ahhh... I haven't touched Sol in 5 years...I guess it shows! Thanks, Matt ________________________________ From: Matthew Zito [mailto:mzito@xxxxxxxxxxx] Sent: Tuesday, December 12, 2006 9:51 AM To: kevinc@xxxxxxxxxxxxx; oracle-l Subject: RE: I/O and db_file_multiblock_read_count Nono, its just that on Linux, let's say, cat S.dbf > /dev/null is fast, but an strace will show that its actually doing a stream of write()s to the device. On solaris, it does something like (horrible perl-ish pseudocode): if ( dest == /dev/null) { exit 0; } else { write(contents, dest); } Matt ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Kevin Closson Sent: Tuesday, December 12, 2006 12:45 PM To: oracle-l Subject: RE: I/O and db_file_multiblock_read_count what? can't dump junk in the bit bucket on Sol? I must not be gettign your point ________________________________ From: Matthew Zito [mailto:mzito@xxxxxxxxxxx] Sent: Tuesday, December 12, 2006 9:40 AM To: kevinc@xxxxxxxxxxxxx; oracle-l Subject: RE: I/O and db_file_multiblock_read_count /dev/null is hard, as some OS'es, solaris notably, do evil tricks with certain utilities (like cat something to /dev/null - it returns immediately). Not sure about dd ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Kevin Closson