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Need Help on Migration

savasirez
Level 3
Employee
Hi,

I'm trying to outline the steps to migrate an Oracle RAC (using ASM volumes) environment to SFRAC. Do you think the following steps are enough?

Our setup will be similar to this:

           ---RAC-1 ---
SAN--|                    |------------------------|-- Oracle with Single Node --|--SAN
           ---RAC-2 ---  
              OC Site                                                     DR Site
      
System on OC Site contains 2-node Oracle RAC Cluster with ASM volumes on SAN and DR Site will contain a single node Oracle

1. Install SFRAC without configuration on DR site
2. Reboot nodes on DR site
3. Backup Servers on OC site (Both Oracle and Filesys)
4. Install SFRAC without configuration on OC site
5. Reboot nodes on OC site
6. If ASM volume encapsulation is possible:
   a. shutdown database
   b. Encapsulate asm volumes to take them under vxvm control
   c. Startup database and check if the databases are working
7. If ASM volume encapsulation is not possible:
  a. Create a new volume under vxvm control with the same size as the current ASM volume.
  b. Tell the customer to make this new volume to be ASM volume
  c. Tell the customer to mirror/copy current ASM volume to new ASM volume
8. After ASM mirroring/copying is complete, disable/remove the current ASM volume and make the new ASM volume current
9. Create new volumes on DR site with the same size
10. Tell the customer to make the new volume  as ASM volume on DR site (Oracle must be installed first, of course)
11. Create other VVR volumes on both sites
12. Configure SFRAC on both sites (vxfen, llt, resources etc)
13. Shutdown Oracle on OC site
14. Start Oracle processes under VCS
15. Start replication
16. Create FireDrill resources on DR site to check if replication is OK

1 ACCEPTED SOLUTION

Accepted Solutions

Gaurav_S
Moderator
Moderator
   VIP    Certified

Hello,

step 1 & 4,  I hope you know you will need to install  CRS as a part of installing SFRAC .. there would be multiple steps in installing SFRAC ( Install & relink oracle) like those...

step 6, Not entirely sure if encapsulation of ASM volumes is possible however, you can integrate ASM with SFRAC to take advantage of DMP... you can read page 637 of SFRAC Install guide for 5.1  (https://vos.symantec.com/documents)

Here is a section from guide:

To configure ASM in SF Oracle RAC installations

1 InstallASMin a home directory separate from theORACLE_HOMEdirectory.
See “Installing Automatic Storage Management” on page 638.

2 For Oracle RAC 10g installations: Copy the VCS IPC libraries.
See “Copying the VCS IPC libraries” on page 640.

3 Create the required database storage on ASM by creating CVM disk groups
and volumes for use as ASM disks.
See “Creating database storage on ASM” on page 641.

4 Create ASM disk groups and instances.
See “Creating ASM disk groups and instances” on page 642.

5 Verify the ASM installation.
See “Verify the ASM installation” on page 646.

6 Create the Oracle database. For instructions, see the Oracle RAC
documentation.

7 Configure VCS service groups for the Oracle database.
See “Configuring VCS service groups for database instances on ASM”

you will need to understand how this integration is happening as I understand it is at diskgroup & CVM volume level...

Rest steps looks fair...

Gaurav

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4 REPLIES 4

Gaurav_S
Moderator
Moderator
   VIP    Certified

Hello,

step 1 & 4,  I hope you know you will need to install  CRS as a part of installing SFRAC .. there would be multiple steps in installing SFRAC ( Install & relink oracle) like those...

step 6, Not entirely sure if encapsulation of ASM volumes is possible however, you can integrate ASM with SFRAC to take advantage of DMP... you can read page 637 of SFRAC Install guide for 5.1  (https://vos.symantec.com/documents)

Here is a section from guide:

To configure ASM in SF Oracle RAC installations

1 InstallASMin a home directory separate from theORACLE_HOMEdirectory.
See “Installing Automatic Storage Management” on page 638.

2 For Oracle RAC 10g installations: Copy the VCS IPC libraries.
See “Copying the VCS IPC libraries” on page 640.

3 Create the required database storage on ASM by creating CVM disk groups
and volumes for use as ASM disks.
See “Creating database storage on ASM” on page 641.

4 Create ASM disk groups and instances.
See “Creating ASM disk groups and instances” on page 642.

5 Verify the ASM installation.
See “Verify the ASM installation” on page 646.

6 Create the Oracle database. For instructions, see the Oracle RAC
documentation.

7 Configure VCS service groups for the Oracle database.
See “Configuring VCS service groups for database instances on ASM”

you will need to understand how this integration is happening as I understand it is at diskgroup & CVM volume level...

Rest steps looks fair...

Gaurav

Anoop_Kumar1
Level 5
Hi,

However below document does not cover ASM, still it can help to create plan of action.

https://www-secure.symantec.com/connect/sites/default/files/Migrating_SF_Oracle_HA_to_SFRAC_final.pdf

Regards,
~Anoop

Anoop_Kumar1
Level 5

Below document is related to your requirement.

https://www-secure.symantec.com/connect/sites/default/files/Migration_from_ASM_to_CFS_final.pdf

~Anoop

savasirez
Level 3
Employee
@Anoop: Thank you very much, the documents will be surely helpful.

@Gaurav: The customer most probably wont be able to change their ASM volumes because of their agreements with another company which installed it, so that's why i need to encapsulate them... If i can't, i need to create new volumes and use ASM on that volume.
Thank you for your comments...