Oracle MVA

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Archive for the ‘RCU’ Category

Active Data Guard & Fusion Middleware Repositories.

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Last year while working on a POC Rob den Braber noticed the following in Disaster Recovery for Oracle Elastic Cloud with Oracle ExaData Database Machine on page 13:

Currently, Oracle Fusion Middleware does not support configuring Oracle Active Data Guard for the database repositories that are a part of the Fusion Middleware topology. However, Active Data Guard can be configured if your custom applications are designed to leverage the technology.
Today this came up in a discussion with Simon Haslam , and he didn’t hear from this support issue before. So it seems that it is not that well know that Active Data Guard and Oracle Fusion Middleware is not a supported combination.
This makes this blog post a reminder from what is already in documentation (unless someone can comment and tell me that currently in the quote is not so currently anymore).
Hope this helps.
UPDATE:
While reading this brand new SOA HA paper I found this quote today:

The Oracle Active Data Guard Option available with Oracle Database 11g Enterprise Edition enables you to open a physical standby database for read-only access for reporting, for simple or complex queries, or sorting while Redo Apply continues to apply changes from the production database. Oracle Fusion Middleware SOA does not support Oracle Active Data Guard because the SOA components execute and update information regarding SOA composite instances in the database as soon as they are started.

Written by Jacco H. Landlust

April 26, 2013 at 4:43 pm

Configuring Fusion Middleware JDBC Data Sources Correctly

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The out of the box settings for a data source in a random Fusion Middleware product (SOA, WebCenter, OIM, etc. they are all alike) JDBC properties contains guesses about your environment and usage. Same goes for the settings required by RCU when installing a repository.

For a customer I recently wrote a document explaining which settings to set on the database and in WebLogic when configuring data sources for a Fusion Middleware product for production usage while connected to a RAC database.

The document assumes you are running a 11.2 RAC and WebLogic 10.3.4 or newer. Here’s the document:

Configure JDBC data sources for RAC

Hope this helps.

BTW: if you already downloaded the document, please download it again. Seems I made an error in the distributed lock area.

Written by Jacco H. Landlust

November 17, 2012 at 1:13 am

RCU-6011

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After reading the documentation and running RCU commandline for some time (mostly from a script I build) I felt confident about RCU. For a new environment I had to run RCU manually, so I setup the command:

$ ./rcu -silent -createRepository -connectString scan.area51.local:1521:rcuservice -dbUser SYS -dbRole sysdba -component MDS -component SOAINFRA -component OIM -component IAU -schemaPrefix DEV -f < /home/oracle/pass

and ran into this error:

Processing command line ....
Repository Creation Utility - Checking Prerequisites
Checking Global Prerequisites
RCU-6011:A valid prefix should be specified. Prefix can contain only alpha-numeric characters. It should not start with a number and should not contain any special characters.
RCU-6091:Component name/schema prefix validation failed.

Now this error surprised me to great extend. The parameters where all there, so what could cause this?  Some suffling around with the parameters learned me that this command does run:

$ ./rcu -silent -createRepository -connectString scan.area51.local:1521:rcuservice -dbUser SYS -dbRole sysdba -schemaPrefix TLTB1 -component MDS -component SOAINFRA -component OIM -component IAU -f < /home/oracle/pass

Turn out that the order of the parameters is of importance to rcu.

Hope this helps.

Written by Jacco H. Landlust

October 26, 2011 at 11:34 am

“ignore” means “please restart the process”

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I just wasted lots of my precious time (and the time of a support officer at Oracle).  When loading a repository using RCU I got an error mentioning that the TSPURGE package was not valid. The option I got were “ignore” and “stop”. Looking some more into the error it turns out that the tspurge package (in ODS schema) relies on DBMS_JOB. The grant to public for DBMS_JOB was removed on the security advice from OEM though. Just granting execute privileges on DBMS_JOB to the ODS user and hitting “ignore” results in a faulty repository (even though RCU claims all went perfectly). So, “ignore” means “please restart the process from the start”. It’s very interesting that Oracle’s own RCU tool doesn’t handle the security settings suggested by Oracle though.

Written by Jacco H. Landlust

June 15, 2010 at 4:07 pm