We inadvertently deleted an IFS file that was created today and therefore was not on the previous night’s backup. What I wouldn’t give for an IFS recycle bin! We can recreate the file, but I wonder, short of backing everything up every minute, if there is anything that I could have done to prepare for such a situation?

-Chris

My sympathy, Chris. I hate it when that happens. As you point out, the IFS has no recycle bin, but there is a way you can delete a file from a directory without deleting it from disk. I’ll show you the

This is the last of the performance tips that I received from one of your fellow readers. I hope you’ve enjoyed the previous tips and found some of them useful as well.

Today’s advice: “Increase the journal recovery ratio from the default of 50,000 to 250,000.”

IBM’ers Larry Youngren and Chris Kindinger provide a thorough discussion of this topic at http://www.redbooks.ibm.com/abstracts/tips0625.html”. Although the discussion centers around V5R4, they also provide information for V5R3 and V5R2.

The journal recovery ratio has to do with the IPL process. The journal recovery ratio’s purpose is to limit the number of journal entries

When we upgraded our i550 box from V5R3 to V5R4, we had to check for the completion of the Initialize System (INZSYS) command before we could do anything else after an IPL. What is the INZSYS command and why do I have to worry about it?

–Jim

The Initialize System (INZSYS) command is a special command that i5/OS uses to perform initialization conversions during a software package installation. What you may not realize is that a licensed program installation (such as an i5/OS upgrade) really consists of two different steps.

1. The licensed program part of the installation process
2. The INZSYS