Rebuilding LiveCache

[Former Member]

Is it possible to rebuild LiveCache after a system error or in a disaster recovery situation. The DR is on hardware that is in a different data centre and its DB2 database is running in a warm state accepting updates from the live database. I am interested in being able to rebuild the LiveCache rather than keeping the MaxDB in synch.

[former_member229109]

Hello Michael,

Please provide more information about your disaster recovery situation.

-> What is the liveCache version? ( output of the dbm command 'show version')

-> What is the version of APO ( SP?) ?

-> Are you assumed that the data & log volumes of the source liveCache

instance will be lost/corrupted?

-> How about data & log backups?

1)

One of the options could be, that you lost livecache instance data& log

Volumes, there no data & log backups available any more, liveCache

Server was lost ( burn ? ), only you have restored the APO system &

APO database.

At that case you could install the liveCache/LCA of the same version

on another server, initialize liveCache in the LC10 transaction, the

post-initialization report will be running ( see SAP note 640107 for

more details ) & master data will be reloaded to the liveCache from

the APO database. After that you can retransfer the transaction data

from a connected R/3 system.

And you could find the documents & information at the links

Service.sap.com/scm -> mySAP SCM Technology

Service.sap.com/liveCache

For SAP liveCache documentation in English:

http://help.sap.com/saphelp_nw04/helpdata/en/f2/0271f49770f0498d32844fc0283645/frameset.htm

2)

You can find more information about general high availability solutions

as standby databases and hot standby on the following link:

http://dev.mysql.com/doc/maxdb/en/72/7ed43fb9490c65e10000000a114b1d/frameset.htm

The Hot Stand By solution is available in the SCM 4.1 on liveCache version 7.5 .

Hot Standby is an integrated solution using a Storage System and

automatic failover via a High Availability Cluster. It is implemented by IBM.

Please see

http://www.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP100442

You can even set up a standby database where a shadow redoes all

modifications on the master via log shipping.

You can either implement this by yourself or using the tool DBShadow by

Libelle (www.libelle.de).

*********

As you are running liveCache, you are the official SAP customer,

I recommend you to create the ticket to SAP on 'BC-DB-LVC' or

'BC-DB-LCA' queue, if you have further questions on this issue.

Thank you and best regards, Natalia Khlopina