Oracle 11g - Listen for remote connections

Hi all,
I recently installed Oracle 11.1.0.7.0 on a Windows Server 2008 standard server 6.0 service pack 2. Everything is working as it should.
I can open the database control web page on the local computer.
I can connect locally to the database from SQL Plus
I can connect locally to the database from Oracle SQL Developer
The database control web page shows the database is up and running as well as the listener. All is good! As the status shows:
C:\>lsnrctl status
LSNRCTL for 32-bit Windows: Version 11.1.0.7.0 - Production on 11-APR-2012 07:24
:02
Copyright (c) 1991, 2008, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.1.0.7.0 - Produ
ction
Start Date 10-APR-2012 16:58:34
Uptime 0 days 14 hr. 25 min. 33 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File F:\app\oracle\product\11.1.0\db_2\network\admin\listen
er.ora
Listener Log File f:\app\oracle\diag\tnslsnr\SLOTH\listener\alert\log.xm
l
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=SLOTH.qmuzik.local)(PORT=1521)))
Services Summary...
Service "qmzorcl" has 1 instance(s).
Instance "qmzorcl", status READY, has 1 handler(s) for this service...
Service "qmzorclXDB" has 1 instance(s).
Instance "qmzorcl", status READY, has 1 handler(s) for this service...
Service "qmzorcl_XPT" has 1 instance(s).
Instance "qmzorcl", status READY, has 1 handler(s) for this service...
The command completed successfullyBut when I open Oracle SQL Developer from another PC and try to connect, I am unable to do so!
I keep getting the following error:
Status: Failure - Test failed: IO Error: The Network Adapter could not establish the connection.What do I need to do, so that I can connect from a remote computer?
Can anyone please assist me in this matter?
Many thanks in advance!
Kind regards,
Richard

Vishwanath wrote:
Open Listener .ora and tnsnames .ora on server and match the below parameters with the connection form of SQL developer.Check one by one they should match to establish the connection to the database.
HOSTNAME, PORTNUMBER and SERVICE_NAME.Hi,
Many thanks for the response! I am sure that the connection parameters are correct.
Client PC:
Hostname: SLOTH.qmuzik.local
Port: 1521
SID: qmzorcl (I even tried the QMZORCL - but that did not make a difference)
Server listener.ora File:
# listener.ora Network Configuration File: F:\app\oracle\product\11.1.0\db_2\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = SLOTH.qmuzik.local)(PORT = 1521))
Server tnsnames.ora File:
# tnsnames.ora Network Configuration File: F:\app\oracle\product\11.1.0\db_2\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
QMZORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = SLOTH.qmuzik.local)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = qmzorcl)
)Any suggestions?
Thanks again!

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Dear guys,
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Message was edited by:
G.B.Q.

Hi there!
Modify the following entry in sqlnet.ora
SQLNET.AUTHENTICATION_SERVICES= (NTS)
to
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and you will be fine,
Regards,
Jay Munshi
http://jaydba.tripod.com

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Oracle 11g - External Table/Remote File Issue?
=============================
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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.
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UKJA@ukja116> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
PL/SQL Release 11.1.0.6.0 - Production
CORE    11.1.0.6.0      Production
TNS for 32-bit Windows: Version 11.1.0.6.0 - Production
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*.memory_target=350m
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create table t2(c1 int, c2 char(100));
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insert into t2 select level, level from dual connect by level <= 10000;
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alter session set events '10053 trace name context forever, level 1';
select /*+ use_hash(t1 t2) */ count(*)
from t1, t2
where t1.c1 = t2.c1 and t1.c2 = t2.c2
alter session set events '10053 trace name context off';
-- Do aggressive hard parse to make Oracle dynamically change the size of memory segments.
declare
pat1     varchar2(1000);
pat2     varchar2(1000);
va       number;
vc       sys_refcursor;
vs        varchar2(1000);
begin
select ksppstvl into pat1
    from sys.xm$ksppi i, sys.xm$ksppcv v   -- views for x$ table
    where i.indx = v.indx
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      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';
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        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
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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
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    execute immediate 'select count(*) from t3 where 10 = mod('||idx||',10)+1' into va;
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      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
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      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)
================================

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944589 wrote:
Hi,
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And from Oracle SQL Developer, I have created a connection called - JafferCon and SID also given..and the role is - SYSDBA
And I excute the below statement
insert into MyTable1 Values ('AAA1', 'BBB1', 'CCC1')
insert into MyTable1 Values ('AAA2', 'BBB2', 'CCC2')
Then I checked by Select statement, it has shown the values....No Problem....
But, as a test, I deleted the connection and created a new connection tio the same DataBase with different name
and when I checked by Select Statement....., it has not shown the values....????
Does any mistakes....?
Thanks for the directions...

after you insert, update or delete any data in the database you must use "commit" or "rollback" statement. Commit if you want "save" the changes or rollback if you don't.
Other users can't see this new changes until you do the "commit".

Oracle 11g - Listen for remote connections

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