For many times I have done successfully the same sequence for restoring the database commerce_db_622:
Go to the directory /usr/local/mysql/data and perform the command:
sudo rm -rf COMMERCE_DB_622.
This drops the database COMMERCE_DB_622
Start the DB client :
mysql –u root
Run the following script to create the database:
CREATE DATABASE COMMERCE_DB_622 /*!40100 DEFAULT CHARACTER SET utf8 */;
Move to the directory that stores the dump file COMMERCE_DB_622.sql and run the following command:
mysql -u root COMMERCE_DB_622 < COMMERCE_DB_622.sql
This worked fine but suddenly today I am starting getting the error with the valid already checked backup file.
ERROR 1813 (HY000) at line 25: Tablespace for table '
commerce_db_622
.batch_job_execution
' exists. Please DISCARD the tablespace before IMPORT.
I deleted the database using the following: cd data; sudo rm -rf COMMERCE_DB_622;
However, the important thing is always in the beginning use the regular remove SQL: DROP DATABASE COMMERCE_DB_622
If the "DROP DATABASE" SQL results in error then one can remove the data using the remove directory command.