Holding residence permits of 2 GCC countries...

Although your question is not clear, here is the following information:
It is if a foreign person obtains residency in more than one country of the Gulf Cooperation Council.
This is not a legal problem in and of itself.
We advise against obtaining a work contract in more than one country in the Gulf Cooperation Council
So that you do not terminate the employment contract illegally and also avoid imposing a ban against you because of that.