Tag Archives: Tricks

Making Coherence play nice in your test environment

This issue has popped up a couple of times for me recently, so I thought I would do a quick post on it. When you are running a number of Fusion Middleware environments in the same IP subnet, as you … Continue reading

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Installer cannot access the oraInventory

Ran into another interesting little challenge today.  While installing SOA Suite onto a machine which already had another, completely separate Oracle product installation on it (albeit under a different userid), the installer helpfully reported that it could not access /home/oracle/oraInventory. … Continue reading

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Finding which JAR contains a class – again!

I posted a few days ago about finding which JAR file contains a class file – something I often want to do.  My friend Chris Johnson promptly posted a better version here with caching – thanks Chris! Chris said I … Continue reading

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Finding which JAR contains a class

I often want to search through a large number of JAR files looking for a particular class, and every time I do this I wish I had some utility to make it easier.  So I finally made one: #!/bin/sh TARGET=”$1″ … Continue reading

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Extracting Garbage Collection messages from a WebLogic Server log file

Recently, I was doing some work on tuning Garbage Collection in a HotSpot JVM (i.e. “the Sun JVM”) underneath WebLogic Server 10.3.3.  In order to do this, I wanted to look at the Garbage Collection logs.  The JVM will produce … Continue reading

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Increasing swap size on Solaris (using ZFS)

Today, I was installing the Oracle Database 11g R2 on a Solaris system, but it failed a prerequisite check during the installation – it did not have enough swap space available.  This particular system I had installed with ZFS.  Turns … Continue reading

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Recovering an Oracle database after doing something bad to your SPFILE

Well it has been over a year since the last time I broke my database, but I did it again today!  This time I increased the sga size without also increasing some other parameter, and the database would not start, … Continue reading

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