Submitted by: @pavel-zotov

connect 'localhost/3333:e30' user 'SYSDBA' password 'masterke';

create or alter user u1 password '1';
recreate exception exc_foo 'Houston we have a problem: next sequence value is @1';
recreate sequence gen_bar start with 9223372036854775807 increment by 2147483647;
commit;

grant usage on exception exc_foo to u1; ----------------------- [ 1 ]
grant usage on sequence gen_bar to u1;
commit;

Output not containing info about possible usage of exception 'exc_foo' which was set in [ 1 ]:

/* Grant permissions for this database */
GRANT USAGE ON SEQUENCE GEN_BAR TO USER U1

PS. User `u1`, of course, CAN use both exception & sequence:

connect 'localhost/3333:e30' user u1 password '1';

show exception exc_foo;
show sequence gen_bar;
set term ^;
execute block as
begin
exception exc_foo using (next value for gen_bar);
end
^ set term ;^
commit;

Output:

Exception Name Used by, Type
=============================== =============================================
EXC_FOO
Msg: Houston we have a problem: next sequence value is @1

Generator GEN_BAR, current value: 9223372036854775807, initial value: 9223372036854775807, increment: 2147483647
Statement failed, SQLSTATE = HY000
exception 6
-EXC_FOO
-Houston we have a problem: next sequence value is -9223372034707292162

Commits: 466a19a 3e9d5db FirebirdSQL/fbt-repository@c5f912e FirebirdSQL/fbt-repository@8974ecd