How do I control multiplexing files?

How do I control multiplexing files?

How do I control multiplexing files?

Multiplexing Control Files using the init.ora file

  1. Shut down the database.
  2. Copy the control file to more locations using operating system command.
  3. Change the initialization parameter to include new file in the parameter CONTROL_FILES.
  4. Start the instance.

What are the steps to multiplex control file using Pfile and Spfile?

1. SPFILE

  1. Step1. 1: Validate existing control files.
  2. Step 1.2: Add new control file to SPFILE.
  3. Step 1.3: Stop database.
  4. Step 1.4: Copy the control file to a new location.
  5. Step 1.5: Start the database in normal mode.
  6. Step 1.6: Validate control files.
  7. Step2.
  8. Step 2.2: Create PFILE using SPFILE.

Why we do control file multiplexing?

As a DBA, it’s your responsibility to multiplex control files to protect your organization in case of possible data loss due to media failure or control file corruption. Creating a copy of controlfile in a new location with a new name .

What is the use of control file in Oracle?

A control file is a small binary file that is part of an Oracle database. The control file is used to keep track of the database’s status and physical structure. Every Oracle Database must have at least one control file.

How do I redo multiplex log files?

When redo log files are multiplexed, LGWR concurrently writes the same redo log information to multiple identical redo log files, thereby eliminating a single point of redo log failure. Multiplexing is implemented by creating groups of redo log files. A group consists of a redo log file and its multiplexed copies.

What is control file in database?

A control file is a small binary file that records the physical structure of the database and includes: The database name. Names and locations of associated datafiles and online redo log files. The current log sequence number. Checkpoint information.

How do you edit a control file?

Shut down the database. Copy an existing control file to a new location, using operating system commands. Edit the CONTROL_FILES parameter in the database initialization parameter file to add the new control file name, or to change the existing control filename. Restart the database.

What does a control file contain?

A control file is a small binary file that records the physical structure of the database and includes: The database name. Names and locations of associated datafiles and online redo log files.

What are Oracle control files?

Every Oracle Database has a control file, which is a small binary file that records the physical structure of the database. The control file includes: The database name. Names and locations of associated datafiles and redo log files. The timestamp of the database creation.