SAP Data Guard configuration..

[Former Member]

Hello all,

We are planning to configure data guard in our production server (which is running on ECC6 (ABAP+JAVA), Oracle 10.2.0.4 and SunOS).

I have enough information to configure Data Guard in database level (Oracle), but I didn't find any documentation to configure application server (ABAP + Java) in stand by server. Could you suggest or provide documentation link for configuring data guard in application server level.

FYI, I have checked service.sap.com/inistguides.. but I din't find any.

Thanks in advance.

[mohammed_anish]

Hi,

What Anup has explained is right. There is no solution 'LIKE" oracle dataguard, for SAP. If you are trying to build a DR site, you have to install a new CI on the DR site.

If you are looking at "High Availability" on the primary site, you must have some HA solution like Clustering.

Regards,

Anish

[Former Member]

Thanks Bhanu & Nandi..

I know that we can replicate the system from storage level, but we are looking for some solution from SAP..

I have reviewd the document 'Setting up Oracle 10g Data Guard for SAP customers' but I didn't find the information to configure App server (ABAP+JAVA).

If you have any information/docs to configure SAP App server in data guard, could you send to this mail address..

sap_sudheer at yahoo dot com .

Thanks in advance.

[Former Member]

Hi Sudheer,

Please correct me if I am worng.. But dataguard is used for archive log replication for the primary DB to standby DB. Hence the config has to be done only for the DB server. I dont think there is any need / reason for configuring the same for application server. Also I am not sure if you can indeed configure that for an application server.

Regards,

Anup

[Former Member]

Hi Anup,

If that is the case, how to make SAP active - in stand by database in any emergency situation without App server.

Thanks,

[Former Member]

Hi Sudheer,

Assuming that you have a seperate app server in your DR site. You will have to build up the CI and application server once when you create DR site.

It case of a crisis, the standby DB will be opened and CI has to be started, SAP license has to be installed. Once that is done, you just need to have the correct profiles : instance and start profiles for that application instance. All the required mount points (Oracle home, oracle client, /sapmnt/SID and other sapdata filesystem) will have to be NFS mounted on your application server from DB and CI servers.

You may also need to replicate the /usr/sap/trans and /sapmnt/SID filesystems from the primary site on a preiodic basis so that the changes in primary site can be here in case of a crisis.. This activity can be done on the OS level via rcp and you can schedule the same in cron jobs.

Regards,

Anup

[Former Member]

I have a SAP/Oracle Guide to configure data gaurd which i usded for our landscape ... i can send you that but i dont know how ...send me ur id

Bhanu

[former_member204746]

http://sap.ittoolbox.com/groups/technical-functional/sap-basis/sap-data-guard-configuration-3509425

[Former Member]

Thanks for quick response.. I have already gone through this doc, they provided DB configuration but not App server configuration. I am looking for document for configuring App server (ABAP + Java stack) too.

Best regards,

[Former Member]

To do some thing similar to "data guard" at application layer, first you need to "virtualize" the application. ie, the applicaiton should be using virtual hostnames. Then to replicate appliaction file systems (/usr/sap/<SID>, /sapmnt/<SID> and others), you have to use either OS specific tools or storage sub-system features. We use NAS for our application tier and use NAS replication feature to replicate the file systems. Hope this helps!