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Category Archives: Entreprise content management

Morgan Patou

Documentum story – Attempt to fetch object with handle 3c failed

By | Entreprise content management | 2 Comments

Some time ago, I was working on the preparation of an upgrade of a Content Server and everything was working fine so I was about to begin but just before that I checked our monitoring interface for this environment to crosscheck and I saw the following alerts coming from the log file of the docbases installed on this CS: 2016-04-05T10:47:01.411651 21425[21425] 0000000000000000 [DM_OBJ_MGR_E_FETCH_FAIL]error: “attempt to fetch object with handle 3c3f245a60000210 failed”   As you might…

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Morgan Patou

Documentum story – Unable to start a new Managed Server in SSL in WebLogic

By | Entreprise content management | No Comments

Some time ago, I was creating a new Managed Server named msD2-02 on an existing domain of a WebLogic Server 12.1.3.0 created loooong ago and I faced a small issue that I will try to explain in this blog. This Managed Server will be used to host a D2 4.5 Application (Documentum Client) and I created it using the Administration Console, customized it, enabled the SSL with internal SSL Certificates, the SAML2 Single Sign-On, aso……

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Morgan Patou

Documentum story – Replicate an Embedded LDAP manually in WebLogic

By | Entreprise content management | No Comments

In this blog, I will talk about the WebLogic Embedded LDAP. This LDAP is created by default on all AdminServers and Managed Servers of any WebLogic installation. The AdminServer always contains the Primary Embedded LDAP and all other Servers are synchronized with this one. This Embedded LDAP is the default security provider database for the WebLogic Authentication, Authorization, Credential Mapping and Role Mapping providers: it usually contains the WebLogic users, groups, and some other stuff like…

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Gérard Wisson

Documentum story – Jobs in a high availability installation

By | Entreprise content management | No Comments

When you have an installation with one Content Server (CS) you do not take care where the job will be running. It’s always on your single CS. But how should you configure the jobs in case you have several CS? Which jobs have to be executed and which one not? Let’s see that in this post. When you have to run your jobs in a high availability installation you have to configure some files and objects….

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Pascal Brand

Documentum story – How to display correct client IP address in the log file when a WebLogic Domain is fronted by a load Balancer

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

The Load Balancers do not provide the client IP address by default. The WebLogic HTTP log file (access_log) does not provide the client IP address but the Load Balancer one. This is sometimes a problem when diagnosing issues and the Single Sign On configuration does not provide the user name in the HTTP log either. In most of  the cases, the Load Balancer can provides an additional header named “X-Forwarded-For” but it needs to be…

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Morgan Patou

Documentum story – Change the location of the Xhive Database for the DSearch (xPlore)

By | Entreprise content management | No Comments

When using xPlore with Documentum, you will need to setup a DSearch which will be used to perform the searches and this DSearch uses in the background an Xhive Database. This is a native XML Database that persists XML DOMs and provide access to them using XPath and XQuery. In this blog, I will share the steps needed to change the location of the Xhive Database used by the DSearch. You usually don’t want to…

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Morgan Patou

Documentum story – Documentum installers fail with various errors

By | Entreprise content management | No Comments

Some months ago when installing/removing/upgrading several Documentum components, we ended up facing a strange issue (yes I know, another one!). We were able to see these specific errors during the installation or removal of a Docbase, during the installation of a patch for the Content Server, the installation of the Thumbnail Server, aso… The errors we faced change for different installers but in the end, all of these errors were linked to the same issue….

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Morgan Patou

Documentum story – Monitoring of WebLogic Servers

By | Database Administration & Monitoring, Entreprise content management | No Comments

As you already know if you are following our Documentum Story, we are building, working and managing, for some time now, a huge Documentum Platform with more than 115 servers so far (still growing). To be able to manage properly this platform, we need an efficient monitoring tool. In this blog, I will not talk about Documentum but rather I will talk a little bit about the monitoring solution we integrated with Nagios to be…

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Morgan Patou

Documentum story – IAPI login with a DM_TICKET for a specific user

By | Entreprise content management | No Comments

During our last project, one of the Application Teams requested our help because they needed to execute some commands in IAPI with a specific user for which they didn’t know the password. They tried to use a DM_TICKET as I suggested them but they weren’t able to do so. Therefore I gave them detailed explanations of how to do that and I thought I should do the same in this blog because I was thinking that maybe a…

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Morgan Patou

Documentum story – ADTS not working anymore?

By | Entreprise content management | No Comments

A few weeks ago, on one of our Documentum environments, we find out thanks to our monitoring that the Renditions weren’t generated anymore by our CTS/ADTS Server… This happened in a Sandbox environment where a lot of dev/testing was done in parallel between EMC, the different Application Teams and the Platform/Architecture Team (us). A lot of changes at the same time means that it might not be easy to find out what caused this issue…   After a…

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