Unable to establish connection to oracle database using sql developer

hi guys,
i tried to connect to the oracle database using the sql developer, but it fails. it replies the following message:
Status: Failure -Test failed: Io exception: The Network Adapter could not establish the connection
what should i do? any help

Please provide a little more information:
1) SQLDeveloper version.
2) Database Version.
3) Database location (same machine or on the network).
4) Connection method (basic,TNS).
5) Connection type (Thin,Thick/OCI).
Usually the first thing to check is if you have correctly entered the right information for your database connection, then if everything seems to be OK the database itself should be checked for potential problems.

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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:
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My TNSNAMES .ora file is as follows:
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(DESCRIPTION =
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(CONNECT_DATA =
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ORACLR_CONNECTION_DATA =
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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 =
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(ORACLE_HOME = D:\app\product\11.2.0\dbhome_1)
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(DESCRIPTION_LIST =
(DESCRIPTION =
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(DESCRIPTION =
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(PROTOCOL_STACK =
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(SESSION = RAW)
ADR_BASE_LISTENER = D:\app
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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?

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Dear Sir/Madam,
how we start or shut down database using sql developer in windows
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HI, Welcome to OTN form,
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Hello can anyone help me i can't establish a coonection to Oracle Database eventhough i have set everything in my server.XML...
I manage to connect to ACCES database but not Oracle... help me... here is the resource portion in my server.xml

<Context path="/forum" docBase="forum" debug="0" reloadable="true">
<Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_forum_log." suffix=".txt" timestamp="true"/>
<Resource name="jdbc/forumDb" auth="Container" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/forumDb">
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<parameter><name>password</name><value></value></parameter>
<parameter><name>driverClassName</name><value>sun.jdbc.odbc.JdbcOdbcDriver</value></parameter>
<parameter><name>driverName</name><value>jdbc:odbc:forumDb</value></parameter>
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<Context path="/pmod" docBase="pmod" debug="0" reloadable="true">
<Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_pmod_log." suffix=".txt" timestamp="true"/>
<Environment name="maxExemptions" type="java.lang.Integer" value="15"/>
<Parameter name="context.param.name" value="context.param.value" override="false"/>
<Resource name="jdbc/pmodDb" auth="Container" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/pmodDb">
<parameter><name>user</name><value>pmod_owner</value></parameter>
<parameter><name>password</name><value>pmod_owner</value></parameter>
<parameter><name>driverClassName</name><value>oracle.jdbc.driver.OracleDriver</value></parameter>
<parameter><name>driverName</name><value>jdbc:oracle:thin:@192.9.200.2:1521:PMOD</value></parameter>
</ResourceParams>
</Context>
can anyone help... thanks...
sharil

hello....
here is how i do it if i use access, i just set in my server.xml as bellow....

<Context path="/pmod" docBase="pmod" debug="0" reloadable="true">
<Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_pmod_log." suffix=".txt" timestamp="true"/>
<Ejb name="ejb/User" type="Session" home="pmod.user.UserHome" remote="pmod.user.User"/>
<Environment name="maxExemptions" type="java.lang.Integer" value="15"/>
<Parameter name="context.param.name" value="context.param.value" override="false"/>
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               <ResourceParams name="jdbc/pmodDb">
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               <parameter><name>password</name><value></value></parameter>
<parameter><name>driverClassName</name><value>sun.jdbc.odbc.JdbcOdbcDriver</value></parameter>
          <parameter><name>driverName</name><value>jdbc:odbc:pmodDb</value></parameter>
</ResourceParams>
</Context>
later i would call from my servlet as follows
InitialContext initCtx = new InitialContext ();
DataSource ds = (DataSource)initCtx.lookup ("java:comp/env/jdbc/pmodDb");
conn = ds.getConnection();
then i can establish connection to my database... but now i change to oracle and my server.xml i configure as follows

<Context path="/pmod" docBase="pmod" debug="0" reloadable="true">
          <Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_pmod_log." suffix=".txt" timestamp="true"/>
<Environment name="maxExemptions" type="java.lang.Integer" value="15"/>
<Parameter name="context.param.name" value="context.param.value" override="false"/>
          <Resource name="jdbc/pmodDb" auth="Container" type="javax.sql.DataSource"/>
          <ResourceParams name="jdbc/pmodDb">
               <parameter><name>user</name><value>pmod_owner</value></parameter>
               <parameter><name>password</name><value>pmod_owner</value></parameter>
               <parameter><name>driverClassName</name><value>oracle.jdbc.driver.OracleDriver</value></parameter>
               <parameter><name>driverName</name><value>jdbc:oracle:thin:@192.9.200.2:1521:PMOD</value></parameter>
</ResourceParams>
</Context>
and i call from my servlet like before ...
InitialContext initCtx = new InitialContext ();
DataSource ds = (DataSource)initCtx.lookup ("java:comp/env/jdbc/pmodDb");
conn = ds.getConnection();
the datasource would return null in other word i cannot find the database
however if i tried to establish connection directly,
String u1 = "pmod_owner";
String p1 ="pmod_owner";
String path = "jdbc:oracle:thin:@192.9.200.2:1521:PMOD";
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
conn = DriverManager.getConnection( path, u1, p1 );
i can talk with the database....
so if anyone out there can help me to point me where did i go wrong?
fyi: i have put a lib which contains oracle jdbc driver called classes12.zip in my c:\tomcat\common\lib\
thank you

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:
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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?

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Ok. Here are the facts:
1) I can connect to the database using PL/SQL Developer.
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do the reports use native oracle connectivity or JDBC ?
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was it 32bit or 64bit client ?
what your LD_LIBRARY_PATH variable set to ?
what does it say in the CMC when you look at CR report's DB properties ?

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Hi,
In web Dynpro we will connect to SAP systems by using Adaptive RFC. Then How to connect the oracle 8i/9i using webdynpro? Plese tell me the procedure to establish the connecting using enterprise portal?
Thanks & Regards,
Mastanvali Shaik

Hi,
Check these:
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https://wiki.sdn.sap.com/wiki/display/VC/JDBCConnectionSetup
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Greetings,
Praveen Gudapati
[Points are welcome for helpful answers]

Unable to establish connection to oracle database using sql developer

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