When you type the correct password, the mysql> prompt appears. To check the sizes of all of your databases, at the mysql> prompt type the following command: CopySELECT table_schema AS "Database", ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) AS "Size (MB)" FROM ...
In this article, I will show you how to check the size ofMySQL/MariaDBdatabases and tables via the MySQL shell. You will learn how to determine the real size of a database file on the disk as well as size of data that it present in a database. Read Also:20 MySQL (Mysqladmin) Co...
Since MariaDB database has kept all the data’s in the filesystem so, we can easily check size of the databases and tables by navigating to the following foldervar/lib/mysql/. It won’t give you an accurate size but no major difference in the size when you comparing with the MySQL/Ma...
MySQL’s InnoDB storage engine uses a fixed size (circular) Redo log space. The size is controlled byinnodb_log_file_sizeandinnodb_log_files_in_group(default 2). Youmultiply those values and get the Redo log space that available to use. While technically it shouldn’t matter whether you c...
"Simple" SQL to check for alpha or numeric charcters isn't working right "String or binary data would be truncated.\r\nThe statement has been terminated." "String or binary data would be truncated" and field specifications “Unable to enlist in the transaction” with Oracle linked serve...
Starting from MySQL 8.0.30, the variable that should be tuned for optimizing the Redo Logs is innodb_redo_log_capacity, and we start with good news here: It’s dynamic! So you won’t have downtime if you need to tune this. MySQL versions before 8.0.30: innodb_log_file_size and inno...
1) key_cache_block_size (1024) 2) transaction_alloc_block_size (8192) 3) transaction_prealloc_size (4096) Values in the bracket are the values of the dB servers. This is asked so that they can calculate the IOPS for the application (MySQL in this case). ...
MySQL command directly provides a way to restore and dump data to MySQL. mysql -u [username] -p [database] < [dump_file].sql Example: mysql -u root -p testdb < dump.sql Note:Don’t specify the database in the above command if your dump includes multiple databases. ...
I have a large database. I removed almost half of the data/rows. Now i need to reduce the size of the database file as I need more disk space for the database file.What should I do in details please.Thanks.All replies (3)
Use the table description file to create new (empty) data and index files: $> mysql db_name mysql> SET autocommit=1; mysql> TRUNCATE TABLE tbl_name; mysql> quit Copy the old data file back onto the newly created data file. (Do not just move the old file back onto the new file....