Suite upgrade timeouts
 

I am upgrading from 3.83 to 4.0.3. I completed 4.0.2 upgrade and am now on 4.0.3 upgrade. It times out on altering post table. I have around 3 million posts in the database. This is what I see:

Step 1) Misc Table Alterations

• Altering attachment Table (1 of 1)
• Updating attachment table
• Altering templatehistory Table (1 of 1)
• Updating templatehistory table
• Altering post Table (1 of 1)
• Altering post Table (1 of 1)

At that point it stops and says done. I check the mysql server status and can see the process still running (for around an hour) to alter the post table. I thought it would complete and then if I ran it again it would continue from the next table. But after completing the process, when I re-ran the import script it restarted from the beginning of 4.0.3 upgrade and again went through alter post table, which again timedout.

Is there an alternative to this? Can I run the mysql commands manually, and if so, which commands should i run.