The below snippet is from a program I've written to compare the data elements between database tables. This particular section reaches a table with a column having different datatypes in each table. Oracle doesn't like this and the program returns an error and fails. I'm trying to trap the error so the program can continue but I can't seem to get it to work? I've tried RaiseError, unless, and eval.... 
        #** Returns unique data from all included columns per table.
        $db3->{RaiseError} = 1;
        unless ($sth_minus = $db3->prepare_cached("
                                            SELECT $column_list FROM $
+database_user_1.$table_names_r->[0]".'@'."$config{database_dblink_1}
                                            MINUS
                                            SELECT $column_list FROM $
+database_user_2.$table_names_r->[0]".'@'."$config{database_dblink_2}
                                         "))
               {warn $@ if $@;}
             
        $sth_minus->execute;

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In reply to DBI Error Trapping by timo

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