Have you seen this error before? This is because you’re trying to dump the performance_schema database while locking tables.
The full error you received probably looks something like:
mysqldump: Got error: 1142: SELECT,LOCK TABL command denied to user ‘root’@’localhost’ for table ‘cond_instances’ when using LOCK TABLES
This probably means you’re trying to backup all of your databases at once.. you don’t need to back up the performance_schema database (and information_schema) anyway – so just exclude it and you won’t see this error anymore!
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$ ./mysqldump -u root -p --all-databases --ignore-database=performance_schema --ignore-database=information_schema |
(Though, there’s a better way to backup all of your mysql databases…)
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