Restoring MySQL InnoDB Files on Windows
The InnoDB type files were a more difficult task, and that is why I am writing this post. I had a hard time finding out how to do it, but I pieced together enough information to accomplish the task. Now, in an effort to give back, I’ll explain exactly what I did to get it restored.
In our back-ups we had the following files:
\MySQL\MySQL Server 4.1\data\ibdata1 \MySQL\MySQL Server 4.1\data\ib_logfile0 \MySQL\MySQL Server 4.1\data\ib_logfile1
Plus, in the data folder there were was a folder with the name of the database I was restoring that contained
*.frm
files (table_name.frm
).I did the restore on my development machine rather than the actual server because I didn’t want to screw up what was working on the server. I already had MySQL installed from an XAMPP install. (My development box is running Windows XP SP2). XAMPP installs MySQL a little differently than the regular MySQL install, so if it helps to follow what I did here, you may want to install it.
I first stopped my MySQL service using XAMPP’s control panel.
I moved the files listed above (
ib*
files and the folder containing the*.frm
files) to the my local mysql data folder (C:\Program Files\xampp\mysql\data
).I then edited
my.cnf
(located inC:\Program Files\xampp\mysql\bin
) and made the following changes (starting at line 66 for me):OLD:
skip-innodb #innodb_data_home_dir = C:/Program Files/xampp/mysql/data/ #innodb_data_file_path = ibdata1:10M:autoextend #innodb_log_group_home_dir = C:/Program Files/xampp/mysql/data/ #innodb_log_arch_dir = C:/Program Files/xampp/mysql/data/ #set-variable = innodb_buffer_pool_size=16M #set-variable = innodb_additional_mem_pool_size=2M #set-variable = innodb_log_file_size=5M #set-variable = innodb_log_buffer_size=8M #innodb_flush_log_at_trx_commit=1 #set-variable = innodb_lock_wait_timeout=5
NEW:
#skip-innodb innodb_data_home_dir = C:/Program Files/xampp/mysql/data/ innodb_data_file_path = ibdata1:10M:autoextend innodb_log_group_home_dir = C:/Program Files/xampp/mysql/data/ innodb_log_arch_dir = C:/Program Files/xampp/mysql/data/ set-variable = innodb_buffer_pool_size=16M set-variable = innodb_additional_mem_pool_size=2M set-variable = innodb_log_file_size=170M set-variable = innodb_log_buffer_size=8M innodb_flush_log_at_trx_commit=1 set-variable = innodb_lock_wait_timeout=50
(I had to set innodb_log_file_size to the actual size of my log file)
I then edited the XAMPP batch file that starts the mysql service (
C:\Program Files\xampp\mysql_start.bat
). I added–innodb_force_recovery=6
to the end of the call to mysqld. So line 8 of that file now read:mysql\bin\mysqld –defaults-file=mysql\bin\my.cnf –standalone –console –innodb_force_recovery=6
This did the trick! My databases were recovered on my machine. I used SQLyog to do a sql dump of the database to restore it on our production server.
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