Oracle 8.1.5 Memory bug!?!

Question

Hi !
I have a serious problem concerning the use of Oracle as db for upcoming projects.
Current situation:
- Platform: Windows NT 4.0 server
- DB: Oracle 8.1.5
- JDBC: 1.1 which comes with the Oracle 8.1.5
Problem:
- I have developed an ServletBased web-app. which has the capability to upload images (blob) and text into the db and then to stream out the images and write the text from there into a Servlet generated webpage.
After running the app. for about 10 minutes the virtual memory usage suddenly starts rising about 2-10 megs./second.
I have optimized my code and closed every resultset, statement, connection, input&outputstream, etc.
I would say that the application is fairly optimized by now but this crash still happens.
Could someone please confirm that this is actually a known problem with the Oracle db?
I have seen many messages concerning the same problem but so far have seen no good explanations.
If there is no hope for a solution I have to change the db for something else, which is no way a desirable action.
B.R. Kalle

Answer 1

Please refer [url http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96540/conditions10a.htm
]'Patterns Without % Example' on Oracle9i SQL Reference.
Here is [url http://download-west.oracle.com/docs/cd/F49540_01/DOC/server.815/a67779/operator.htm#997970]Oracle8i SQL Reference.
If a pattern does not contain the "%" character, the condition can be TRUE only if both operands have the same length.
So... there are bugs on 8.1.x, 9.2.0.4...
SQL> select * from v$version where rownum <= 1;
BANNER
Personal Oracle7 Release 7.3.2.3.1 - Production Release
SQL> create table tab1 (col1 char(6));
Table created.
SQL> insert into tab1 values ('xyz');
1 row created.
SQL> select * from tab1 where col1 like 'xyz';
no rows selected
SQL> select * from v$version where rownum <= 1;
BANNER
Oracle8i Enterprise Edition Release 8.1.7.4.1 - Production
SQL> create table tab1 (col1 char(6));
Table created.
SQL> insert into tab1 values ('xyz');
1 row created.
SQL> select * from tab1 where col1 like 'xyz';
COL1
xyz
SQL> select * from v$version where rownum <= 1;
BANNER
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
SQL> create table tab1 (col1 char(6));
Table created.
SQL> insert into tab1 values ('xyz');
1 row created.
SQL> select * from tab1 where col1 like 'xyz';
COL1
xyz
SQL> select * from v$version where rownum <= 1;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
SQL> create table tab1 (col1 char(6));
Table created.
SQL> insert into tab1 values ('xyz');
1 row created.
SQL> select * from tab1 where col1 like 'xyz';
no rows selected