Large Oracle database breaks Oracle Connector?

Our Problem: Oracle connector is unable to retrieve the schema for column selection (uninstrumented/instrumented columns) in the connector setup due to timeout on a database with a large amount of schema.
Has anyone else had a similar experience? We tested using a smaller database and the connector was able to pull back the schema just fine.. but with a large database, even after telling Metadirectory to wait for the schema retrieval, it eventually returns with a message saying no schema could be retrieved. Tried changing the timeout settings in the connector, but this did not help. Is there another possible solution?
Any feedback is appreciated on this!
-Wayne

I had this problem as well, the problem is this, if you trace the query in the database that the connector is issuing you will see it is trying to bring back the entire information about objects for the entire database not just for objects your connector user has rights to. So on databases with thousands and thousands of objects like an oracle database running oracle finanacials or manufacturing their query will run for forever and a day. To get around this I spoofed the connector view creation process by creating the following tables in the schema of the user for the connector: ALL_CONS_COLUMNS, ALL_TABLES, ALL_TAB_COLUMNS and ALL_TAB_PRIVS into these I put only the info I needed to get the connector to create, however, I found that I need to keep them there even after the creation. If you have a dba handy he can help get this done.
PS: the query that the connector view runs actually uses more than these 4 system views, but by creating these 4 in the schema of the connector user the query finishes in a reasonable time so I didn't bother to include any others. Hopefuly I've been clear enough.....

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Pl do not post duplicates - Oracle Database Client --> Oracle Database in SSL mode.

Oracle Database on Oracle VM I/O performance.

Hi Experts,
I am planing to run Oracle Database on Oracle VM 3.2.x, but I am confusing about one thing that I hope find answer.
For a database on physical machine it is clear that Oracle Recommend to configure the storage contains the database as RAID 1+0 to have best I/O performance.
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How to integrate android application with oracle database using oracle mobile database server.

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Unable to connect to Oracle Database using Oracle Sql developer 2.1.1.64

Hi Everyone,
I am searching for some help regarding my problem with Oracle connectivity. I have installed Oracle 11g release 2 on my Windows XP Professional Laptop. For a few days after installation i could connect to the Oracle database with the SYSTEM account using Oracle SQL developer ( installed on the same Laptop) but now i am unable to do so.It gives me this annoying message:
An error was encountered performing the required operation Got a minus one from read call .Vendor code 0
However i am able to connect using Sql Plus by supplying the username SYSTEM and the corresponding password.
My TNSNAMES .ora file is as follows:
ORACLE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST =localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ORACLE)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
My Listener.ora file is as follows:
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = D:\app\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:D:\app\product\11.2.0\dbhome_1\bin\oraclr11.dll")
(SID_DESC =
(GLOBAL_DBNAME = Oracle)
(ORACLE_HOME = D:\app\product\11.2.0\dbhome_1)
(SID_NAME = Oracle)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(PROTOCOL_STACK =
(PRESENTATION = GIOP)
(SESSION = RAW)
ADR_BASE_LISTENER = D:\app
My Sqlnet.ora file is as follows:
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
I am new to Oracle and so i need someone in this forum who can help me resolve this problem. Also i even tried connecting to the database using Toad 10.5.0.41. It give me the following error:
ORA 12537 : TNS Connection closed
Thanks for your patience and help in advance.
---Prashant

Hello Irian and Sue,
I can connect to the Oracle database using SQL Plus. Now when i TNSPING ORACLE from command line i get the following message :
Used parameter files:
D:\app\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST =localhost
*)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = ORACLE)))*
TNS-12537: TNS:connection closed
Thanks for your response to my initial post.Do u have any other methods to resolve this?

View pdf file stored in oracle database through oracle forms

Forms [32 Bit] Version 10.1.2.0.2 (Production)
Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64bit Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.8.0 - Production
Oracle Toolkit Version 10.1.2.0.2 (Production)
PL/SQL Version 10.1.0.4.2 (Production)
Oracle Procedure Builder V10.1.2.0.2 - Production
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Oracle Query Builder 10.1.2.0.2 - Production
Oracle Virtual Graphics System Version 10.1.2.0.2 (Production)
Oracle Tools GUI Utilities Version 10.1.2.0.2 (Production)
Oracle Multimedia Version 10.1.2.0.2 (Production)
Oracle Tools Integration Version 10.1.2.0.2 (Production)
Oracle Tools Common Area Version 10.1.2.0.2
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I have created external directory and am able to load pdf files in oracle database table called test_blob.
CREATE TABLE test_blob (
id NUMBER(15)
, file_name VARCHAR2(1000)
, image BLOB
, timestamp DATE
I have 2 pdf files in the table. I want to view this pdf from forms when the user clicks on the button. On when-button-pressed trigger I want to show pdf on the screen. Any help is appreciated. Not on the designer. I want to run form application.
SELECT id, file_name,
DBMS_LOB.GETLENGTH(image) Length,
timestamp
FROM test_blob
ID|FILE_NAME|LENGTH|TIMESTAMP
1001|2011 HeartlandEmployeeReferralCard.pdf|353718|1/28/2013 11:44:41 AM
1002|2011 HeartlandEmployeeReferralCard.pdf|353718|1/28/2013 11:51:07 AM
Edited by: user_anumoses on Jan 28, 2013 11:45 AM

We were able to do the same thing with Oracle Application Server and Oracle WebLogic Server. I cannot remember how different the processes were, but it seems like they were very similar. I am going to give you the instructions on how we implemented a "Read PDF" procedure on the WebLogic Server. If you are still on the Application Server you may have to do some Google searches, but it all boils down to the mod_plsql DAD Configuration file.
Our PDF was located in a table with the following structure:
CASE_DOCUMENTS
 (id_document NUMBER NOT NULL,
 doc_blob BLOB,
 note VARCHAR2(240),
 created_by VARCHAR2(20) NOT NULL,
 created_dt DATE NOT NULL,
 case_id NUMBER NOT NULL,
 filename VARCHAR2(100) NOT NULL)Based on that table structure we created a procedure named READ_PDF which you will reference below in the dads.conf file below:
CREATE or REPLACE procedure read_pdf (p_id_document IN number)
is
view_file blob;
BEGIN
select doc_blob
 into view_file
 from case_documents
 where id_document = p_id_document;
OWA_UTIL.MIME_HEADER ('APPLICATION/PDF', FALSE);
HTP.P ('CONTENT-LENGTH: ' || DBMS_LOB.GETLENGTH (view_file));
OWA_UTIL.http_header_close;
WPG_DOCLOAD.download_file (view_file);
END;
GRANT EXECUTE ON read_pdf TO financial_user_role -- Name of role to execute
/Basically, you are passing in one parameter and that is the primary key for your table. You are selecting the pdf stored in a BLOB for that primary key. The commands below that allow the pdf to open up so you can view it – we got this off some search we did a few years ago.
Now, you need to add logic to your Oracle Form that will call the procedure above, but the URL is based on the dads.conf file that we will set up below… Anyway, we created a button on the form module with a label of "View". In the WHEN-BUTTON-PRESSED trigger the logic looks like this:
-- The View logic uses the DAD (Database Access Descriptors) method to view a .pdf file from the form.
-- The DAD was created on WebLogic Server with the name findadgen. This allows an http request be made
-- to the database.
declare
v_file varchar2(400);
v_success boolean;
ret_val number;
v_http_link varchar2(400);
begin
-- The format of the link is as follows: hostname:port/pls/DAD_name/procedure_name
v_http_link := 'http://finas03:8888/pls/findadgen/read_pdf?p_id_document=' || :case_documents.id_document;
web.show_document(v_http_link, '_BLANK');
end;The name of our WebLogic Server is "finas03" so that is what is listed in the URL. The "findadgen" is the name of the <Location> in the dads.conf file below, the "read_pdf" is the name of the procedure we created above, the "p_id_document=" is the IN parameter listed in the READ_PDF procedure created above, and the ":case_documents.id_document" is the reference to the primary key in our Oracle Form.
For WebLogic, you can either go through Enterprise Manager (directions below) or update the dads.conf file on the filesystem directly (if you update the dads.conf file directly then skip to step 4 and ignore step 5):
1. Enterprise Manager -> Web Tier -> ohs1
2. Oracle HTTP Server (pull-down) – Administration – Advance Configuration
3. Select File – dads.conf
4. Add something similar:
# ============================================================================
# mod_plsql DAD Configuration File
# ============================================================================
# 1. Please refer to dads.README for a description of this file
# ============================================================================
# Note: This file should typically be included in your plsql.conf file with
# the "include" directive.
# Hint: You can look at some sample DADs in the dads.README file
# ============================================================================
<Location /pls/findadgen>
 SetHandler pls_handler
 Order allow,deny
 Allow from All
 AllowOverride None
 PlsqlDatabaseUsername financial
 PlsqlDatabasePassword sdo_3#d1
 PlsqlDatabaseConnectString ffindbTNSFormat
 PlsqlNLSLanguage AMERICAN_AMERICA.WE8ISO8859P1
 PlsqlAuthenticationMode Basic
 PlsqlDefaultPage read_pdf
</Location>You are adding the <Location> section to your dads.conf file. The "finddadgen" is the name that you will reference in a change you fill make to your Oracle Form. The "financial" is the Schema, the "sdo_3#d1" is the password for that Schema, the "ffindb" is the database that the stored procedure is located on, and the "read_pdf" is a stored procedure you will have to create in order to read the pdf.
5. Press the "Apply" Button
6. Obfuscate the DAD password by running the dadTool.pl script located in $ORACLE_HOME/bin (This was done on Unix on our server with the following commands):
$> LD_LIBRARY_PATH=$ORACLE_HOME/lib;export LD_LIBRARY_PATH
$> cd $ORACLE_HOME/bin
$> perl dadTool.pl -f /u01/app/oracle/middleware/asinst_1/config/OHS/ohs1/mod_plsql/dads.conf
7. Restart the Oracle HTTP Server using Fusion Middleware Control:
Enterprise Manager -> Web Tier -> ohs1
Oracle HTTP Server – Control – Shutdown
Oracle HTTP Server – Control – Start Up
If you followed the instructions above, you should have created a stored procedure, added logic to your Oracle form to reference that stored procedure, and created an entry in the dads.conf file. Once you move the form onto the server and you restart the HTTP Service, you should be able to view a pdf that is stored in a table directly from your Oracle Form.

Multiple oracle databases in Oracle 11gR2 RAC

Hello Oracle RAC Gurus,
I need your advice in my setup on Unix platform.
I am planning to build high availability databases with Oracle RAC 11gR2. These databases may have different versions 11.1.0.6 and 11.1.0.7 and 11.2.0.1 ..
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CRS running on 11.2.0.1
ASM running on 11.2.0.1
DB1 running on 11.2.0.1 from ORACLE_HOME1
DB2 running on 11.1.0.7 from ORACLE_HOME2
My questions are:
1) Is this the best practice to have oracle databases in one RAC setup ?
2) Do I need a different oracle inventory for each version with different oracle inventory path ?
3) Would this setup will have patching difficulties and disadvantages ?
4) If I want to do the Data guard setup for this implementation, shall I perform the usual RAC/RAC setup or are there any consideration I have to put in mind?
Kindly advice,
Regards,
C

1) Is this the best practice to have oracle databases in one RAC setup ?
We have 11.2 infrastructure with 11.2 and 10.2.0.4 databases running from 2 db homes.
2) Do I need a different oracle inventory for each version with different oracle inventory path ?
Only one inventory
3) Would this setup will have patching difficulties and disadvantages ?
Less databases makes it less complicated. Many argue that a cluster should only have one db. We've patched our multi version environment without any issues.
4) If I want to do the Data guard setup for this implementation, shall I perform the usual RAC/RAC setup or are there any consideration I have to put in mind?
A RAC to RAC dataguard setup should work fine. Your standby should be indentical to your primary.
-Rich

Upload data from Access Database to Oracle Database In oracle 8i

hi everybody
i am trying upload data from Access database to Oracle Database
i have TT(F1,F2,F3) table in Access Databsse
and emp(ename,ecode,sal) in oracle Database
db_ac is my datasource name
when i connect to Access Database thru this command this show following error
SQL> connect a/a@odbc:db_ac;
ORA-00022: invalid session id; access denied
ORA-00022: invalid session id; access denied
ORA-00022: invalid session id; access denied
Error accessing PRODUCT_USER_PROFILE
Warning: Product user profile information not loaded!
You may need to run PUPBLD.SQL as SYSTEM
Server not available or version too low for this feature
ORA-00022: invalid session id; access denied
Connected.
when i am trying copy data as this command it show error and data not copied.
SQL> COPY FROM A/A@ODBC:DB_AC TO test/test@ora INSERT EMP USING SELECT F1,F2,F3 FROM TT;
Array fetch/bind size is 15. (arraysize is 15)
Will commit when done. (copycommit is 0)
Maximum long size is 80. (long is 80)
ORA-00022: invalid session id; access denied
ERROR:
OCA-00022: general OCA error
can help me .
with thanx

Hi there, 
 
Please kindly use instead the Database Forum at:- 
General Database Discussions 
 
... to place your question as this is for the Oracle Portal product Export / Import functionality. 
 
 
Kind regards, 
Pedro.

Java App connection to an Oracle Database through Oracle Stored Procedure

My team's access to its Databases (Oracle only) is restricted to access through Oracle Stored Procedures that are part of the Oracle Database. So, in my Java App I need to call the Stored Procedure that will give me the access to the table that I need, declare the right parameters and execute the command. The Stored Procedure will then hand me the data I need.
I am finding support on the web for creating Stored Procedures in Java, but that is not what I need.
Can anyone post here a class that addresses this, or point me to a link that will shed some light on it?
Thanks
user606303

user606303 wrote:
Sorry this code is unformatted - I can't see how to format it.Use \ tags
I am looking for Java code that will do what this .NET code below does (connects to a database and writes data to the table through an Oracle stored procedure that is part of the Oracle Database.)
So learn Java, learn JDBC and translate the requirements; don't attempt to translate the code as the platforms are too different.
From a quick glance it looks like a JDBC CallableStatement can do the job.

Connect to oracle database with Oracle.DataAccess.Lite_wce.dll

With Oracle.DataAccess.Lite_wce.dll i want to ceonnect to oracle database.
I try like:
OracleConnection conn = new OracleConnection("Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=xxx)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=baza1)));User Id=xx;Password=xx;");
conn.Open();
but it said "S1000[POL-3023] the database does not exist".
What i am doing wrong?

what client are you using if you are using windows mobile then
use
Oracle.DataAccess.Lite.dll on the handheld
connection string is "dsn=databasename;uid=SYSTEM;pwd=userpassword"
the username is always system, the passw0rd the the user password of the specific user that the handheld is created for, the database name depends you can see it in the device->orace->odbc.txt file
if your re on c# then you should write
using Oracle.DataAccess.Lite;
LiteConnection OraCon;
OraCon = new LiteConnection(connectionstring);
OraCon.Open();

Problem in connecting Non Oracle Database from Oracle

Hi:
I want to access "MS ACCESS" from Oracle 10g (10.2.0.1) using Windows XP.
I tried my best, applied all proper instructions I found from books and from Internet, but getting an error.
Here is what I did:
My Oracle database is called "ORCL" and "MS ACCESS" is called "access_1".
There is only one table "Employees" in "access_1".
1. Accessed ODBC from Start | Control Panel | Administrative Tools.
2. Clicked on Users DSN | "access_1" | Add.
3. Clicked on "Drive do Microsoft Access (*.MDB)" .
4. Hit Finish.
5. Entered at DATA SOURCE NAME "ODBC1" and at DESCRIPTION "Connect Oracle to MS Access". Also I clicked on SELECT and chose the "Access_1.mdb" which is located at "C:\Documents and Settings\Muhammad\My Documents" folder. Clicked OK. and clicked on OK again.
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# listener.ora Network Configuration File: C:\oracle\product\orcl\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product\orcl)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = hsodbc)
(ORACLE_HOME = C:\oracle\product\orcl)
(PROGRAM = hsodbc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = RIYAZDESKTOP)(PORT = 1521))
7. Configuring the hs file located at C:\oracle\Product\Orcl\hs|admin as follows:
# HS init parameters
# HS_FDS_CONNECT_INFO = <odbc data_source_name>
# HS_FDS_TRACE_LEVEL = <trace_level>
HS_FDS_CONNECT_INFO = odbc1
HS_FDS_TRACE_LEVEL = OFF
# Environment variables required for the non-Oracle system
#set <envvar>=<value>
8. The TNSNAMES.ORA File is located at C:\:\oracle\product\orcl\network\admin\ and has the following text (only the related text is shown here):
# tnsnames.ora Network Configuration File: C:\oracle\product\orcl\network\admin\tnsnames.ora
# Generated by Oracle configuration tools
access_db.world =
(DESCRIPTION =
(Address = (PROTOCOL = TCP) (HOST = RIYAZDESKTOP) (PORT = 1521))
(CONNECT_DATA = (SID = hsodbc))
(HS=OK)
9. The database link is created as follows:
SQL> create database link access_db USING 'access_db.world';
Database link created.
SQL>
10. Now the test and selection:
SQL> select * from employees@access_db;
select * from employees@access_db
ERROR at line 1:
ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from ACCESS_DB
OH! I HAVE TO RELOAD THE LISTENER AND I DID IT HERE.
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\oracle\product\orcl\BIN>lsnrctl reload
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 17-NOV-2006 17:51:26
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
The command completed successfully
C:\oracle\product\orcl\BIN>
SQL> select table_name from all_tables@access_db;
select table_name from all_tables@access_db
ERROR at line 1:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[Generic Connectivity Using ODBC][Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (SQL State: IM002; SQL Code: 0)
ORA-02063: preceding 2 lines from ACCESS_DB
I HAVE DONE IT EXACTLY WHAT YOU PROVIDED ME BUT GOT THE SAME RESULT.
ANY SOLUTION!
THANKS.

see Connect 9i to Microsoft Access Database

Accessing non-oracle databases from oracle

Is there any way to access from oracle to non-oracle databases and copy the data using COPY command?

Hi Nitin!
You can access these legacy applications as so-called external applications. Check out the Application Server Single Sign On guide.
cu
Andreas

Upgrade Oracle Database in Oracle Fail Safe configuration.

Dear All,
I usually upgrade Oracle Database (10g, 10g r2, 11g, 11g r2) in stand alone configuration without problems.
Now, I will must upgrade one database from 11g to 11g r2 in Fail Safe configuration.
Please, is there some link to read before this operation ?
Many thx.

Pl see if MOS Doc 223709.1 (How to upgrade or apply a patch to the RDBMS in an Oracle Fail Safe environment) can help
HTH
Srini

Not connecting to Oracle Database from Oracle BIEE 10g on Windows 7 machine

Hi friends,
I succesfully installed OBIEE 10g on my Windows 7 (Ultimate) machine using the assistance from one of your threads.
Now I am not able to connect to Oracle 11g database. When I tried to configure through START->Control Panel --> Administrative Tools --> DATA SOURCES (ODBC) ---> ....I am seeing Oracle 11g in System DSN but I am unable to see OBIEE driver in system DSN. After setting manually, I am now seeing OBIEE driver in user DSN. So is all other 32 bitapplications like MS Acess, Excel, etc., are all in user dsn.
When I open OBIEE Administration tool, I can only see ONLY Analytics Web and nothing else. How do I connect to Oracle database. Please assist me.
Thanks in advance.
Din

Hi,
Your window os 32bit or 64bit -- Please conform?
Your Os 64 bit -- http://www.mycabi.net/?p=19 please read this link.
Your windows os 32 bit :
Go--> Run--> odbcad32 follow the below step
In ODBC Administration, on the System DSN tab add a new connection
1. step : Data Source: "Oracle BI Server" -->"Next"-->Name: "AnalyticsWeb"-->Server: "local"-->(everything else unchecked)-->"Next"-->Give the username for the BI Server-->"Administrator" -->(I think the password can main blanc),Port: "9703 -->(everything else unchecked)-->"Next"-->(everything unchecked)-->"Finish"
When I tried to configure through START->Control Panel --> Administrative Tools --> DATA SOURCES (ODBC) ---> ....I am seeing Oracle 11g in System DSN but I am unable to see OBIEE driver in system DSN
A. I don't no why your creating ODBC connection.
Note: Open your rpd with AnalyticsWeb and give me useranme and password --> go to physical layer select connection pool and give all credntails here.
http://gerardnico.com/wiki/dat/obiee/ociv -- please refer this link
Datasource : Your dbname (ORCL,)
username: your schema name
Password: your schema password.
Hope it help's
Thanks,
Satya

Cant connect to Oracle database using oracle db client

Hi All,
I recently created a virtual machine running windows server 2008 on my windows 7 host. Oracle database 11g is already installed on host OS(windows 7) and I have installed oracle 11g client on the guest OS(windows server 2008) and trying to connect to oracle database from remote server using oracle client but getting this error:
ORA-12504: TNS:listener was not given the SERVICE_NAME in CONNECT_DATAI am trying to connect using oracle client as below:
C:\Users\Administrator>SET ORACLE_SID = HR84DEV
C:\Users\Administrator>SQLPLUS /NOLOG
SQL*Plus: Release 11.2.0.1.0 Production on Fri Feb 10 06:16:34 2012
Copyright (c) 1982, 2010, Oracle. All rights reserved.
SQL> CONNECT SYSADM/[email protected]
ERROR:
ORA-12504: TNS:listener was not given the SERVICE_NAME in CONNECT_DATA
I have created database with name - HR84DEV
HOST ip address is - 192.168.56.1
I googled this error and as most of resources/blogs talked about having correct entry on listner.ora and tnsnames.ora file, I did the changes on both of these files accordingly.
PFB the cotent of both of these files:
tnsnames.ora
# tnsnames.ora Network Configuration File: C:\MyApps\Oracle\product\11.2.0\dbhome_\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.
LISTENER_ORCL =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.1)(PORT = 1521))
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
HR84DEV =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = HR84DEV)
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
listner.ora
# listener.ora Network Configuration File: C:\MyApps\Oracle\product\11.2.0\dbhome_\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\MyApps\Oracle\product\11.2.0\dbhome_)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\MyApps\Oracle\product\11.2.0\dbhome_\bin\oraclr11.dll")
(SID_DESC =
(SID_NAME = HR84DEV)
(ORACLE_HOME = C:\MyApps\Oracle\product\11.2.0\dbhome_)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\MyApps\Oracle\product\11.2.0\dbhome_\bin\oraclr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.1)(PORT = 1521))
ADR_BASE_LISTENER = C:\MyApps\Oracle
Please not that I dont have any problem in connect to database locally.

Thanks Nicolas,
Actually, there was a problem with my oracle client installation. I uninstalled it and then installed back again but still, even after following your instructions I get some error.
Here what I did:
Created tnsnames.ora file as below:
HR84DEV =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = HR84DEV)
Placed it under appropriate directory and then checked the connection with database using the command shown below:
C:\Users\Administrator>tnsping HR84DEV
TNS Ping Utility for 32-bit Windows: Version 11.2.0.1.0 - Production on 10-FEB-2
012 08:42:03
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\MyApps\Administrator\product\11.2.0\client_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = 192.168.56.1)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = HR84DEV)))
OK (20 msec)
Then tried to connect to database as below:
C:\Users\Administrator>SET ORACLE_SID=HR84DEV
C:\Users\Administrator>SQLPLUS /NOLOG
SQL*Plus: Release 11.2.0.1.0 Production on Fri Feb 10 08:25:56 2012
Copyright (c) 1982, 2010, Oracle. All rights reserved.
SQL> CONNECT SYSADM/SYSADM@HR84DEV
ERROR:
ORA-28547: connection to server failed, probable Oracle Net admin error
But still getting error.
I Googled this error and tried to figure out what the problem is and came across the possible cause which is because I haven't specify that the service should run as a user who is in domain admin group.
well, I am not really sure about this and dont know what user name and password I should enter in OracleserviceHR84DEV-properties-log on-this account.
do I really need to set this?

Large Oracle database breaks Oracle Connector?

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