ORA-00600

The ORA-600 is an internal Oracle error that can be reported by a very serious error. A lot of times this error can't be solved by an onsite DBA and needs direct help from Oracle to help troubleshoot the issue. If the trace files from the error don't prove to be useful in troublehsooting the error yourself usually the next course of action is to log into metalink(Oracle Support) and use...
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Tip # 3 – Maintain your SQL Server

Top 10 Tips for SQL Server Performance and Resiliency
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ORA-12154: TNS:could not resolve the connect identifier specified

ORA-12154: TNS:could not resolve the connect identifier specified This is one of the most common Oracle errors and it is basically telling you that you are trying to connect to a database name that is unknown to the system. The most common cause are typos in your connection string or network configuration files. Everyone makes mistakes and even someone that works in these...
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Liferay Performance Enhancement Tips - Lightweight Themes

Liferay themes are an easy way to transform the look and feel of your portal. Theme development is not difficult and can be done with Velocity or FreeMarker templates. You can also create a JSP-based theme but that's less common. We can talk for quite a while about theme development; however, this blog targets performance concerns. Bad decisions in your theme can easily lead to...
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Dynamic DataTables Headers Using AngularJS

We had a requirement in an AngularJS portlet to make jQuery DataTable columns dynamic. Normally, DataTable fetches a JSON object that contains the headers and uses that object to instantiate the DataTable. Doing it the Angular way is a bit different. The challenge is adhering to the way Angular does things where it is not advisable to put your service in a directive....
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Oracle Software Licensing in the Cloud

It's well known that Oracle has some of the most complicated licensing practices when dealing with virtual hosts/machines. Not only complicated, but also very expensive. I recently work on a project involving a database move to one of the popular cloud environments. I also had to price out the Oracle licenses for the project. I was expecting to find similar pricing practices being used in a...
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SQL Server Tip # 2 – Check your Security

Top 10 Tips for SQL Server Performance and Resiliency
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Oracle subscription for node down event still pending

You will sometimes see this message on an Oracle database from 10g forward as that is when the default subscription to the Oracle Notification Service(ONS) was introduced. In a single instance environment it is recommended to disable the subscription by adding the below line to your listener.ora file and then restart or reloading your listener. ...
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Tip for debugging shell scripts

Often enough I have to mess around with shell scripts and even more often I have to spend a considerable amount of time debugging scripts. Though whenever I find myself having to debug a script I often use this little bit of code to help me step through my code to find my problem. I simply enter the below into the script before the code that I'm having an issue with and it lets me see the...
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Xtivia Search Innovation

Are you using Liferay's Solr 4 Search Engine EE ? If so, you need to checkout Xtivia Search! There are 2 parts to Xtivia Search: Xtivia's solr4 web plugin Xtivia's search hook plugin The following features are included: Improved Performance - Improve search results render time from 10+ seconds to 1-2 seconds. Configurable Relevance - Search results that...
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