You don't give us much to go on here. How (Not) To Ask A Question

Guessing from the directory name /perlfect/ and a little Google... Is this file ".../perlfect/search.pl" from the http://www.perlfect.com/freescripts/search/ source code?

Here are lines 77 and 78 of search.pl. I'd guess $db_package is blank and you have a configuration problem. 

tie %inv_index_db, $db_package, $INV_INDEX_DB_FILE, O_RDONLY, 0755 or 
+die "Cannot open $INV_INDEX_DB_FILE: $!";   
tie %docs_db,      $db_package, $DOCS_DB_FILE, O_RDONLY, 0755 or die "
+Cannot open $DOCS_DB_FILE: $!";

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In reply to Re: Error cannot locate TIEHASH by gmargo
in thread Error cannot locate TIEHASH by blackcode

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