How does Oracle automatically generate timestamps?

In Oracle database, you can use the `CURRENT_TIMESTAMP` function to generate the current timestamp. This function will return the current date and time. You can use this function in INSERT or UPDATE statements to automatically insert the current timestamp into a specific column of a table. For example:

INSERT INTO your_table (timestamp_column) VALUES (CURRENT_TIMESTAMP);

This will insert the current timestamp in the `timestamp_column` column of the `your_table` table. You can also use defaults when creating the table to automatically insert timestamps. For example:

CREATE TABLE your_table (
  id INT,
  timestamp_column TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

This will create a table called ‘your_table’ with a column named ‘timestamp_column’ having the current timestamp as its default value.