Okay.. I'll bite.. Why on Earth would you load a hash with 150 million key/value pairs!? Software packages like Oracle and MySQL were developed for one major reason: Storing large amounts of data for optimal retrieval requires lots of code tricks.

I'll assume you have a good reason and move on. :) The size of a hash is actually not infinite -- As you've found, the hash gets unusable after a certain size. I know there's a module out there called something like *::BigHash, but I can't find anything on it. Am I imagining things, or do any other monks know about this module?

Update: Cool! I'm learning about the specifics of DB_File now because of your question. Thanks! Anyway, maybe you need to use a different hashing algorithm? Can you tell if your program is bound by CPU cycles, Disk I/O, etc. when it begins to fail? Have you tried toying around with cachesizes on your DB_Hash? What about the different key sizes (if your data can relevantly be stored as a BTREE)? Can you give us a little more info about the data so we can help you out? And, what kind of computer are you using that can handle all this data!?!?

In reply to Re: millions of records in a Hash by joealba
in thread millions of records in a Hash by johnkj

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