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Vsphere 6.0 improvements for Windows Failover Clusters
A couple of days ago, VMWare announced vSphere 6.0. I guess many of our customers have been waiting for this new release and probably I will see in the next few months this new version rolled out on...
View ArticleOracle multitenant dictionary: rowcache
I've not finished with my investigation on 12c multitenant dictionary. Here, I'm checking how metadata links are managed by the dictionary cache (aka rowcache). As I did previously, I'll create a...
View ArticleNever gather WORKLOAD stats on Exadata...
For Exadata, oracle has introduced an 'EXADATA' mode which sets a high transfer rate (with IOTFRSPEED as in NOWORKLOAD statistics) and set a MBRC (as in WORKLOAD statistics). Those values are set...
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Exception from executeScript in Alfresco Share
I didn't have the opportunity to post a new entry about Alfresco in this blog for a long time now, so I will fix this! In this blog entry, I will talk about a bug I encountered a few months ago. I...
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Security via policies
Few weeks ago, I presented the session on security via Policies for "Les journées SQL Server 2014", organized by the French SQL Server User Group (GUSS) in Paris.
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SCOM: don't forget to set the license key!
During some client testing operations I installed some months ago a version of System Center Operation Manager 2012 on a Virtual Machine.Today I try to open this version of SCOM to perform some new...
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Considerations about SQL Server database files placement, Netapp storage and...
When you install SQL Server, you have to consider how to place the database files. At this point you will probably meet the well-known best practices and guidelines provided by Microsoft but are you...
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SQL Server monitoring with nagios: installation
Nagios is an IT Infrastructure monitoring solution which is able to monitor SQL Server instances with a specific plugin.I have installed this plugin to test those functionalities and I will explain...
View ArticleOracleText: inserts and fragmentation
I plan to write several posts about OracleText indexes, which is a feature that is not used enough in my opinion. It's available in all editions and can index small text or large documents to search...
View ArticleOracleText: deletes and garbage
In the previous post we have seen how the OracleText index tables are maintained when new document arrives: At sync the new documents are read up to the available memory and words are inserted in the...
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Case of monitoring snapshot replication from the subscriber side
I don’t work often with SQL Server replication. The main reason is that the number of customers that use replication is pretty low and each time that I have to deal with it, it’s a good opportunity to...
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SQL Server monitoring with nagios: utilisation
We saw in my last blog how to install the SQL Server plugin for Nagios.In this new blog, I will explain: how to create a wrapper to avoid the unset of the PERLLIB variable how to create and configure a...
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QlikView Tips & Tricks
For several months now, I've been working on some QlikView projects which is a quite interesting discovery for me. Generally, these projects are limited to the management of QlikView at the...
View ArticleIs CDB stable after one patchset and two PSU?
There has been the announce that non-CDB is deprecated, and the reaction that CDB is not yet stable. Well. Let's talk about the major issue I've encountered. Multitenant is there for consolidation....
View ArticleHow to set NLS for SQL Developer
I'm using Oracle SQL Developer 4.1 Early Adopter for a while and I like it. That version comes with a command line (in beta) which goal is to be fully compatible with sqlplus but running in java, and...
View Article12c online statistics gathering and startup restrict
I've written about 12c online statistics gathering in a UKOUG OracleScene article. My opinion is clear about it: you sill need to gather stale stats afterwards or you have mising, stale and...
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Using Windows 2012 R2 & dynamic witness feature with minimal configurations
Do you have ever seen the following message while you’re trying to validate your cluster configuration with your availability groups or FCI’s and Windows Server 2012 R2? Microsoft recommends to add a...
View ArticleQuery the Enterprise Manager collected metrics
Enterprise Manager (Cloud Control for example) gathers a lot of metrics. You can display them from the GUI, but you can also query the SYSMAN views directly. Today, I wanted to get the history of free...
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RAC Attack! next month 12c in Las Vegas
RAC is the most complex installation you can have for an oracle database. A RAC DBA is involved not only on database, but storage, network, and system as well. It involves also the application in...
View ArticleGeneric query for multicriteria search - part I: USE_CONCAT (OR Expansion)
You have a multicriteria search screen on the EMPLOYEE table where you can enter an employee id, a department id, a manager id or a job id. Either you put the value you want to filter on, or you leave...
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