Mate, I can see you asked same que to DB2 level-1 support in AU. Just wondering if you have got your required info or not yet :-)

Hi Guys,

I just wondering whether is really worthwhile enabling CIO for DB2. The reason behing my question is under JFS2 and file system buffering you can basically take advantage of readahead_max_p ages which makes a huge difference when performing large read sequential (e.g database backup or even large joins suh as the one's common on a datawarehouse ). My impresion is that once CIO is enable it'll use DIO implicitly therefore...