You need to learn the concept of transactions. First of, before doing work, you can set a savepoint, remember it wont be saved, its just a point. savepoint s1; Later do some work, and if you like you can save it using :- commit; or commit s1; If you want to undo, rollback to...
UPDATE HumanResources.Employee SET SickLeaveHours = SickLeaveHours - 8 WHERE BusinessEntityID = 4; -- Undo the changes to the database from session 1. -- This will not undo the change from session 2. ROLLBACK TRANSACTION; GO B. Work with READ COMMITTED i...
{ AES_128 | AES_192 | AES_256 | TRIPLE_DES_3KEY } , encryptor_options ) <encryptor_options> ::= SERVER CERTIFICATE = Encryptor_Name | SERVER ASYMMETRIC KEY = Encryptor_Name <log_specific_options> [ ,...n ]::= --Log-specific Options { NORECOVERY | STANDBY = undo_file_name } |...
Connections <connection-name> Container Database (CDB) Database Configuration Initialization Parameters Automatic Undo Management Current Database Properties Restore Points View Database Feature Usage Database Status Status DB Instance Data Guard Data Pump Export Jobs Import Jobs Oracle Sharding Performance ...
Full support for transactional DDL. The default scripts ensure that all migrations occur within a transaction - for those databases which support this (Postgresql, Microsoft SQL Server), migrations can be tested with no need to manually undo changes upon failure. ...
that they want to accept the results of the operation. Then the user can executeCOMMIT TRANSACTIONto commit all work done by the repair operation. If the user doesn't want to accept the results of the operation, they can execute aROLLBACK TRANSACTIONto undo the effects of the repair ...
Fixed an issue that could crash in the Undo manager when switching between code view, design view, and query editor window Fixed an issue that might have caused the parameter pane to disappear after runtime error Fixed an issue with Report Projects that might have caused them to lose source ...
If you have appropriate privileges, you can click the Undo SQL subtab to select and review the syntax required to undo changes. For information about using the Flashback Table feature, see Oracle Database Backup and Recovery User's Guide. 1.3.27 Triggers Triggers are stored PL/SQL blocks ...
There is no Undo operation for deleting a shared data source. However, if you accidentally delete a shared data source, you can create a new one using the same property values as the one you deleted. You will have to open each report, model, and data-driven subscription to rebind the sh...
In Oracle 9i, Oracle introduced the UNDO tablespace concept, which replaces the rollback segment. To prevent the "snapshot too old" error in Oracle 9i, it is recommended that you: Create an UNDO tablespace with an appropriate amount of free space. Set the retention guarantee on the tablespac...