yea, he's right, it may be error log file Nitin
----- Original Message ----- From: "Chris Nolan" <[EMAIL PROTECTED]> To: "Leo Huang" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Wednesday, November 05, 2003 5:53 AM Subject: Re: InnoDB Questions > The "last one" you're referring to - could it be the error log? > > The log files will only grow to a pre-determined limit. These log files > are used to ensure that transactions maintain their durability. > > With Oracle, you'd want to be careful. Oracle gets very, very picky > about the stuff underneath it when it's running. If it gets to a > configuration limit, the results can be very, very depressing. Having to > extend tablespaces by hand is a very common Oracle DBA task. > > Regards, > > Chris > > Leo Huang wrote: > > >Hello Nitin, > > > >From the timestamp of the log files, it seems that the first two files > >works together while the last one seems just sitting there, doesn't do > >anything. > > > >Also, will the log files getting bigger and bigger in the future?? If so > >how should I deal with them? > > > >For your last suggestion, what will Oracle do if I specify a datafile > >size less than the database size, e.g. I specify 20M in the my.cnf while > >there are actually 400M of data in my database? > > > >Leo > > > >Nitin wrote: > > > > > > > >>Hello, > >> > >>first things first, you cann't resize your datafiles without shutting down > >>your database. if it's ok with you, have a look at > >>http://www.mysql.com/doc/en/Adding_and_removing.html > >> > >>you may want to have a look at you my.cnf file, stored in mysql data dir or > >>in /etc dir, for the default options specified there fo the datafile with: > >> > >>innodb_data_file_path > >> > >>Yes, you can add data file, just add another entry to above option. option > >>entry is self-explainatory. > >> > >>At last, ibdata1, ibdata2.... are actual data files used to store actual > >>data. one or more of these files are attached to one tablespace and one file > >>cant span across tablespaces. > >> > >>ib_logfile0, ib_logfile1 are log files, which are used to log sql statements > >>applied to database. these files are used to restore data in case of any > >>crash or mishap. > >> > >>for further info, have a look at: > >>http://www.mysql.com/doc/en/InnoDB_start.html > >> > >>Enjoy > >>Nitin > >> > >> > >>----- Original Message ----- > >>From: "Leo Huang" <[EMAIL PROTECTED]> > >>To: <[EMAIL PROTECTED]> > >>Sent: Tuesday, November 04, 2003 6:28 PM > >>Subject: InnoDB Questions > >> > >> > >> > >> > >> > >> > >>>Hello, > >>> > >>>I have a few questions about InnoDB. > >>>I am new to InnoDB, and just converted my MyISAM tables into InnoDB a > >>>few days ago. > >>>I notice that it generates these files > >>> > >>>-rw-rw---- 1 mysql mysql 2560 Nov 2 13:07 > >>>ib_arch_log_0000000000 > >>>-rw-rw---- 1 mysql mysql 790626304 Nov 4 20:44 ibdata1 > >>>-rw-rw---- 1 mysql mysql 10485760 Nov 4 20:44 ib_logfile0 > >>>-rw-rw---- 1 mysql mysql 10485760 Nov 4 20:44 ib_logfile1 > >>>-rw-rw---- 1 mysql mysql 10485760 Nov 3 00:02 ib_logfile2 > >>> > >>>But how can those files work together? > >>> > >>>In InnoDB documentation, it suggests to add another file ibdata2 to > >>>get higher performance. Can I do that now, after I have created the > >>>ibdata1 and used it for a while? > >>> > >>>The most important thing is I deleted a 300M database, but the ibdata1 > >>>remains the same size. MyPHPAdmin says 330,000KB free. How can I make > >>>the data file smaller? > >>> > >>>I will be really appreciated if someone can briefly describe what's > >>>happening to those files or point me to some articles. > >>> > >>>Thanks a lot, > >>>Leo > >>> > >>> > >>>-- > >>>MySQL General Mailing List > >>>For list archives: http://lists.mysql.com/mysql > >>>To unsubscribe: > >>> > >>> > >>> > >>> > >>http://lists.mysql.com/[EMAIL PROTECTED] > >> > >> > >> > >> > >> > >> > >> > >> > > > > > > > > > > > > > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] > -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
