Problem description
Recently, when backing up MySQL data, an error was found in dump database:
mysqldump: Got error: 1556: "You can't use locks with log tables." when using LOCK TABLES
Solution steps:
Checked because there are two table locks in the dump MySQL library.
Add --lock-tables =0 after mysqldump instruction.
Summary
Mysqldump backup will turn on the lock table by default – opt is turned on by default, which will affect the online business when backing up big data
To prevent this, we can use --skip-opt to cancel this default option in backup After adding this parameter, the above error report will not appear.
mysqldump --skip-opt -h<host> -u<user> -p<password> -A >> backup.sql --Perform full backups
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