used for Snow Leopard but found the system is different.
    I have got into the printers folder and deleted the HP files as well as resetting the printers in printer preferences but every time I plug the printer back in it seems to find the updated driver from somewhere!  That then appears in the printers folder.
    I'm afraid I don't know about the protocol etc., although I'm willing to give anything a try.
    Thanks again

  • Will iOS5 become available for 2nd generation iPod Touch?

    I thought iMessage would be the perfect solution for texting while I am abroad, only to find that 2nd generation iPod touch isn't compatible?  That's ridiculous.  Anyone know if it will become available??

    same as for iphone3G which is hardwareside comparable to the 2nd gen touch.
    iOS5 needs 256MB of Ram to start with, as well as certain features in the CPU that were not available before the iphone 3GS and the iPod touch 3rd gen.
    So your device is now maxed out . Enjoy it as it is.

Maybe you are looking for