In SQL Server the GETDATE function returns the current date and time with milliseconds precision without the time zone for the current database instance.
In Oracle you can use the SYSTIMESTAMP function but it includes time zone.
SQL Server:
-- Get the current date and time with milliseconds precision SELECT GETDATE(); # 2024-07-28 13:13:11.640
Oracle:
-- Get the current date and time SELECT SYSTIMESTAMP FROM dual; # 2024-07-28 13:13:11.640000 +03:00
For more information, see SQL Server to Oracle Migration.