… InnoDB: Import: The extended import of data is being started. InnoDB: Import: 9 indexes have been detected. InnoDB: Progress in %: 1 2 3 4…number 6087296438643. InnoDB: Your database may be corrupt or you may have copied the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB: http…
Post: Recovering Innodb table Corruption
July 4, 2008 By 19 Comments
… 1487506025 InnoDB: Page number (if stored to page already) 7, InnoDB: space id (if created with >= MySQL-4.1.1 and stored already) 6353 InnoDB: Page… Percona we offer assistance in MySQL Recovery, including recovery from Innodb corruptions and deleted data.
Post: Heikki Tuuri answers to Innodb questions, Part II
November 4, 2007 By 13 Comments
… 6 tables, what version of Innodb/MySQL would you recommend? I’ve been staying at 4.1.14 because of all the bad… MySQL 5.0 vs 4.1 has a lot of performance differences and not all of them are Innodb specific and it well… to Oracle? HT: You are right, bugs that cause data corruption, crashes, or wrong query results get the highest priority. We…
Post: MySQL Crash Recovery
July 30, 2006 By 26 Comments
… penalty. If using Innodb you also might with to use innodb-safe-binlog option in MySQL 4.1 so your Innodb log and binary log are synchronized. In MySQL 5.0 XA is taking care of this synchronization. .frm Corruption… being unsync with internal Innodb dictionary may cause MySQL to fail with wierd error messages. In MySQL 4.1 sync_frm option was…
Post: Connecting orphaned .ibd files
May 13, 2011 By 12 Comments
… situation when you have to: 1. ibdata1 is erroneously removed 2. ibdata1 is heavily corrupted and innodb_force_recovery doesn’t help Chris…_name N_FIELDS: 1 TYPE: 0 SPACE: 15 PAGE_NO: 4 2 rows in set (0.00 sec) In InnoDB world actor.ibd…_NO 4 /* starting from 4.1.x this contains the space id of the page */ So, space_id is 4 bytes written to every InnoDB…
Comment: A recovery trivia or how to recover from a lost ibdata1 file
June 3, 2011 By 7 Comments
Justin , Since 4.1 space id is stored at 0×22-0×25 position. Before it was first 4 bytes of the page header (See table “InnoDB Page Header” in http://www.mysqlperformanceblog….mysql.com/wiki/MySQL_Internals_InnoDB and http://www.slideshare.net/akuzminsky/recovery-of-lost-or-corrupted-inno-db-tablesmysql-uc-2010…
Post: Make your file system error resilient
August 24, 2011 By 8 Comments
…this problem is limited to EXT2/3/4 while over systems like XFS will not…-29c3ac1f4b32 Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr…Innodb is very sensitive to corruptions and if any of file system errors are reported back to MySQL/Innodb…
Post: Recover BLOB fields
July 1, 2010 By 4 Comments
… are identified by 8-bytes number index_id. The highest 4 bytes are always 0, so index_id is often notated… maximum field size. The highest bit of the offset is 1 if the field is stored in external pages (i.e… %x’); * – there is a typo in Recovery of Lost or Corrupted InnoDB Tables Presentation
Post: Small things are better
October 8, 2006 By 15 Comments
…fun time repairing 1.5Tb ext3 partition, containing many millions of files… RAID volume, ECC memory and reliable CentOS 4.4 distribution but still it did. We had “…Innodb tables. They are designed to never crash, surviving power failures and even partial page writes but still they can get corrupted…
Comment: Should you move from MyISAM to Innodb ?
January 12, 2009 By 53 Comments
…Dale, Hi, 1. Most DBAs and companies (I’ve met and seen a … the time for a REPAIR TABLE on your MyISAM’s corrupted table. You say you need to prepare for a “really… the types of queries you run against the storage engine. 4. InnoDB is far from being perfect. 5. Are you using a…
