Poor Video performance when using ver 9.0.2 of Jdeveloper

Question

I am using the 9.0.2 version of JDeveloper under Linux Suse 8.0. Does anyone know why when I use this product ubder this operating system the screens either do not refresh quickley or completely? I am using a 16MB video card.

Answer 1

I tried this test:
drop table foo;
create table foo (numeric number, text varchar2(2000));
begin
  for i in 1 .. 100000 loop
    insert into foo values (i, 'the cat sat on the mat');
  end loop;
end;
create index fooindex on foo(text) indextype is ctxsys.context
filter by numeric
EXEC dbms_workload_repository.create_snapshot;
begin
  for i in 1 .. 100000 loop
    delete from foo where numeric = i;
  end loop;
end;
commit;
EXEC dbms_workload_repository.create_snapshot;
@?/rdbms/admin/awrrpt.sqlIn the AWR report, I can see 100,000 inserts into CTXSYS.DRV$DELETE2 and 100,000 deletes from CTXSYS.DRV$SDATA_UPDATE2. On my desktop PC these take 4.06 seconds and 2.85 seconds of CPU time respectively, compared to 5.43 seconds for the delete from the $K table. Elapsed times are almost identical to CPU times.
That doesn't seem unreasonable to me - 70 microseconds per row updated. I added "alter system flush shared pool" before starting the delete but it made very little difference. If your figures are much worse than this then perhaps we should look further into it.