Missing or Deleted .frm File May Cause Table Corruption
MySQL Server database stores data dictionary information ultimately .frm files that it stores in database article submission sites. On the other hand, InnoDB storage engine keeps information in individual data dictionary in tablespace files. When you move the .frm file pesticides server gets crashed in halfway of any data dictionary procedure, locations of .frm files might wind up out of the synchrony with locations recorded in InnoDB inner data glossary. In such circumstances, the database may become inconsistent and inaccessible. At this point, you need to opt for MySQL Recovery to gain access of one's valuable data in MySQL database.
The out-of-sync data dictionary situation can be indicated by various symptoms. One associated with this problem would be 'Create Table' statement does not performance. When this situation occurs, you should check the error log of system. If the error log indicates that table already exists in InnoDB internal data dictionary, there is an orphaned table in InnoDB tablespace files, which does not have corresponding .frm initiate.
You are permitted to drop orphaned table, using the steps given in error message. If you can't run 'Drop Table' command successfully, problem may be as a consequence of name completion in MySQL client. To work through this issue, start MySQL client with -skip-auto-rehash option and attempt using Drop Table command.
Another symptom for this out-of-sync issue with data dictionary may be the error message that MySQL gives anyone try to open a database table:
'ERROR 1016: Can't open file: 'child2.InnoDB'. (errno: you.'
In error log of MySQL, you can see the below message:
'InnoDB: Cannot find table test/child2 at an internal data dictionary
InnoDB: of InnoDB though the .frm register for the table exists. Perhaps you
InnoDB: have deleted and recreated InnoDB data files but have forgotten
InnoDB: to delete the corresponding .frm files of InnoDB tables?'
This behavior of MySQL database indicates corruption on the database tables and it is advisable to restore them from backup to Repair MySQL Data source.
In the else case, you can use third-party MySQL Repair software. These applications are able to repair and restore damaged MySQL database table in original state, without altering original data and structure. The absolutely Recover MySQL database through high-end scanning techniques, with each of the database solutions.
MySQL is really a powerful application to restore all in the MySQL database objects pertaining to instance table, tablespace, queries, report, form, view, and far more. The software is designed for MySQL all five.x and 4.x. It works well with both InnoDB and MyISAM storage engines of MySQL.