I am trying to shutdown my databse but continually get an error
messaging saying that my switch combination is incorrect. Any of
these three statments cause the same error.

gfix -sh -f 100 mydatabase.....
gfix -sh -f 0 mydatabase.....
gfix -sh -f mydatabase.....

This right out of page 841 of The Firebird Book.

Using

gfix -sh -at 100 mydatabase..... works fine but I wnat to use the
forced shutdown method.

Any help would be appreciated.

Thanks.