Re: Fav. Urban Legend...Quotable quotes
..increasing the buffer hit ratio from 95 to 99 percent can yield performance gains of over 400 percent Retrieving data from memory is over 1 times faster than retrieving it from disk A more efficient method is to have the database write to the redo logs only when all the log buffers are filled or when a commit is issued. This happens when log_checkpoint_interval is set to zero This allowed the O/S to dedicate a specific background process to moving the log buffers upon checkpoint to the redo files At times, specifying multiple hints can mysteriously cause the query to use none of the hints The INDEX_DESC hint causes indexes to be sorted in descending order...This index is overwritten when the query has multiple tables Cheers Connor --- Freeman, Robert [EMAIL PROTECTED] wrote: Ok... one of my favorite Urban Legends is this one: The book is always right. In other words, if it's written down in a book we bought off of Amazon, it must be so. So, I'd like to ask, without anyone taking potshots at specific authors, what is the dumbest, silliest, or most technically incorrect thing you have ever seen in an Oracle book? RF Robert G. Freeman - Oracle8i OCP Oracle DBA Technical Lead CSX Midtier Database Administration The Cigarette Smoking Man: Anyone who can appease a man's conscience can take his freedom away from him. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Freeman, Robert INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). = Connor McDonald http://www.oracledba.co.uk (mirrored at http://www.oradba.freeserve.co.uk) Some days you're the pigeon, some days you're the statue __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-1?q?Connor=20McDonald?= INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: Fav. Urban Legend...Quotable quotes
This does make you wonder about the recently awarded Master's certification given by Oracle. (Not taking anything away from Jeremiah though) Paul -Original Message- Sent: Thursday, March 14, 2002 3:20 PM To: Multiple recipients of list ORACLE-L ..increasing the buffer hit ratio from 95 to 99 percent can yield performance gains of over 400 percent Retrieving data from memory is over 1 times faster than retrieving it from disk A more efficient method is to have the database write to the redo logs only when all the log buffers are filled or when a commit is issued. This happens when log_checkpoint_interval is set to zero This allowed the O/S to dedicate a specific background process to moving the log buffers upon checkpoint to the redo files At times, specifying multiple hints can mysteriously cause the query to use none of the hints The INDEX_DESC hint causes indexes to be sorted in descending order...This index is overwritten when the query has multiple tables Cheers Connor --- Freeman, Robert [EMAIL PROTECTED] wrote: Ok... one of my favorite Urban Legends is this one: The book is always right. In other words, if it's written down in a book we bought off of Amazon, it must be so. So, I'd like to ask, without anyone taking potshots at specific authors, what is the dumbest, silliest, or most technically incorrect thing you have ever seen in an Oracle book? RF Robert G. Freeman - Oracle8i OCP Oracle DBA Technical Lead CSX Midtier Database Administration The Cigarette Smoking Man: Anyone who can appease a man's conscience can take his freedom away from him. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Freeman, Robert INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). = Connor McDonald http://www.oracledba.co.uk (mirrored at http://www.oradba.freeserve.co.uk) Some days you're the pigeon, some days you're the statue __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-1?q?Connor=20McDonald?= INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: Fav. Urban Legend...Quotable quotes
Ofcourse they are all true ! ;;-) Connor McDonald wrote: ..increasing the buffer hit ratio from 95 to 99 percent can yield performance gains of over 400 percent Retrieving data from memory is over 1 times faster than retrieving it from disk A more efficient method is to have the database write to the redo logs only when all the log buffers are filled or when a commit is issued. This happens when log_checkpoint_interval is set to zero This allowed the O/S to dedicate a specific background process to moving the log buffers upon checkpoint to the redo files At times, specifying multiple hints can mysteriously cause the query to use none of the hints The INDEX_DESC hint causes indexes to be sorted in descending order...This index is overwritten when the query has multiple tables Cheers Connor --- Freeman, Robert [EMAIL PROTECTED] wrote: Ok... one of my favorite Urban Legends is this one: The book is always right. In other words, if it's written down in a book we bought off of Amazon, it must be so. So, I'd like to ask, without anyone taking potshots at specific authors, what is the dumbest, silliest, or most technically incorrect thing you have ever seen in an Oracle book? RF Robert G. Freeman - Oracle8i OCP Oracle DBA Technical Lead CSX Midtier Database Administration The Cigarette Smoking Man: Anyone who can appease a man's conscience can take his freedom away from him. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Freeman, Robert INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). = Connor McDonald http://www.oracledba.co.uk (mirrored at http://www.oradba.freeserve.co.uk) Some days you're the pigeon, some days you're the statue __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-1?q?Connor=20McDonald?= INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Anjo Kolk INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
