Since I published posts on how to retrieve command history within GGSCI using the Oracle provided commands of “history” and “fc”, I was pinged a couple of times by some friends asking about “rlwrap” usage with GoldenGate. The answer is a simple yes, rlwrap can be used with Oracle GoldenGate.
What exactly is “rlwrap”?
According to the readme file at http://utopia.knoware.nl/~hlub/uck/rlwrap/#rlwrap, rlwrap is a ‘read-one wrapper’. Basically, it allows for the editing of keyboard input for any command.
How to install?
There are two ways to install “rlwrap”. The first way is manually, which requires you to run the configure and make commands; however, the easiest way I’ve found is by using a yum repository. Tim Hall (a.k.a Oracle-Base) documents this process quite effortlessly over at his blog. Thanks Tim!
Usage?
After you have “rlwrap” installed, you simply have to create an alias in your profile to use it. You can use it from the command line as well; however, the alias approach ensure that it is executed every time you run ggsci. The below example is what I have running in my .bash_profile for the Oracle user.
alias ggsci='rlwrap $OGG_HOME/ggsci'
The next time I login to use ggsci, rlwrap will automatically be ran and then I will be able to scroll through the commands I typed while in ggsci. Another nice thing about “rlwrap” is that when I logout of ggsci, and then back in, my command history is available still.
Although the “history” and “fc” commands are handy, it would be nice to see Oracle include “rlwrap” into the core product of Oracle GoldenGate …
Enjoy!
@dbasolved
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Bobby Curtis
I’m Bobby Curtis and I’m just your normal average guy who has been working in the technology field for awhile (started when I was 18 with the US Army). The goal of this blog has changed a bit over the years. Initially, it was a general blog where I wrote thoughts down. Then it changed to focus on the Oracle Database, Oracle Enterprise Manager, and eventually Oracle GoldenGate.
If you want to follow me on a more timely manner, I can be followed on twitter at @dbasolved or on LinkedIn under “Bobby Curtis MBA”.
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