We\'re creating a \'blank\'/minimal copy of an existing database and want to reset one of the sequences to a value. Putting the number in the below works, but I want to make it
You can use a negative increment to reset a sequence to a lower value - this script (it's just a PL/SQL block version of yours) will work with sequence values larger than 9999 without problems):
declare
currval pls_integer;
diff pls_integer;
begin
select SQ_USER_ID.nextval into currval from dual;
dbms_output.put_line('value before alter: ' || currval);
diff := 99999 - currval;
dbms_output.put_line('diff: ' || diff);
execute immediate ' alter sequence SQ_USER_ID INCREMENT BY ' || diff || 'nocache';
select SQ_USER_ID.nextval into currval from dual;
dbms_output.put_line('value after alter: ' || currval);
execute immediate 'alter sequence SQ_USER_ID INCREMENT BY 1 cache 20';
end;