Best Practices for SOA Suite 11g to 12c Upgrade By Jay Kasi

December 3, 2014 Leave a comment

clip_image002A lot of effort has been put in by Oracle to make this major upgrade as smooth and easy as possible. The basic approach is to install SOA Suite 12c in a new oracle home and upgrade the domain and schemas in place. Customers undertaking the upgrade are primarily interested in a smooth upgrade, minimizing the number of manual steps in the upgrade, reduce the down time to a minimum, and minimize or eliminate any changes to client apps that use SOA APIs or web interfaces.

The key to a successful and smooth upgrade experience are the preupgrade preparations that you perform. The upgrade must be planned carefully. If the preupgrade preparations are not performed, there is a possibility that upgrade will fail in the middle or the system does not behave properly post upgrade. The only recourse to a failed production system upgrade is to roll it back from a full backup.

If your SOA domain includes BAM, then the upgrade is more complex because BAM does not support inplace upgrade. Please read the documentation carefully. The basic idea is to migrate the whole BAM deployment to a seperate domain using export/import, remove BAM from the soa domain during upgrade, and upgrade your soa domain to interop with the bam 11g domain. Later slowly and carefully migrate to BAM 12c from BAM 11g.

There are six top steps that should be performed before upgrade of your production system as a best practice.

  • Carefully review the prerequisites for upgrade in the documentation. Some of the prerequisites are checked upfront before we upgrade the schema in Upgrade Assistant but not all. Read all relevant upgrade documentation before starting on upgrade. Some of the key prerequisites are:

· Can only upgrade a domain that is 11.1.1.6 or 11.1.1.7. Migrate to a supported starting point before upgrade.

· Can only upgrade a deployment using a 64 bit JVM. Migrate to 64 bit JVM before upgrade.

· Can only upgrade a production domain not using XE DB and is not an admin server only domain.

· Can only upgrade a domain using LDAP or DB OPSS policy store. Migrate file based policy store to DB or LDAP based policy store before upgrade. Read the complete article here.

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Unknown's avatarAbout Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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