I am having a similar problem on my board and I would appreciate some advice. I think I actually made things worse and may have to delete my index and start again, but before I do that I want to try everything I can to save the work I have already done because it has taken two days already.
: made my phpBB 2.0 forum read only to members and backed up the database and files
: successfully installed phpBB 3.0 and loaded all the posts etc (completed the install wizard)
: started indexing process (ACP -> Maintenance -> Search). The indexing status window would pop up and say 'Indexing is in progress' and the main browser window would go all white. I came here and saw a thread about this saying that the white screen indicates an error and that no indexing is actually happening, so I began to close both windows and restart indexing every time I got the white screen.
: my forum was still read only and the indexing was still going slow. At this stage only about 3,000/24,000 posts were indexed. Did more research here and saw that others had experienced delays and decided to just wait it out, and restart the indexing process every time I got the white screen.
: got desperate to find out if there is any progress or if there is a faster solution, so I searched a bit more here and saw the suggestion above to increase the timeout and maximum memory limits. Changed these settings on our server and had no better luck. Continued running indexing and starting again when the white screen showed up.
: indexing through post 6,000/24,000 completed before I gave up for the day.
: read somewhere here about possibly changing the backend search option to Fulltext mysql and decided to give that a try. Went into ACP -> Search settings and changed it to fulltext mysql and then went to Maintenance -> Search and stopped the current process. Tried building a new search index under the Fulltext mysql area, and got an error. Tried to go back to fulltext native, and thought maybe I would have better luck if I cancelled the process and see how far the progress was.
Long story short, I now have the following in my Search Index page in ACP:
Fulltext native (active)
Total number of indexed words: 16581 Total number of word to post relations indexed: 83769
When I try to do a search on my forum, I get very few results or none at all, so the process clearly hasn't finished - so what do I need to do? Delete the Fulltext native index I have now and start over? There isn't an option to restart the process where I left off.
I suspect this is what I have to do, but once I restart how do I resolve the rediculous delays and white screens during the indexing process? My board has been offline for two days already and starting over will mean another three days at least at this rate - and a whole lot of closing and reopening browser windows.
Can I open the board to new posts while I sort out this indexing problem? Or will new posts in the interim delay the indexing when I do finally find a process that works?
Sorry for the long-winded post, I just wanted to include all the details I could think of to describe how I got here. I would appreciate any advice to get my board finally up and running