What files does the oracle database contain?

Oracle database contains the following file types: Data files: store data and metadata. Log files: Records changes for consistency, including redo and undo log files. Control file: stores structure and configuration information. Parameter file: Contains operation configuration parameters. Temporary tablespace file: stores temporary data. Rollback segment file: stores log records of undo changes. Profile: Stores object metadata information. Diagnostic files: records database activity and error messages.

##Oracle Database Files

Data files (DBF)

#store all user data and metadata in the database.
• At least one data file is required to create the database.

Log File (LGF)

Records all changes made to the database to ensure database consistency.
• There are two types of log files:
  Redo log file (REDO)
  • Undo log file (UNDO)

Control file (CTL)

• Stores important information about the database structure and configuration, such as:
  Location of data files
  • Location of log files
  • Database name and instance number

Parameter file ( PFILE and SPFILE)

• #Contains configuration parameters that affect database operations.
  PFILE (physical parameter file): stored in the file system.
  • SPFILE (server parameter file): stored in the database and can be dynamically updated.

Temporary tablespace file

Stores temporary data, such as data required for operations such as sorting, grouping, and joining .

Rollback segment file

Stores the log records needed to undo changes.

Profiles

Contains metadata information about database objects such as tables, indexes, views, and stored procedures.

Diagnostic files

Records diagnostic information for database activity and error messages.

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