Infrastructure at your Service

Morgan Patou

Alfresco – Unable to move/rename a file/folder using AOS

By | Application integration & Middleware, Entreprise content management | No Comments
 

 When playing with the AOS implementation, a colleague of mine faced an interesting issue where he just wasn’t able to move or rename any files or folders. The creation and deletion were working properly but he was unable to move or rename anything when using a Network Location or a Network Drive. This environment was freshly installed with a front-end (Apache HTTPD) setup in SSL so we worked together to find out what was the…

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Morgan Patou

WebLogic – SSO/Atn/Atz – 403 Forbidden, another issue

By | Application integration & Middleware, Entreprise content management | No Comments
 

 Earlier today, I posted another blog with almost the same title but the similarities stop here. The thing is that when you access your application, there aren’t much error codes possible so if there is an issue, it’s often the same generic message that is being displayed on the browser. To get some background on the issue that I will present below, we are usually setting up the WebLogic Server, enabling the SSO on the…

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Morgan Patou

WebLogic – SSO/Atn/Atz – 403 Forbidden, a first issue

By | Application integration & Middleware, Entreprise content management | No Comments
 

 In a previous blog, I explained how it was possible to enable the SSO/Atn/Atz (SSO/Authentication/Authorization) debug logs in order to troubleshoot an issue. In this blog, I will show the logs generated by an issue that I had to deal with last month at one of our customers. This issue will probably not occur very often but it is a pretty funny one so I wanted to share it! So the issue I will talk…

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Clemens Bleile

Transfer redo in async-mode to the Gold/Master copy of the Production DB for ACFS snapshots

By | Database Administration & Monitoring | 2 Comments
 

 If you store your databases on the cluster filesystem ACFS you may use the provided Perl-script gDBClone from OTN to clone databases or create snapshot databases. It is an interesting approach to create clones from the Production DB in minutes regardless of the production DB size. What you do is to create a standby DB from your production DB on a separate cluster and use that standby DB as a Gold/Master copy for ACFS snapshots….

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Pascal Brand

How to rename an existing Fusion Middleware WebLogic Domain

By | Application integration & Middleware | No Comments
 

 Some times it happens that we need to rename an existing fusion Middleware WebLogic domain. I was asked to do such on a Fusion Middleware Reports & Forms environment. I took some time to check how this can be done and did some testing to confirm it works as expected. The difficulty is not the WebLogic Domain itself as a WebLogic domain can be created quickly but it is time consuming if the complete configuration…

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Mouhamadou Diaw

Dataguard: QUIZZ on Snapshot Standby

By | Database Administration & Monitoring | No Comments
 

 In oracle documentation we can find this about snapshot standby: A snapshot standby database is a fully updatable standby database that provides disaster recovery and data protection benefits that are similar to those of a physical standby database. The concept of snapshot standby is that we can temporary convert a physical standby to an updatable database for different purposes and then convert back to a physical standby. During the time that the database is a…

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Daniel Westermann

Are statistics immediately available after creating a table or an index in PostgreSQL?

By | Database Administration & Monitoring | No Comments
 

 While giving the last PostgreSQL DBA Essentials workshop this question came up: When we create a table or an index: are the statistics available automatically? To be more precise: When we create and load a table in one step, create an index on that table afterwards: Do we have the statistics available by default or do we need to wait for autovacuum to kick in or analyze manually? Lets see …

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Pierre Sicot

DBVISIT from Oracle to Postgres

By | Database Administration & Monitoring | No Comments
 

 As I regularly work on Oracle and PostgreSQL, I decided to test the replication from Oracle to PostgreSQL using the Dbvisit Replicate tool. Dbivisit Replicate does not use Oracle logminer ot triggers but its own mining processes to get the changes when they are written to the redo logs. When a change appears in the redo log, an external file called PLOG is generated and transferred to the target. The architecture is quite easy to…

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Morgan Patou

WebLogic – SSO/Atn/Atz – How to enable debug logs

By | Application integration & Middleware, Entreprise content management | No Comments
 

 Let’s say that you have an application deployed on a WebLogic Server and that the SSO/Atn/Atz (SSO/Authentication/Authorization) isn’t working or throwing a 4xx error code like ‘401 – Unauthorized’ or ‘403 – Forbidden’. How would you be able to know what is happening and how to solve it? Well the answer is always the same: enable debug logs, it is just a matter or choosing the right scope and choosing a way to do it…

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Morgan Patou

Documentum – DFC traces setup & investigation

By | Application integration & Middleware, Entreprise content management | No Comments
 

 When working with Documentum, you will most probably have to enable the DFC traces one day or another and then work with these traces to analyze them. The purpose of this blog is simply to show how the DFC traces can be enabled, which tools can be used to quickly process them and what are the limitations of such things. Enabling the DFC traces can be done very easily by updating the dfc.properties file of…

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