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OS migration for 7.01 SAP Netweaver portal - options to reduce export/import time?

Former Member
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Hello Gurus,

We have to do an OS migration for an SAP Netweaver 7.01 portal landscape.

Source - HP-UX

Target - Linux

CPU - 8

RAM - 64GB

DB - Oracle 11.2.0.2

DB Size - 250GB

Instances - CI + 5 DIs

We tried to take do a mock, and the test export using SWPM with default options took around 14hrs. Since we're dealing with 7.01, SWPM don't support table splitting, so we had to go with default options.

We have not yet tested the import, but assuming it is going to take more than that plus have to re-install 5 dialog instances after migration it is going to take lot of time.

From the DB export log:

INFO: KMC_DBRM_CONTENT exported (250060 rows) --> about 4 hours

INFO: WCR_USERNODELOGON exported (140152955 rows) --> about 2 hours

INFO: WCR_USERNODESTAT exported (140153038 rows) --> about 3 hours

INFO: WCR_WEBCNODESTAT exported (126607380 rows) --> about 1,5 hours


Do we have any other options to do the migration of 7.01 portal system (like migrating DB with O2O and then do only java content export/import via sapinst)?

Regards,

Abhilash

Accepted Solutions (0)

Answers (3)

Answers (3)

Former Member
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What Java are you using? The HP-UX JDK or SAP JVM? I suspect your problem is jload, the program used to create the Java export. Since your dataset is so large, the default JVM options of jload won't be sufficient and most time will be spent in garbage collection. Look in sapinst_dev.log of SWPM what JVM parameters are used. You can use control.xml to override the default parameters.

former_member193518
Active Participant
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Hi Abhilash,

O2O is an option. How long does an export take?

Look for notes regarding system copy performance.

They may provide some help with options.

Example:

1875778 - Performance Optimization for System Copy Procedures

Regards,


Darryl

Former Member
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Hi Darryl,

Usually when we take the export of a JAVA system, it doesn't contain the info of application servers.

So wonder how does it work with OVO + JAVA content export.

I mean, the OVO DB export/import will have all the details as such, and the JAVA content export will take the details of only CI (we have 5 more app servers).

We have looked at the DB parameters mentioned in the note, but most of the points in the note (especially R3load) are relevant in case of 7.02+,, right?

Regards,

Abhilash


former_member193518
Active Participant
0 Kudos

You can use SWPM to perform the DB specific backup/restore method for Java system copy.

See here: https://websmp203.sap-ag.de/~sapidb/011000358700006457682006E

The difference is that you are changing the database platform and the application server platform, so tie in this process with the Hetero System Copy process (OS/DB Migration).

The R3load parameters/options are kernel specific.  If you're using the latest supported kernel you would have the same capabilities as 7.02.

Regards,


Darryl

Former Member
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Hi,

The JAVA splitter is available only since NW 7.02 (NW 7.0 EHP2).


Can you please let me know what version os SWPM are you using...


Thanks

Rishi Abrol

Former Member
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Hi Rishi,

Yeah, i am aware that JAVA splitter is supported only from 702. We actually managed to split the table by copying sltools from a 702 system. But SAP said that it is not a tested approach and we shouldnt use it.

We used label: IND:SLTOOLSET:1.0:70SWPM:*:HPUX_IA64:*. I know there is SWPM10SP04, but that doesn't really make much difference, right?

Regards,

Abhilash

Reagan
Product and Topic Expert
Product and Topic Expert
0 Kudos

14 hrs to export 250 GB of data is not an acceptable duration.

Do you have any other systems running on the source system in addition to this Java stack ?

Update the statistics of the database to see whether it helps.


Regards

RB