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Q: 

MySQL Error 1205: Lock wait timeout exceeded

I'm using SQLyog to sync a production database to a dev db. On 4 tables, I'm getting:

Error No. 1205 Lock wait timeout exceeded; try restarting transaction

Researching the web seems to indicate that a transaction has begun, locked tables, but has not committed. One post said to SHOW PROCESSLIST; but the only processes appear to be my own, via SQLyog.

I have also tried a Restart of MySQL, but that didn't help either.

As a relative novice in MySQL, I'm stuck: I can't determine what transaction or process is locking the tables, nor how to clear this situation.

Any suggestions would be gratefully accepted!

MTIA

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