PostgreSQL version: 8.1.2
Operating system: Windows XP/2003

The PostgreSQL service is not starting anymore. When I manually start it, it said something like it started but ended immediately because it had no work to do. I encountered this error before but a simple re-installation fixed it. This time, it didn't.

I've tried running the service using a backup data folder w/c was 2 days ago, it runs. When I switch back to the current, I get the error above. So, I figured the current data must be corrupt. After examination of the data folder, the global folder is now not a folder but a file that is 8KB in size (I found this out by trying out the reset_xlog command and it said it could no longer find the global/xxx file).

I searched the documentation about what the global folder contains and found out that these contain cluster-wide tables like the list of databases, etc.

I wanted not to lose the latest transactions by restoring a backup. Now the question is this, is it ok to just copy the global folder from my backup 2 days ago, and replace the one in my current data folder? I'm very very sure no DDL statements were executed or no new databases/other objects were created since my last backup. Only DML statements were executed on the user's databases. Will I lose data if I do this?
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Christopher Brian L. Jurado
Big Smile Interactive
Primary Sotware Development Corporation
www.primesoft.ph




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