The default storage engine can be changed at server startup or at runtime:
- The default storage engine can be specified at server startup with the --default-storage-engine option.
- For a running server, an administrator who has the SUPER privilege can change the default storage engine globally for all clients by setting the global storage_engine system variable:
SET GLOBAL storage_engine = engine_name;
Setting the storage engine this way affects any client that connects after the statement executes. Clients that are connected at the time of statement execution are unaffected.
- Any client can change its own default storage engine by issuing either of these statements:
SET SESSION storage_engine = engine_name;
SET storage_engine = engine_name;