… we either recover the structure from .frm files or take it from some old backup. A new tool sys_parser can recover the table… from .frm files over taken from backups. But in some cases even .frm files is not an option: Table was dropped and innodb_file_per_table is ON Frm file corrupt, zeroed out…
Post: Recovering CREATE TABLE statement from .frm file
December 17, 2008 By 5 Comments
So lets say you have .frm file for the table and you need to recover CREATE TABLE statement for this table. In particular… between. So how to recover CREATE TABLE from .frm file ? Recovering from .frm for Innodb Table If we simply copy .frm file back to the database we… (HY000): Lost connection to MySQL server during query Recovering CREATE TABLE from .frm file for MyISAM Table We do not really need this…
Post: MySQL Crash Recovery
July 30, 2006 By 30 Comments
… cases using Innodb for tables which you need to be recovered fast is better solution. Innodb Recovery – Unless you have some… created in Innodb dictionary but .frm not created or not completely written. Partially written .frm files or .frm being unsync with internal Innodb dictionary… is much less. Still if failure happens just during writting .frm file nasty things may happen, not to mention such potentially multiple…
Post: Concatenating MyISAM files
November 19, 2012 By 5 Comments
…and so on for the 16 files. Since MyISAM are flat files, that should be faster, especially with…@django:/var/lib/mysql/test# ls test_concat.frm test_concat.MYD test_concat.MYI … myisamchk -rq test_concat – check record delete-chain – recovering (with sort) MyISAM-table ‘test_concat’ Data records: 3…
Post: MySQL Backup tools used by Percona Remote DBA for MySQL
March 13, 2013 By 8 Comments
… that server A disk failed, and RAID array does not recover You run into a InnoDB corruption bug that propagates via…. This will rsync a copy of all the frm files and all the MYD/MYI files. It then does a second rsync while… greatly cut down on the lock time by syncing the frm files. Enable –slave-info when backing up from a slave so…
Post: How Percona does a MySQL Performance Audit
November 24, 2008 By 17 Comments
…. Is it the current performance, future performance, scalability, ability to recover from disasters? We also want to know what the operating…:00 /bin/sh /usr/bin/mysqld_safe –defaults-file=/etc/my.cnf –pid-file=/var/run/mysqld/mysqld.pid –log-error=/var… investigated. You might find that there are InnoDB tables whose .frm files exist but have been dropped from InnoDB, for example. (The…
Comment: Recovering CREATE TABLE statement from .frm file
December 17, 2008 By 5 Comments
when I run this query to recover my data : mysql> insert into test_innodb values(1,2,3,4,5,6,7,8,9); it returns ERROR 2013 (HY000): Lost connection to MySQL server during query and no row recovered from .frm file
Comment: Recovering Innodb table Corruption
July 4, 2008 By 22 Comments
Hey , thanks but I have a serious problem in recovering some innodb mysql tables I discussed it here : http://stackoverflow.com/questions/6224158 Problem is that I just have .frm file of a table and no backup Please help me , this is very important to us
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
… innodb_fast_shutdownblogpercona.commanual innodb_file_formatblogpercona.commanual innodb_file_format_checkblogpercona.commanual innodb_file_format_maxblogpercona.commanual innodb_file_per_tableblogpercona.commanual innodb….commanual myisam_max_sort_file_sizeblogpercona.commanual myisam_mmap_sizeblogpercona.commanual myisam_recoverblogpercona.commanual myisam_recover_optionsblogpercona.commanual myisam_recover_optionsblogpercona.commanual myisam…
Comment: Can you Trust CHECK TABLE ?
September 12, 2008 By 6 Comments
… file? Seems like he can only reasonably be expected to compare the data in the MYD with the data in the FRM…’t reasonably be expected to recover from. Like going out and deleting the binary log from the file system and then opening…
