Oracle 11g support for JDK 1.4

Dear All,
We are planning to migrate from Oracle 10.2.0.3 to Oracle 11.2.0.2. However our application server JDK version is in JDK1.4 and we use ojdbc4.jar for JDBC connectivity.
Please let me know, to migrate to Oracle 11g requires JDK1.5 and ojdbc1.5 or can we continue to stay at JDK1.4 and uses ojdbc4.jar to connect to Oracle11g.
Help Appreciated.

There is only one real answer here: test it and test it thoroughly. Asking this question here is pointless, you cannot trust anyone here to give you advice you can rely on. Whatever is said, you have to validate the claims anyway.
Or did you think that Oracle employees were going to answer your question? If so, you are sadly mistaken. Oracle charges money for giving technical support.

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There is only one real answer here: test it and test it thoroughly. Asking this question here is pointless, you cannot trust anyone here to give you advice you can rely on. Whatever is said, you have to validate the claims anyway.
Or did you think that Oracle employees were going to answer your question? If so, you are sadly mistaken. Oracle charges money for giving technical support.

Which one is best option RAC 10g or oracle 11g RAC for certifiction point ?

hi ,
which one is best option RAC 10g or oracle 11g RAC for certifiction point of view?
can any one detail difference between above 2 options?
Regards,
A.Anwar

A. Anwar wrote:
hi ,
which one is best option RAC 10g or oracle 11g RAC for certifiction point of view?
can any one detail difference between above 2 options?The main difference is: Oracle Lifetime Support
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http://www.oracle.com/us/support/library/lifetime-support-technology-069183.pdf
Oracle 10g R2 is getting unsupported.

Oracle 11g advantages for performance

Hello,
I am doing test of Client side result set cache on oracle 11 g rel2 ,O/S- RHEL
i am doing test as below on 2 Oracle 11g rel2 test servers on RHEL
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i run the same query few times
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thanks

>
I tested with custom code using java/jdbc thin driver ,connecting same as between 2 oracle 11g2 instance 1 as client other server,running code calling queries from client connecting to server
>
Unless you plan to provide the information ask for about what it is you are doing there really isn't any point in providing status updates that: you test this, you tested that. You made several statements about what you were doing
>
i have set init.ora paras for oracle 11g rel2 for client result cache,cache size/cache lag
i run the same query few times
in both the cases after each run i am noting statistics
select * from V$RESULT_CACHE_OBJECTS;
select * from V$CLIENT_RESULT_CACHE_STATS;
select * from gv$cpool_conn_info;
also autotrace,plan etc
>
and were asked to provide specific information that you haven't provided nor have you provided the query.
>
You say you are doing a bunch of things
But you don't post any of those results so we can see what it is you are looking at.
No one can comment on things they can't see.
>
You have to be using OCI for client side caching so if you use the Java thin driver but don't use OCI there won't be any cacheing. There also won't be any if it is not enabled or if the query has certain constraints as listed in the doc
http://docs.oracle.com/cd/B28359_01/appdev.111/b28395/oci10new.htm#CHDGGFEF
>
Queries that are not Cached
There are queries that are not cached on the OCI client even if the result cache hint is specified. Such queries may be cached on the database if the server result cache feature is enabled (see Oracle Database Concepts, "SQL Query Result Cache" for more information). If a SQL query includes any of the following, then the result set of that query is not cached in the OCI client result cache:
•Views
•Remote objects
•Complex types in the select list
•Snapshot-based or flashback queries
•Queries executed in a serializable, read-only transaction, or inside a flashback session
•Queries that have PL/SQL functions in them
•Queries that have VPD policies enabled on the tables
>
This Oracle-Developer.net article author doesn't seem to have any trouble caching results.
http://www.oracle-developer.net/display.php?id=503

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Is Oracle 11g released for NW04s and ECC6.0?
Please help. Thanks!

Plain and simple: No, it isn't.
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regards,
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Adipur wrote:
Hello, have you tried to create new administrator user, and install using that newly created user...?You found this to be a band-aid solution in your specific instance. (Strange case of installation on windows 7 - unable to complete installation But you have drawn the wrong conclusions and never found the real issue in the cited thread. Under the circumstances, I would not be offering this up as a generalized solution, as you are doing in this thread and in others:
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Hi
Please does anyone knows where can I find this ODBC ? Oracle 11g ODBC for Windows NT and Windows 95
I have test some ODBC from the Oracle page but doesnt work
Thank you
J.A.

I'm thinking no.
However I did find this which may help :
http://www.oracle.com/technetwork/database/windows/odbcfaq-128251.pdf
I did the search for 16 bit in it and found some interesting information.
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The last client I remember working on these OS's was Oracle 8. But I doubt that will connect to Oracle 11.
Best Regards
mseberg
Edited by: mseberg on Aug 14, 2012 6:06 PM
Later
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Paul Bergson
MVP - Directory Services
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Twitter @pbbergs http://blogs.dirteam.com/blogs/paulbergson
Please no e-mails, any questions should be posted in the NewsGroup.
This posting is provided AS IS with no warranties, and confers no rights.

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at ADF 10g support for Internet Explorer 8
... I was wondering about the future browser support in ADF 11g.
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edit 20091001 : fixed link to knownissues.html

Thanks for your reply Shay.
We plan to officially support IE8 with the next patch release to JDeveloper 11g - currently planned for later this year.That matches what I wrote in my initial post in this forum thread about IE8 support.
We usually only certify browsers after they officially go production.That does not really answer my question (q1) in this forum thread.
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regards
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The danger of memory target in Oracle 11g - request for discussion.

Hello, everyone.
This is not a question, but kind of request for discussion.
I believe that many of you heard something about automatic memory management in Oracle 11g.
The concept is that Oracle manages the target size of SGA and PGA. Yes, believe it or not, all we have to do is just to tell Oracle how much memory it can use.
But I have a big concern on this. The optimizer takes the PGA size into consideration when calculating the cost of sort-related operations.
So what would happen when Oracle dynamically changes the target size of PGA? Following is a simple demonstration of my concern.
UKJA@ukja116> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
PL/SQL Release 11.1.0.6.0 - Production
CORE    11.1.0.6.0      Production
TNS for 32-bit Windows: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production
-- Configuration
*.memory_target=350m
*.memory_max_target=350m
create table t1(c1 int, c2 char(100));
create table t2(c1 int, c2 char(100));
insert into t1 select level, level from dual connect by level <= 10000;
insert into t2 select level, level from dual connect by level <= 10000;
-- First 10053 trace
alter session set events '10053 trace name context forever, level 1';
select /*+ use_hash(t1 t2) */ count(*)
from t1, t2
where t1.c1 = t2.c1 and t1.c2 = t2.c2
alter session set events '10053 trace name context off';
-- Do aggressive hard parse to make Oracle dynamically change the size of memory segments.
declare
pat1     varchar2(1000);
pat2     varchar2(1000);
va       number;
vc       sys_refcursor;
vs        varchar2(1000);
begin
select ksppstvl into pat1
    from sys.xm$ksppi i, sys.xm$ksppcv v   -- views for x$ table
    where i.indx = v.indx
    and i.ksppinm = '__pga_aggregate_target';
for idx in 1 .. 10000000 loop
    execute immediate 'select count(*) from t1 where rownum = ' || (idx+1)
          into va;
    if mod(idx, 1000) = 0 then
      sys.dbms_system.ksdwrt(2, idx || 'th execution');
      select ksppstvl into pat2
      from sys.xm$ksppi i, sys.xm$ksppcv v   -- views for x$ table
      where i.indx = v.indx
      and i.ksppinm = '__pga_aggregate_target';
      if pat1 <> pat2 then
        sys.dbms_system.ksdwrt(2, 'yep, I got it!');
        exit;
      end if;
    end if;
end loop;
end;
-- As to alert log file,
25000th execution
26000th execution
27000th execution
28000th execution
29000th execution
30000th execution
yep, I got it! <-- the pga target changed with 30000th hard parse
-- Second 10053 trace for same query
alter session set events '10053 trace name context forever, level 1';
select /*+ use_hash(t1 t2) */ count(*)
from t1, t2
where t1.c1 = t2.c1 and t1.c2 = t2.c2
alter session set events '10053 trace name context off';With above test case, I found that
1. Oracle invalidates the query when internal pga aggregate size changes, which is quite natural.
2. With changed pga aggregate size, Oracle recalculates the cost. These are excerpts from the both of the 10053 trace files.
-- First 10053 trace file
PARAMETERS USED BY THE OPTIMIZER
PARAMETERS WITH ALTERED VALUES
Compilation Environment Dump
_smm_max_size                       = 11468 KB
_smm_px_max_size                    = 28672 KB
optimizer_use_sql_plan_baselines    = false
optimizer_use_invisible_indexes     = true
-- Second 10053 trace file
PARAMETERS USED BY THE OPTIMIZER
PARAMETERS WITH ALTERED VALUES
Compilation Environment Dump
_smm_max_size                       = 13107 KB
_smm_px_max_size                    = 32768 KB
optimizer_use_sql_plan_baselines    = false
optimizer_use_invisible_indexes     = true
Bug Fix Control Environment10053 trace file clearly says that Oracle recalculates the cost of the query with the change of internal pga aggregate target size. So, there is a great danger of unexpected plan change while Oracle dynamically controls the memory segments.
I believe that this is a desinged behavior, but the negative side effect is not negligible.
I just like to hear your opinions on this behavior.
Do you think that this is acceptable? Or is this another great feature that nobody wants to use like automatic tuning advisor?
================================
Dion Cho - Oracle Performance Storyteller
http://dioncho.wordpress.com (english)
http://ukja.tistory.com (korean)
================================

I made a slight modification with my test case to have mixed workloads of hard parse and logical reads.
*.memory_target=200m
*.memory_max_target=200m
create table t3(c1 int, c2 char(1000));
insert into t3 select level, level from dual connect by level <= 50000;
declare
pat1     varchar2(1000);
pat2     varchar2(1000);
va       number;
begin
select ksppstvl into pat1
    from sys.xm$ksppi i, sys.xm$ksppcv v
    where i.indx = v.indx
    and i.ksppinm = '__pga_aggregate_target';
for idx in 1 .. 1000000 loop
    -- try many patterns here!
    execute immediate 'select count(*) from t3 where 10 = mod('||idx||',10)+1' into va;
    if mod(idx, 100) = 0 then
      sys.dbms_system.ksdwrt(2, idx || 'th execution');
      for p in (select ksppinm, ksppstvl
          from sys.xm$ksppi i, sys.xm$ksppcv v
          where i.indx = v.indx
          and i.ksppinm in ('__shared_pool_size', '__db_cache_size', '__pga_aggregate_target')) loop
          sys.dbms_system.ksdwrt(2, p.ksppinm || ' = ' || p.ksppstvl);
      end loop;
      select ksppstvl into pat2
      from sys.xm$ksppi i, sys.xm$ksppcv v
      where i.indx = v.indx
      and i.ksppinm = '__pga_aggregate_target';
      if pat1 <> pat2 then
        sys.dbms_system.ksdwrt(2, 'yep, I got it! pat1=' || pat1 ||', pat2='||pat2);
        exit;
      end if;
    end if;
end loop;
end;
/This test case showed expected and reasonable result, like following:
100th execution
__shared_pool_size = 92274688
__db_cache_size = 16777216
__pga_aggregate_target = 83886080
200th execution
__shared_pool_size = 92274688
__db_cache_size = 16777216
__pga_aggregate_target = 83886080
300th execution
__shared_pool_size = 88080384
__db_cache_size = 20971520
__pga_aggregate_target = 83886080
400th execution
__shared_pool_size = 92274688
__db_cache_size = 16777216
__pga_aggregate_target = 83886080
500th execution
__shared_pool_size = 88080384
__db_cache_size = 20971520
__pga_aggregate_target = 83886080
1100th execution
__shared_pool_size = 92274688
__db_cache_size = 20971520
__pga_aggregate_target = 83886080
1200th execution
__shared_pool_size = 92274688
__db_cache_size = 37748736
__pga_aggregate_target = 58720256
yep, I got it! pat1=83886080, pat2=58720256Oracle continued being bounced between shared pool and buffer cache size, and about 1200th execution Oracle suddenly stole some memory from PGA target area to increase db cache size.
(I'm still in dark age on this automatic memory target management of 11g. More research in need!)
I think that this is very clear and natural behavior. I just want to point out that this would result in unwanted catastrophe under special cases, especially with some logic holes and bugs.
================================
Dion Cho - Oracle Performance Storyteller
http://dioncho.wordpress.com (english)
http://ukja.tistory.com (korean)
================================

Oracle 11g support for JDK 1.4

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