Live cache backup question

Hello Experts,
Iam new to Livecache and AP0 and was trying to understand the process of backups reason i need to perform complete SCM 7.0 systemcoopy . In past i have done system copies and well aware of the procedures .
Here it goes Presently we are on SCM 7.0
Question :--> I see our Livecache is installed on one machine and AP0 on another machine. Iam not aware how Livecache
was integrated with AP0.
Iam trying to understand how to take backup of livecache and then restore the same in Target.
In LC10
LCA --> ProblemAnalysis --> Logs --> DBA History
i can see that the live cache backups are in getting successfully everyday.
I see that Backup Label as DAT_000000<xxx> and Backup Template as bac214<xxx>.
Where can i see this Backup Template defined ( the path ) .
Can someone provide an insight regarding the live cache backups.
Checked SAP Note 457425 .
--> After system copy how would i integrate Livecache and AP0 .
Thanks in Advance.
Medha

Hello Medha,
1.
a)
Please review all recommended steps in the SAP note:
886103 System Landscape Copy for SAP SCM
when you are planning to do the SCM system copy.
For SAP liveCache documentation please see the SAP note 767598.
b)
SAP link:
SAP liveCache technology
-> Best Practices for Solution Management: mySAP SCM
review:
"Checklist for Recovery of SAP APO liveCache >= 7.4"
< It will be helpful to practice the steps of the document on the test liveCache instance first >
2.
Sessions: http://maxdb.sap.com/training/
=>
Session 2: Basic Administration with Database Studio
Session 3: CCMS Integration into the SAP System
Session 11: SAP MaxDB Backup and Recovery
Those sessions will help you. If you still have some questions after that => update the thread.
4.
Took classes for the MAXDB database administration or get the SAP consulting support.
Regards, Natalia Khlopina

Similar Messages

Live cache backup

Hi Experts,
I am beginner to SCM and Live cache technology.
I have sucessfully installed SCM 5.0 and Live cache 7.6.29 on two different HP-Ux 11.23 servers.
My first requirent is to take live cache backup. But there is no tape drive connect to any of the server,
local file system assigned as backup space, accordingly I have successfully taken online backup of SCM database by modifying entries like backup_dev_type to tape in init<SID>.sap.
Know I am facing a challenge to take live cache backup on local file system , infact dont know how to take online live cache backup.
Another question is database manager gui is needed in unix environment, if yes please let me know the procedure how to configure this as In transaction lc10 upon double clicking database manager gui system generating error.
Please help to solve the above two problems.
Thanks & Regards,
Maqsood Ahmed

Hi Ahmed (no own SDN account? ).
I'd like to make a few remarks on this:
1. Backup to local filesystem w/o moving it to another location afterwards is next to useless. What happens when (when not if!), the local disk crashes? What backup can you use then?
2. You can perform liveCache Backups from DB13C/DBACockpit after you've integrated the liveCache instance (DB59).
3. If you like to administer the liveCache via DBMGUI - just install DBMGUI on your Windows Workstation and connect remotely to the liveCache. Actually this is the way how it was thought up.
For detailed information how to work with liveCache I propose you check:
The documentation [Backup/Recovery SAP Library - Database Administration in CCMS: SAP liveCache Technology|http://help.sap.com/saphelp_nw70/helpdata/EN/e9/dc1c3e46903b2ee10000000a114084/content.htm]
The SDN Content on liveCache [https://www.sdn.sap.com/irj/sdn/livecache]
The SCM Technology pages in the SAP Service Marketplace [https://service.sap.com/scm] -> SAP SCM Technology
Good luck,
Lars

Database ID is showing different host name in live cache backup

Hello All ,
While triggering the live cache backup , the database id is showing different one.
i have build the system using cloning method from production. the server name is showing correct one but database id still showing the source system.
Please help me to fix the issue . Thanks in advance .
Backlog is pasted below.
>backup_start LCD_DB_Backup
OK
Returncode              0
Date                    20140804
Time                    00081900
Server                  *********(showing correct hostname)
Database                LCD
Kernel Version          Kernel    7.9.08   Build 008-123-247-140
Pages Transferred       913824
Pages Left              0
Volumes                 1
Medianame               TH_LCD_DB_Backup
Location                /sapdb/LCD/backup/LCD_DB_Backup
Errortext
Label                   DAT_000000820
Is Consistent           true
First LOG Page          4981
Last LOG Page
DB Stamp 1 Date         20140804
DB Stamp 1 Time         00081900
DB Stamp 2 Date
DB Stamp 2 Time
Page Count              913803
Devices Used            1
Database ID             xxxxxx:LCD_20140803_103951 ( wrong database ID: xxxxx)
Max Used Data Page      0
Converter Page Count    991
Regards,

Hello,
I recommend you to create the SAP message to BC-DB-LVC component and get SAP support.
- How have you build the system using cloning method from production?
- What note/documens did you follow?
Regards, Natalia Khlopina

Live Cache Backups

Any suggestions on building a backup strategy for Live Cache,
ie; What to backup, what medium works best, how often etc.
ERP/SCM platform is iSeries/AS400

I suggest you backup the livecache as often as you backup your SCM system.
The "best working medium" can be everything from a disk to tape to storage, everything that´s supported by the operating system works. I depends on what size your LC is and how familiar you are with different mediums.
Markus

Data movement from R/3 DB to APO DB and to Live cache

Dear APO Experts,
I have few questions on live cache and how it works, I understand that Live cache is memory resident database. below are my questions.
1) What sought of data move from R/3 DB to APO DB and then to Live cache DB
2) When data moves from APO DB to Live cache, till how much duration that data stays in live cache
3) And how does data gets pulled in to live cache from APO DB
4) Why do we require live cache logs while data never gets commited to hard disk
5) Do we ever add a datafile to Live cache DB
any info that you provide on this will be really helpfull to me
Thanks,
Chetan

Hello Chetan,
As you know, itu2019s MAXDB/liveCache forum.
What is the version of your system?
The is documentation available at:
 SAP liveCache technology
< Please review document u201CWhat is SAP liveCache technology?u201D >
Sap documents at service.sap.com/scm -> Technology:
u201CliveCache overviewu201D and u201CIntegration overviewu201D
For SAP liveCache documentation also see the SAP note 767598.
Go to SAP link Best Practices for Solution Management: mySAP SCM at SAP liveCache technology ...
And Review the document u201CManage APO Core Interface in SAP APO (3.x) / mySAP SCM (4.x/ 5.0)u201D
1. As you saw in the reference documents the data transferred from the connected R/3 system to APO.
And the transactional data could be uploaded to the liveCache, if you downloaded them
to the APO database cluster tables first. This procedure steps are running during the
system upgrade < for example, from SCM 5.0 to SCM 7.0 ) u2013 report /SAPAPO/OM_LC_UPGRADE_70 steps. Or you want to migrate the
liveCache to another operating system or convert your system to Unicode,
and therefore you want to back up the liveCache data first so that you
can reload it into the liveCache afterwards - SAP Note No. 632357.
2. Could you collaborate more on this sentence. Could you give examples?
3. u201CAnd how does data gets pulled in to live cache from APO DBu201D
 The data are not pulled from the APO DB to liveCache.
 When you changed the APO data on the system the LCA procedures have been called from ABAP. The objects stored in the class containers in liveCache can be accessed and manipulated only via LCA routines. The registration of the LCA routines is done automatically when the liveCache is started by the LC10. The LCA procedures in the LiveCache are written in C++
and shipped to the customers as binary LCA libraries(LCA build) together with the LiveCache.
< See more details in SAP Note No. 824489 or 1278897 as of SCM 7.0 >
4. See the SAP notes:
 869267 FAQ: SAP MaxDB LOG area
 1377148 FAQ: SAP MaxDB backup/recovery
5. You could run the quicksizer & estimate how much data you are planning to have in liveCache.
 Also the amount of data could be increased by the creation of the new data in APO by users
 Or another reason u2026
 In general you will add the datavolume to solve or prevent the DB_FULL issue,
 See u201C17. What do I do if the data area is full? u201C in SAP note 846890.
Thank you and best regards, Natalia Khlopina

Live cache Recovery.....

Hello all,
This is related to SAP DB version 7.4.3.32 and it is running on Windows. My DBM GUI version is 7.6.00.12. On the recovery tab of the DBM GUI there is a option called "Recovery with Initialization". I have used this option to recover my SAP DB database and it was always successful. I used this option to intialize the existing database with a good full backup. This is a new option in 7.6.00.12 DBM GUI. It was not there in 7.4.3.30 DBM GUI. Though it is not a good option all the time but it is very good if your database is crashed and if you have latest good full backup then you can use this option for recovery.
My question is that I have never tried this option (Recovery with Initialization) on our Live Cache database (SAP DB instance installed as Live Cache on Solaris). I do see this new option in DBM GUI in 7.6.00.12 DBM GUI as DBM GUI is same for both type of database.
Is it possible to use this option for our SCM 4.0 Live Cache in same way I have used it for SAP DB database. It will be a very good option for Live Cache if we have one good backup and Live Cache is crached then we can use the latest full backup to restore the Live cache.
Please let me knwo if anybody knwos about it or have tried it.
I will really appreciate your help.
Thank you.
Sume

Hi,
with liveCache it's a little bit different as opposed to an OLTP instance. The most imporant difference being that when you're using liveCache, there's always another DB instance aswell, the SCM/APO instance. The consistency between these two instances is of the utmost importance. Therefor, after every recovery of liveCache, you should run certain consistency reports to make sure the data in liveCache and SCM DB are consistent.
A normal liveCache recovery would look like this:
- you've got a (successfully saved) full data backup
- you've got several log backups
Using the above backups, you can minimize the loss of important data when experiencing crashes.
In your first case, you would recover using the last full data backup and could then continue to recover all available logbackups (either manually or automatically created).
> You could do a recovery without initialization here aswell, because all changes should still be on the logvolumes.
In the second case, you would just recover + init the data backup from Jan 1st.
In BOTH cases, you should run the consistency reports afterwards!
Regards,
Roland

Migration and Live Cache Doubts

Hello,
I need to migrate Windows 2003 Server 32-bit/MAXDB 7.6.0.035 for Windows 2008 Server 64-bit/MAXDB 7.6.0.035 and have doubts:
1 - What is the best way to accomplish this migration? Via Sapinst? If there is another way, how?
2 - In a note "1409895 - Windows 2008: TCP / IP communication MaxDB / liveCache is slow," reports to
upgrade to a new version of SAP MaxDB / liveCache. If I upgrade to MAXDB7606_14-20001288.SAR (MaxDB 7.6.06.14
Server Package) already solved?
    I'm confused about this because in the Live Cache "My Company's Application Components" SAP-SCM "-SAP
SCM 5.0 Component-by-Entry SAP liveCache the last SAP MaxDB / liveCache 7.6.03.12 Security Patch
is MLCSEC7603_12-10003432.SAR, but the version of MaxDB is 7.6.0.035
Sorry my questions but don´t know very about MAXDB.
thank´s for any help

Hello Emerson Eduardo do Espirito Santo,
1. It will be best for customer to create the SAP message and get the expert SAP support.
2. Please check and answer on the questions to get clear on your project first:
What is the version of your system which is planning to be migrated?
      SAP ECC 6.0 or SCM 5.0 ?
What MAXDB software do you have on the Windows Server 2003 32-Bit?
    Post output of the command:
      sdbregview u2013l
3. u201CI don´t know if I need the Live Cache.u201D
->Why you was writing about the liveCache?
->Could you ask the customer what versions of the systems they have in the landscape?
->If you login to the SAP ECC 6.0, top menu: system->status
What is the database of the system?
4. Please see the SAP notes 1014782 and 960769, if the customer have SAP ECC6.0/MAXDB 7.6 on Windows Server 2003 32-Bit and want to migrate SAP ECC6.0/MAXDB 7.6 on Windows 2008 Server 64-bit version.
Customer can use backup and recovery to perform a homogeneous system copy of a MaxDB database instance, SAP Note
129352. For more information about the procedure, please, see the installation documentation about the homogeneous system copy.
5. Please give customer the reference to the SAP note:
              1020175     FAQ: MaxDB installation, upgrade or applying a patch
in case of question on how to apply the MaxDB kernel patch.
Regards, Natalia Khlopina

Live Cache Crashed

Hello Guru's,
My Production system Live cache has been crashed. I am trying to restore the last backup which was taken yesterday night 8:00pm. I am able to restore the Live Cache however unable to restore the logs to recover PIT, as it is complaining about log sequence. I am not sure about finding the sequence number it is asking for.
Crash happened today morning 7:00am. Backup restored last night 8pm and trying to do point in time recovery. Backup has been restored and trying to apply logs.
Note;- log backup is for every 2 hours, so after the complete backup last night, we have log backup's for every 2 hours and trying to apply the same.
Kindly suggest what can be done..
Thanks,
Sravanthi.

Hello,
1.
You have questions how to solve the liveCache issues on the PROD system
=>
As already recommended Lars, please open the SAP message to the component BC-DB-LVC to get SAP support.
It will be helpful to know the SCM/APO version, liveCache version and more details about the liveCache crash.
2.
In case you had the liveCache crash due the hardware problems, and the data or log volumes or liveCache configuration files are corrupted
=>
solve the hardware issues first or use another server
Follow the SAP note to create the liveCache instance:
    457425     Homogenous liveCache copy using backup/restore
   You need to create/initialize the liveCache instance for restore or run the Restore with initialization, restore the successful databackup, then leave the liveCache in admin status and continue the restore of the incremental databackup/logbackups in sequence if needed.
*More information could be found in the SAP notes:
1377148     FAQ: SAP MaxDB backup/recovery
869267                     FAQ: SAP MaxDB LOG area
820824          FAQ: SAP MaxDB/liveCache technology
Thank you and best regards, Natalia Khlopina

Unable to delete Order does not exist in live cache but in table POSMAPN

Hi Experts,
We are facing an issue where purchase order is not available in live cache (which means no GUID) but exists in database table POSMAPN. We have tried to delete it using standard SAP inconsistent order deletion program and also using BAPI BAPI_POSRVAPS_DELMULTI but not able to delete it.
Can anybody suggest a method by which we can get rid of this order from the system.
Thanks a lot.
Best Regards,
Chandan

Hi Chandan,
Apologize me for taking your question in a wrong perspective. If you want to delete the same then you need to Re-CIF the order from ECC so that it would come and sit in Live Cache. Once done, try using the BAPI.
If you are not successful with the above approach try running the consistency report /SAPAPO/SDRQCR21 in APO system
so that it first corrects the inconsistency between ECC and APO (Live Cache + DB tables) and then use the BAPI to delete the PO.
Not sure if you have tried this way. If this does not solve your purpose you need to check SAP Notes.
Thanks,
Babu Kilari

In which table is the Live cache data stored?

Hi experts,
I am new APO .Can anyone let me know in which database table will the Live cache data be stored?
Thanks in advance
regards
Ashwin.

Hello Ashwin,
the idea of the liveCache is to haev data permanently and quickly available without having to read/write from/to database. Therefore, the liveCache is NOT a physical database, it is a program in C++ that simulates a database and holds the data in the memory.
However, it does need so called liveCache-anchors which are saved on the database, and which are similar to pointers.
However, you can extract data from liveCache using BADIs or by creating a datasource on a planning area (for DP and SNP), manipulation can also be done only by BADIs or sophisticated programming (which basically uses RFCs).
I hope this answers your question.
Regards,
Klaus

Some concern about Live cache Homogeneous System copy

Hi All,
I need to do the Homogeneous system copy SCM 5.0 / Live cache 7.6.00 on AIX. Following are the Source and target System SID for Live cache. Moreover I had check the respective SAP note 457425 and 877203 but still having some concern.
Source System
Live cache SID           =      SCD
Live cache user ID      =      SAPSCD
Live Database instant software owner = scdadm
Live cache Data Size      = 8 GB ( 4 Data volume / 2 GB each / auto extend off)
Target System
Live cache SID           =      SCT
Live cache user ID      =      SAPSCT
Live Database instant software owner = sctadm
Live cache Data Size      = 4 GB ( 2 Data volume / 2 GB each / auto extend off)
For same I having following concern.
1.     Since there is difference between source system and target system size / data volume number what action I need to take on target system. Do I need to add two more data volume into the target system?
2.     After complication of database restore on target the system do I need to change the Live cache user ID (i.e. SAPSCD to SAPSCT)?
or
It is just fine to change the log on data in Integration tab in LC10.
Please let me know some more information on same.
Thanks,
Harshal

Hello Harshal,
"1. Since there is difference between source system and target system size / data volume number what action I need to take on target system. Do I need to add two more data volume into the target system?"
Please pay attention to the SAP note :: 457425    Homogenous liveCache copy using backup/restore
Please update the thread withy additional information ::
What is the version of the source liveCache? What is the version of the target liveCache?
How much data do you have in the source liveCache?
And you need to have the size data area of the target liveCache to be able to restore the databackup created in the source liveCache.
So by the size of the data volumes in the source liveCache, it's not clear how much data you have.
"2. After complication of database restore on target the system do I need to change the Live cache user ID (i.e. SAPSCD to SAPSCT)?"
Please review the SAP note 877203.
You could rename the user SAPSCD to SAPSCT using the SAP note 877203 steps
OR
You could have the user SAPSCD in the target liveCache as Standard liveCache user &
After you run the homogenous liveCache copy using backup/restore procedure you need
to change the LCA/LDA/LEA connection with user SAPSCD on target system and
set the user SAPSCD to the user containers ( please see the SAP note 616555 for more details )
Before to restart the liveCache in LC10.
PS: Please pay attention about the value of the liveCache parameter _UNICODE.
      What are the values of this parameter in the source & target liveCache?
Thank you and best regards, Natalia Khlopina

Live Cache DBM error

Hi,
Our Live cache log backup runs to tape, sometimes this may fail and our log area starts increasing, when we try to take a log backup uisng DBMGUI or DBMCLI we get below error.
ERR
-24988,ERR_SQL: SQL error
-104,DBM command impossible at this time
Can you please help how to resolve this ?, since it is something critical for us during our business close end,
Thanks,
Chetan

> Our Live cache log backup runs to tape, sometimes this may fail and our log area starts increasing, when we try to take a log backup uisng DBMGUI or DBMCLI we get below error.
Hmm... that is usually not the way it should work - I assume you're employing a third party backup tool here?
If not, than you definitively shouldn't create the log backup directly to tape.
Instead you should use the AUTOLOG backup to the filesystem and afterwards archive the backups to the tape.
> ERR
> -24988,ERR_SQL: SQL error
> -104,DBM command impossible at this time
Well, it means what it says: for some reason (e.g. there is already a backup running) you cannot start the backup right now.
For more detailed answers we need to see the log files of the database.
> Can you please help how to resolve this ?, since it is something critical for us during our business close end,
Hmm... what has your liveCache to do with your business (month?) end closing??
Anyhow, if something is important1, critical2 or urgent3 then the forum might not be the place to go.
In such cases always open a support message - there you've got guaranteed response times.
regards,
Lars
please don't blame me for adding the numbers to the three bad words above - this was the only way to get around the awkward content filtering of this forum
Edited by: Lars Breddemann on Sep 4, 2009 9:47 AM

BW reporting from APO live cache

It has been 4 years since I have worked on a BW/APO project. Back then, I know that in APO you could backup live cache and then use the backup as the datasource for reporting in BW. Is this still the same or can you go directly against live cache now.
Thanks,
Dean

Hi Somnath,
Can you pl. give me the reference where running reports from internal APO-BW directly is recommended by SAP?
We have a similar situation with our client. It is possible to do reporting from APO cubes directly, but we are not sure since I found this in once of the SAP presentations
SAP recommends for customer to prepare separate systems for APO and BW.
Reasons
The APO system will be tuned for optimal APO functionality performance such as calculating forecasts in demand planning or deriving ATP values
The BW system will be tuned for optimal query performance in order to return results in a timely fashion.

Time Machine doesn't do External HD to External HD Live parallel backups...

I didn't know where else to post this...
I have 12GB of external storage devices attached to my MacBook Pro 17. They are a variety of sizes, and I'm trying to figure out how to use some for storage, and the rest for backing up those storage drives. I don't think Time Machine supports this...
so, I'm looking for a Time Machine styler backup software recommendation that also allows you to have live parallel backups from one external drive to another. I've checked out all the obvious things - SuperDuper, Data Backup, Backup, and others. They only support backups of the INTERNAL hard drive.
If that doesn't work, I'll have to resort to scheduled incremental back ups, but again, I can't find software that will do external to external backups.
Does anyone know of a Backup utility like Time Machine but for EXTERNAL Drives.

SFjoe1966 wrote:
I didn't know where else to post this...
I have 12GB of external storage devices attached to my MacBook Pro 17. They are a variety of sizes, and I'm trying to figure out how to use some for storage, and the rest for backing up those storage drives. I don't think Time Machine supports this...
Time Machine can back up external drives, if they're formatted HFS+, along with your internal, but only to a single volume. So unless you have one of those big enclosures that you can configure as a monster hardware +Concatenated RAID set,+ Time Machine may not be your whole solution.
so, I'm looking for a Time Machine styler backup software recommendation that also allows you to have live parallel backups from one external drive to another. I've checked out all the obvious things - SuperDuper, Data Backup, Backup, and others. They only support backups of the INTERNAL hard drive.
I don't use SuperDuper, but I'd be very surprised if it can't back up external HDs. The similar CarbonCopyCloner, which I do use in addition to Time Machine, can. But it only backs-up one volume at a time, so you'd need one "task" for each. Depending on the sizes, it could back up, say, two 500 GB disks to a single 1 TB drive (I don't know offhand if it would have to be partitioned, but that would probably be wise).
With that much data, your best bet may be a combination: Time Machine for your OSX volume and one or more externals (probably the ones with the most changes), and CCC, SD, or others for the other volumes.
You might want to review the Time Machine Tutorial and perhaps browse Time Machine - Frequently Asked Questions (or use the link in *User Tips* at the top of this forum).
Also see Kappy's post on Basic Backup, complete with links to the web sites of each product.

Approach when the used Live cache data area crosses the threshold

Hi,
Could any of you please let me know the detailed approach when the used Live cache data area crosses the threshold in APO system?
The approach I have as of now is :
1) When it is identified that data cache usage is nearly 100%, check for hit rate for OMS data in data cache in LC10 .Because generally hit rate for OMS data in data cache should be atleaset 99.8% and Data Cache usage should be well below 100%.
2) To monitor unsuccessful accesses to data cache choose refresh and compare value now and before unsuccessful accesses result in physical disk I/O and should generally be avoided.
3) The number of OMS data pages (OMS Data) should be much higher than the number of OMS history pages (History/Undo).A ratio of 4:1 is desirable. If OMS history has nearly the same size as OMS data, use Problem AnalysisPerformanceOMS versions to find out if named consistent views (Versions) are open for a long time. Maximum age should be 8hrs.
4)If consumption of OMS heap and data cache is large, one reason may be a long running transaction simulation that accumulates heap memory and prevents the garbage collector from releasing old object images.
5) To display existing transactional simulations in LC10,use Problem AnalysisPerformanceOMS versions and SM04 to find out user of corresponding transaction and may be required to cancel the session after contacting user if the version open for long time..
Please help me by providing additional information on the issue.
Thanks,
Varada Reddy.

Hi Mayank, sorry, one basic question - are you using some selection criteria during extraction? If yes, then try extraction without the selection criteria.
If you maintain selection based on, let's say, material, you need to use the right number of zeros as prefix (based on how you have defined the characteristic for material) otherwise no records would be selected.
Is this relevant in your case?
One more option is to try to repair teh datasource. In the planning area, go to extraction tools, select the datasource, and then choose the option of repair datasource.
If you need more info, pls let me know.
- Pawan

Live cache backup question

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