Codedrop™ Weblog

Grails application throwing OutOfMemory error and PermGen space was exceeeded errors… Looks like grails applications require a fairly large permgen space… Here’s a useful  article on how to address this. Tweet This Post

Here’s a quick solution for trying to extract the raw xml string from an Oracle XDB database when working with Grails. After an initial attempt to hardcode a hibernate query to return the raw sql using .getStringVal() as follows: SELECT x.id, x.xmlData xmldata.getStringVal(), lines.* FROM xml_requests x XMLTable(‘declare default element namespace “http://www.foo.com/fooservice”; for $i in [...]

When javac is compiling a large number of java source files, it may fail with java.lang.OutOfMemoryError: The system is out of resources.Consult the following stack trace for details.java.lang.OutOfMemoryError: Java heap space It’s no different than OutOfMemoryError in other java applications. When you run javac in Sun JDK, it’s invoking com.sun.tools.javac.main.Main located in %JAVA_HOME%\lib\tools.jar. If you [...]

You don’t have to be much of a Techy to know about the power Firebug brings to the Firefox browser.  I’ve often been frustrated but the lack thereof of such support in IE… until now.  The Internet Explorer (IE) Developer Toolbar has been around for quite some time now, but in my ignorance I had [...]

If your looking for a solid plugin library for doing tooltips jQuery style, check out cluetip.  This library is based on the original jTip library created by Codey Lindley.  Cluetip offers a solid set of customizable options and the dynamic positioning logic that is available through some of the reference libraries solves many of the [...]

Recently I had the need to setup environment specific .yml files for email configuration.  Normally this goes off without a hitch, however in my case I had the additional requirement of being able to dynamically substitute values in the yml file at runtime.   I thought it would be nice to allow configuration of email to, [...]

If you find your application randomly throwing “ORA-12520: TNS:listener could not find available handler for requested type of server” errors, then try to increase the number of available processes that you have allocated to your Oracle instance. Logon to Oracle using sys as sysdba and execute the following: ALTER SYSTEM SET PROCESSES=150 SCOPE=SPFILE; After changing [...]

MacPorts is the preferred way of installing, managing, and upgrading ports of some the software I have on my Mac.  Unfortunately mac ports does not let you specify a version.  To mediate this you can create a local repository that is checked out to a specific version and install from there. This example is how [...]

Something I have always found annoying about JSF datatables is the limitation to only apply one header class style to the entire table. This is un-functional for datatables that would display monetary amount or other data that is typically right aligned whereas descriptive columns are left aligned. The table doesn’t look very nice if the [...]

An often useful technique for storing options is to use bit masking to identify if a particular option is enabled or disabled. A contrived example (and this is a poor example!) might be a ATM that allows control of what options are available to the user. Eg. 1 – Chequing 2 – Savings 4 – [...]