odbc_num_rows fails when HAVE_SQL_EXTENDED_FETCH is commented out

Hi,
I'm using php-4.3.3 on mandrake Linux. I had a performance problem accessing
 to DB2 databases on As400 systems. When I searched the internet I found out
 that commenting out '#define HAVE_SQL_EXTENDED_FETCH 1' lines from php_odbc
_includes.h file could solv
e the problem. I edited the file and recompiled php; the result was a much b
etter performance. But this time odbc_num_rows() statement fails and always 
returns -1. How can I solve this problem? Any suggestions?
Thanks in advance
Mahmut Eren

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