The 2021 Oman Open has been postponed due to the pandemic.
From the European Tour, 29 January 2021:
The Oman Open, scheduled to take place from March 4-7 at Al Mouj Golf in Muscat, has been postponed due to the ongoing threat of COVID-19.
The decision was made following an announcement by Oman's Supreme Committee that all gatherings, international functions and sporting events are to be stopped in the country with immediate effect.
All parties are looking into the possibility of rescheduling the tournament at some point later in the year, but there are no definitive plans at this stage.