The startup services required to start the Oracle database include: Oracle TNS Listener (for connection request routing) Oracle Database Service (for managing database instances) Oracle Server Manager (for internal process management) Oracle Log Writer Process (for writing redo log files) Oracle Checkpoint Process (for writing to data files) Oracle Process Monitor (for monitoring and restarting processes) Oracle Lock Manager (for managing locks and latches
Startup services required for Oracle database
To enable Oracle database, you need to start the following services:
1 . Oracle TNS Listener (LSTNR)
- is used to listen for connection requests from client applications and route them to the appropriate database instance. 2. Oracle Database Service (DBSMON)
is responsible for starting and managing database instances, including management processes, memory and resource allocation
- ##. #3. Oracle Server Manager (SMON)
##Automatically manages the internal processes of the Oracle database, including recovering crashed processes, rolling back failed transactions, and cleaning up temporary data #.
##4. Oracle Log Writer Process (LGWR)5. Oracle Checkpoint Process (CKPT)
- ## Regularly writes the dirty buffer in the database buffer pool to the data file. to ensure that submitted data will not be lost in the event of a system failure.
6. Oracle Process Monitor (PMON)
- Monitor others. The status of database processes and restarting them when processes fail.
7. Oracle Lock Manager (LCK0)
- Manages the status of database processes. Locks and latches to coordinate concurrent access to database resources
8. Oracle Archiver Process (ARCn)
- ##When archive logging is enabled. , copies all completed portions of the online redo log files to the archived redo log files.
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