DB_FLASHBACK_RETENTION_TARGET specifies the upper limit (in minutes) on how far back in time the database may be flashed back. How far back one can flashback a database depends on how much flashback data Oracle has kept in the flash recovery area.

By default, the change tracking file is created as an Oracle managed file in DB_CREATE_FILE_DEST.

Oracle Database provides database resource management capability through its Database Resource Manager. The main goal of the Database Resource Manager is to give the Oracle Database server more control over resource management decisions, thus circumventing problems resulting from inefficient operating system management.

DBVERIFY is an external command-line utility that performs a physical data structure integrity check. It can be used on offline or online databases, as well on backup files. You use DBVERIFY primarily when you need to ensure that a backup database (or datafile) is valid before it is restored, or as a diagnostic aid when you have encountered data corruption problems.

You must have a flash recovery area enabled, because flashback logs can only be stored in the flash recovery area. For Real Application Clusters databases, the flash recovery area must be stored in a clustered file system or in ASM.

When flashback is enabled or when there are guaranteed restore points, the background process RVWR writes flashback data to flashback database logs in the flash recovery area.

Database Resource Manager (DRM) allocates resources among resource consumer groups based on a resource plan. A resource plan consists of resource plan directives that specify how resources should be distributed among the groups. Resource consumer groups are categories to which user sessions can be assigned. These groups can then be allocated resources through plan directives.

WITH GRANT OPTION
Specify WITH GRANT OPTION to enable the grantee to grant the object privileges to other users and roles.

Use the MERGE statement to select rows from one or more sources for update or insertion into a table or view. You can specify conditions to determine whether to update or insert into the target table or view.

An inconsistent backup, also known as an online backup, is performed while the database is open and available to users. The backup is inconsistent because the SCN in the control file is most likely out of synch with the SCN in the header of the datafiles. Inconsistent backups require recovery when they are used for recovering from a media failure, but keep availability high because the database is open while the backup is performed.

REMAP_SCHEMA=source_schema:target_schema

Loads all objects from the source schema into a target schema.