How do I drop a tablespace in MySQL?

How do I drop a tablespace in MySQL?

In the target database:

1. Create the target table. CREATE TABLE
2. Discard the tablespace to remove . idb file. ALTER TABLE DISCARD TABLESPACE.
3. Copy the . cfg and . idb files from the temporary location to the target database.
4. Import the tablespace. ALTER TABLE IMPORT TABLESPACE.

How do I drop a tablespace?

Introduction to Oracle DROP TABLESPACE statement

1. First, specify the name of the tablespace that you want to drop after the DROP TABLESPACE keywords.
2. Second, use the INCLUDE CONTENTS to delete all contents of the tablespace.

How do I drop a MySQL schema?

DROP DATABASE using MySQL Workbench First, launch the MySQL workbench and log in to the MySQL Server. Second, right-click the database that you want to remove, for example, testdb2 and choose the Drop Schema… option. Third, MySQL Workbench displays a dialog to confirm the deletion.

How do I drop a datafile?

You use the DROP DATAFILE and DROP TEMPFILE clauses of the ALTER TABLESPACE command to drop a single datafile or tempfile. The datafile must be empty. (A datafile is considered to be empty when no extents remain allocated from it.)

Can we drop tablespace?

You can drop a tablespace regardless of whether it is online or offline. Oracle recommends that you take the tablespace offline before dropping it to ensure that no SQL statements in currently running transactions access any of the objects in the tablespace. You cannot drop the SYSTEM tablespace.

How do I know if datafile is offline?

Bring All Data Files Online Connect sys/password as sysdba in sqlplus and run the following query to find which datafiles are offline: Select file# from v$datafile where status = ‘OFFLINE’; Note all file# numbers that are returned.

Can not drop the default permanent tablespace?

Sometimes you can get “ORA-12919: Can not drop the default permanent tablespace ” error. You cannot drop the default tablespace of database because of new objects. You should firsly change the default tablespace of database to new tablespace as follows. Then you can drop it as follows.

How does the drop tablespace statement work in MySQL?

This statement drops a tablespace that was previously created using CREATE TABLESPACE. It is supported with all MySQL NDB Cluster 7.5 releases, and with InnoDB in the standard MySQL Server as well. ENGINE sets the storage engine that uses the tablespace, where engine_name is the name of the storage engine.

Is it possible to drop all tables in a database?

A DROP DATABASE operation can drop tables that belong to a general tablespace but it cannot drop the tablespace, even if the operation drops all tables that belong to the tablespace. The tablespace must be dropped explicitly using DROP TABLESPACE tablespace_name .

When to use on delete Cascade clause in MySQL?

ON DELETE CASCADE clause in MySQL is used to automatically remove the matching records from the child table when we delete the rows from the parent table. It is a kind of referential action related to the foreign key. Suppose we have created two tables with a FOREIGN KEY in a foreign key relationship, making both tables a parent and child.

How to drop a table in MySQL 8.0.14?

The UNDO keyword, introduced in MySQL 8.0.14, must be specified to drop an undo tablespace. Only undo tablespaces created using CREATE UNDO TABLESPACE syntax can be dropped. An undo tablespace must be in an empty state before it can be dropped. For more information, see Section 15.6.3.4, “Undo Tablespaces”.