Hello, At work, we have an IBM Db2 database. Until recently, it lived within our local network, but has since been moved off-site (to the cloud). We connect to it using an iSeries Access ODBC driver. For communication, I typically use PHP's ODBC interface (sometimes other languages).
When the database was local, everything seemed to run smoothly; but now that it is off-site, fetching results from SELECT queries is very slow (12 seconds for 100 rows). I thought at first it was an issue on our host's side (or even our network), but all tests indicated otherwise. A proof of this is that I made a C program to run the same query (using the same driver), and it fetched the results within milliseconds after the query completed. I should perhaps point out that running the queries is fast, it's only fetching the result rows that is slow. The only comments I could find that mentioned a similar issue was for people that were using a Db2 driver: if they passed the "SQL_CUR_USE_ODBC" option to the "odbc_connect" function, then their result collection was sped up. I tried that, but it made no difference (perhaps because I'm not using a Db2 driver, per se, but an iAccess driver). I'm not so sure that this is an error with PHP so much as a setting that needs to be tweaked; but I can't seem to find what setting that might be. I can see there is a default_cursortype option in the php.ini file, but I don't know what options are available or how to properly set the value. I also tried using PDO and ADOdb, but both resulted in the same slowness (I'm guessing because they just wrap the ODBC interface). So, as I my first choice is not to re-write a bunch of scripts into C, I was wondering if any of you might know (or have ideas as to) what the issue might be. The PHP versions I have been using are 8.3.2 and 8.3.3, and I've tried the test on both Windows and Linux. Thanks, Zachary
