Oracle is hanging? Don’t forget hanganalyze and systemstate!
sqlplus / as sysdba oradebug setmypid oradebug unlimit oradebug hanganalyze 3 oradebug dump ashdumpseconds 30 oradebug systemstate 266 oradebug tracefile_name Your Oracle database – production DB, of...
View ArticleTroubleshooting: ORA-29283 when oracle is member of a group with read/write...
Recently, I worked on an Oracle database migration for a customer and I faced a strange behavior when accessing a file stored on the file system of the Oracle database. The database has been migrated...
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Investigating Oracle lock issues with event 10704
Did you ever encounter unexplained Oracle lock issues? They may be coming from unindexed foreign keys (which is worse in 11g). It’s not easy to monitor. Of course you can check Oracle locks from...
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Kerberos SSO with Documentum D2 3.1 SP1
Last week, when I was working on how to setup the Kerberos SSO for D2 3.1 SP1, I faced some issues due to a documentation that doesn’t seem to be up to date… In fact, our version is D2 3.1 SP1 and...
View ArticleOracle TNS_ADMIN issues due to bad environment settings
Recently, I faced a TNS resolution problem at a customer. The reason was a bad environment setting: The customer called the service desk because of a DBLINK pointing to a bad database. The users were...
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SQL Server 2014: sys.dm_exec_query_profiles, a new promising feature
Among the hidden features provided by SQL Server 2014 there is a very interesting dynamic management view named sys.dm_exec_query_profiles. This feature will help the database administrators and...
View ArticleDocumentum upgrade project – ActiveX and D2-Client 3.1Sp1
This is another blog posting an our Documentum upgrade project. This time, the following issue occured: the ActiveX could not be installed using the D2-Client. We had to access the D2-Config url to...
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Oracle OPatch and “Archive not applied” error
Recently, I have installed an Oracle 11.2.0.4 RDBMS on a server, and I wanted to install the latest Patch Set Update (PSU) 11.2.0.4.4 from October 2014. During the execution, I fell on the error...
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quickly exchange code or text between workstations or teams
In a recent project I faced the following situation: One the one hand I had to execute scripts on a customer’s workstation while on the other hand I had to integrate the results of these scripts into a...
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SSISDB is too big and it is not every time the retention period’s fault!
In all blogs that I read, the solution is just to change the retention period to a reasonable value. Yes, it is true but in some case you need to go deeper in the analysis… Like you, I changed the...
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Delete an orphan user-database under SSISDB
I post a little tips for orphan database-users that we cannot drop so easily in the SSISDB… I discovered this by a customer and it was very tricky to find the explanation and the solution. This is the...
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SQL Server Tips: Default trace enabled but no file is active…
I discover a strange error with a customer about the default trace. As you know, SQL Server has a default trace with a lot of events like the data and log file growth. This trace is enabled by default...
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SQL Plan Directives strike again
12c SQL Plan Directives, a side effect, a bad application design, a bug… and the occasion to show how to quickly troubleshoot. An application has long response time since 12c migration. No blind...
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Documentum Administrator UCF Troubleshooting
Maybe you had some issues with UCF in DA as me. I had this for no reason since few days at a customer. The problem was that we use SSL with DA and the Unified Content Facilities (UCF) wasn’t happy...
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Documentum story – dm_LogPurge and dfc.date_format
What is the relation between dfc.date_format and dm_LogPurge? This is the question we had to answer as we hit an issue. An issue with the dm_LogPurge job. As usual once a repository has been created we...
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Documentum story – User gets kicked out of D2 when navigating in D2Config
On a customer site, one of the users complained about being kicked out each time he wanted to create new documents in D2. This issue is happening in a default deployment of D2 and D2Config in a...
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Observing DML restarts caused by invalidations
Usually, cursor invalidations do not interrupt the current execution of the cursor. You can even drop a table while a query on it is running and the query may end successfully. However some...
View ArticleDocumentum story – How to avoid “DFC_FILE_LOCK_ACQUIRE_WARN” messages in Java...
Ref : EMC article number The last publication date is Sat Feb 20 21:39:14 GMT 2016. Here the link: https://support.emc.com/kb/335987 After upgrading from 6.7.x to 7.2, the following warning message is...
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SQL Server 2016: New Dynamic Management Views (DMVs)
In SQL Server 2016, you will discover a lot of new Dynamic Management Views(DMVs). In this article, I will just give you a little overview of these useful views for us as DBA. SQL Server 2012 has 145...
View ArticleUnstructured vs. structured
The title of this blog post was: “Tracing DBMS_RCVMAN for reclaimable archivelogs” until I started to write the conclusion… In a previous post I mentioned that there’s a bug with archivelog deletion...
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