Recently I encountered a problem with MySQL, It was showing an error “Error : 1067 the process terminated unexpectedly” when I tried to start the service in services.msc
So I googled it but didn’t found the perfect solution. I will show how can you debug the issue. First look for file my.ini which can be found in “C:\wamp\bin\mysql\mysql5.6.17” , open that file on look for “log-error”, this will show you the path where error log is stored. In my case it is, “c:/wamp/logs/mysql.log”.
Open the log file and look for last error you got, you should be today’s date when you tried to start the wampmysqld from services. At this stage, you will get error and understand what it say. In my case it is,
InnoDB: Attempted to open a previously opened tablespace. Previous tablespace kmk/players uses space ID: 58 at filepath: .\kmk\players.ibd. Cannot open tablespace ocean/acos which uses space ID: 58 at filepath: .\ocean\acos.ibd
InnoDB: Error: could not open single-table tablespace file .\ocean\acos.ibd
InnoDB: We do not continue the crash recovery, because the table may become
InnoDB: corrupt if we cannot apply the log records in the InnoDB log to it.
InnoDB: To fix the problem and start mysqld:
InnoDB: 1) If there is a permission problem in the file and mysqld cannot
InnoDB: open the file, you should modify the permissions.
InnoDB: 2) If the table is not needed, or you can restore it from a backup,
InnoDB: then you can remove the .ibd file, and InnoDB will do a normal
InnoDB: crash recovery and ignore that table.
InnoDB: 3) If the file system or the disk is broken, and you cannot remove
InnoDB: the .ibd file, you can set innodb_force_recovery > 0 in my.cnf
InnoDB: and force InnoDB to continue crash recovery here.
Looking at error, it seems that there is some problem with “kmk\players.ibd” , here kmk it one of the my database. The folders for all databases are in “C:\wamp\bin\mysql\mysql5.6.17\data”. To fix I moved kmk folder to some other place. After this, wampmysqld in services.msc is getting started without any error.
That fixed my error.
Share your experience and error in log file in comment section. This will also prevent other from reinstalling wamp server.