ADD a new connection to sql developer

Hi,
i downloaded the sql developer from the main site .i tried to adding a new connection.it showed the error no network adapter found .
first let me confirm one thing the database name and username,password are predefined ones are should i need to create those any before using these.
please let me know .i am struggling with this since a week.
Thanks in advance.
sreeram

Hi Sreeram,
The "no network adapter found" message seems more like a Windows setup/configuration issue. If you really meant some other error instead, perhaps like
The network adapter could not establish the connectionthen the following may shed some light:
Re: SQL developer download - unable to connect
So in fact you do need a database to access, either local or remote. The act of installing a database locally will create "predefined" usernames with passwords you can override.
Hope this helps,
Gary
SQL Developer Team

Similar Messages

Establish new connection in SQL developer

hi,
i am trying to establish new connection in sql developer, i m just new in orcale and installed 10g , from where i can get all the required information for new connection like HOSTNAME, port , sid etc
pls someone can help me on this

Depends. All this was presented to you when installing. If you didn't wrote anything down...
If you accepted all defaults, it still depends on your DB version (which?).
K.

Bug - unable to create new connections on SQL Developer 4.0.0.13

Upgraded to SQL Developer 4.0 and we are unable to create new connections in the Connections pane on the left hand side.
Clciking the green plus button and right clicking Connections and 'New Connection' doesn't bring up the New Database Connection dialog box.

Sounds like an 'install' problem.
Can you extract the zip to a new directory and try again? You did extract v4 to a fresh directory, yes?

New Connection in SQL Developer

Hi all,
Everything went well from the setting up of APEX, SQL DEV to the exporting of the Northwind DB. I am now trying to create a connection with the credentials in the application migration workshop pdf. I came across the following error : Listener does not currently know of SID given in connect descripter....
tried to use 10GR2 which was specified and XE, the one of my database...
can someone please help me in this regard, urgently.
Thanks in Advance
Melvin

Hi Melvin,
I'm not sure which connection you are trying to make. You mention that you are trying to make a connection using the credentials in the application migration workshop pdf - which credentials are you talking about? Please note that any username/password/host/SID information used in the documentation is for demonstration purposes. You should supply the information that corresponds with your environment. Is "10GR2" the SID for your Oracle Database instance? Please ensure that you use the connection details that correspond with your own database instance.
If you are attempting to create a connection in Oracle SQL Developer to the newly migration Oracle schema, then ensure that the username/password combination you supply corresponds with the user created at the top of the generated DDL statements by the Migration Workbench e.g. if your database is called Northwind, then you can expect the username/password combination to be northwind/northwind.
If you are attempting to create a connection to the Oracle database for your Migration Repository, please ensure that the user you are connecting as has the required privileges necessary for carrying out a migration. Please refer to the Migration documentation in Oracle SQL Developer for further information.
I hope this helps.
Regards,
Hilary

Problems Creating Custom Connections In SQL Developer

I have the Auto-Generated Local Connections available in SQL Developer 3.2.20.09 Build MAIN-09.87, but cannot create my own connections. I've searched the forums, but haven't had an "AHA" moment.
I installed the 32-Bit Oracle 11gR2 and SQL Developer with JRE on my Windows x64 system because installing the x64 version of Oracle 11gR2 failed. This is for database classes I'm taking at the local community college.
Trying to create a connection with OS Authentication:
Connection Name: PaulK
Connection type: Basic
Role: default
Hostname: localhost
Port: 1521
SID: orcl
and clicking Test returns Status: Failure - Test failed: The Network Adapter could not establish the connection
When I run lsnrctl services, I get
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\PaulK>lsnrctl services
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 26-APR-2013 13:36:35
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
listener.ora contains
# listener.ora Network Configuration File: E:\app\PaulK\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = E:\app\PaulK\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:E:\app\PaulK\product\11.2.0\dbhome_1\bin\oraclr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
ADR_BASE_LISTENER = E:\app\PaulK
tnsnames.ora contains
# tnsnames.ora Network Configuration File: E:\app\PaulK\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
I assume something is missing or incorrect, but I don't know what.
Thanks in advance for your help.

I reinstalled Oracle 11gR2 x86 and ran lsnrctl:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\PaulK>lsnrctl status
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 02-MAY-2013 15:51:56
Copyright (c) 1991, 2010, 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 11.2.0.1.0 - Production
Start Date 02-MAY-2013 14:57:07
Uptime 0 days 0 hr. 54 min. 53 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File E:\app\PaulK\product\11.2.0\dbhome_1\network\admin\listener.ora
Listener Log File e:\app\paulk\diag\tnslsnr\PaulK-PC\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
C:\Users\PaulK>lsnrctl services
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 02-MAY-2013 15:53:19
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Service "orcl" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:4 refused:0 state:ready
LOCAL SERVER
Service "orclXDB" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1022 state:ready
DISPATCHER <machine: PAULK-PC, pid: 8880>
(ADDRESS=(PROTOCOL=tcp)(HOST=PaulK-PC)(PORT=51451))
The command completed successfully
As you can see, my Service "orcl" matches your example, but I am still unable to create a new connection in SQL Developer.
This is my tnsnames.ora file:
# tnsnames.ora Network Configuration File: E:\app\PaulK\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
LISTENER_ORCL =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
and my listener.ora file:
# listener.ora Network Configuration File: E:\app\PaulK\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = E:\app\PaulK\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:E:\app\PaulK\product\11.2.0\dbhome_1\bin\oraclr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
ADR_BASE_LISTENER = E:\app\PaulK
These files are just as the install process created them, but are there any sore thumbs sticking out?
Thanks.

Question about creating a cloud connection to SQL Developer

Hi all!
I want to create a cloud connection on SQL Developer to Oracle cloud, but keep getting the following error (NOTE: I have the trial version. Also, I have replace the identity domain name with asterisks for the post) :
Connection to https://databasetrial1875-******.db.us1.oraclecloudapps.com refused
Additional Details:
oracle.dbtools.raptor.cloud.auth.AuthenticationFailedException: Connection to https://databasetrial1875-******.db.us1.oraclecloudapps.com refused
at oracle.dbtools.raptor.cloud.auth.basic.BasicAuthenticationEngine.doPost(BasicAuthenticationEngine.java:228)
at oracle.dbtools.raptor.cloud.auth.basic.BasicAuthenticationEngine.authenticate(BasicAuthenticationEngine.java:73)
at oracle.dbtools.raptor.cloud.connection.ConnectionCreator.createConnection(ConnectionCreator.java:24)
at oracle.dbtools.raptor.cloud.connection.CConnections$C.getConnection(CConnections.java:39)
at oracle.dbtools.raptor.cloud.connection.CConnections.getConnection(CConnections.java:176)
at oracle.dbtools.raptor.cloud.navigator.CloudConnection.openConnectionImpl(CloudConnection.java:127)
at oracle.dbtools.raptor.cloud.navigator.CloudConnection.getConnection(CloudConnection.java:89)
at oracle.dbtools.raptor.cloud.navigator.ConnectionTreeNode$LoadTask.doWork(ConnectionTreeNode.java:74)
at oracle.dbtools.raptor.cloud.navigator.ConnectionTreeNode$LoadTask.doWork(ConnectionTreeNode.java:38)
at oracle.dbtools.raptor.backgroundTask.RaptorTask.call(RaptorTask.java:193)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at oracle.dbtools.raptor.backgroundTask.RaptorTaskManager$RaptorFutureTask.run(RaptorTaskManager.java:554)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: org.apache.http.conn.HttpHostConnectException: Connection to https://databasetrial1875-******.db.us1.oraclecloudapps.com refused
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:158)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:121)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:561)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:415)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:941)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:919)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:910)
at oracle.dbtools.raptor.cloud.connection.DefaultClient.executeRequest(DefaultClient.java:90)
at oracle.dbtools.raptor.cloud.auth.basic.BasicAuthenticationEngine.doPost(BasicAuthenticationEngine.java:219)
... 16 more
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:618)
at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:375)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:148)
... 26 more
I have followed the steps to the last letter using: Data Loading and the Oracle Database Cloud Service
What I have done on the dashboard and APEX:
I changed the password of the SFTP user.
I have created a new user on APEX that belongs to the SQL Developer Group and changed the 'Require change on Password on First Use' to NO before creating the user
SQL Developer:
I set the database username to the new user I created in APEX
I set the database URL to the URL I used to reach the APEX page...https://databasetrial1875-******.db.us1.oraclecloudapps.com/apex/
I set the SFTP username to the username listed next to 'Service SFTP User Name' on the dashboard
I set the SFTP hostname to: sftp.us1.cloud.oracle.com
I left the port set to 22
When I login on SQL Developer to database, I use the password for the user I created in APEX
Thanks in advance to all who help!

Hi,
You have to use the admin account to add the admin role to the developer account. Can you please try this and let me know of your feedback.
The settings you added look good, and the you have the latest version of Sql DEVELOPER , ...so this should be an issue.
Maybe you have some firewall setting on your computer, that are blocking the connection?
If , after checking all of the above you still have an issue, please contact oracle support via the chat on the cloud.oracle.com and ask the engineer to open a Service Request under your name.
Thanks,
Flori

JDBC-Connection in SQL-Developer via Connection-Manager gives ORA-12529

Hi !
This is a followup of this Thread: https://community.oracle.com/thread/3568462
I have the same problem but I have ConnectionManager 11g (11.2.0.1.0) , which doesn't know the setting for AUTHENTICATION_LEVEL=0
And I have to use JDBC, so the OCI/Thick-driver is no option for me.
The same error is raised when I use JDBC with Eclipse,...
SQL-Plus over the Connection-Manager works without any problems.
The ruleset of my cman.ora is:
(rule_list=
    (rule=
       (src=*)(dst=*)(srv=*)(act=accept)
       (action_list=(aut=off)(moct=0)(mct=0)(mit=0)(conn_stats=on))
The error is:
Listener refused the connection with the following error:
ORA-12529, TNS:connect request rejected based on current filtering rules
Anyone got jdbc-connections over ConnectionManager 11g+ running?
Charly

Using Windows XP/Vista...
After testing in our environment, it appears that SQL Developer 1.5.1 (5440) does in fact ignore the TNS_ADMIN environment variable and ONLY looks in the Oracle Home directory (network/admin). We define a central network location for our tnsnames file and have the tns_admin setup to point there instead of locally for our users.
When selecting to add a new connection (in 1.5.1, it works in previously releases... meaning 1.2.something) and selecting TNS, the drop-down remains empty. However, if I exit SQL Developer and then copy the tnsnames file to the local network/admin directory I can then re-launch SQL Developer and the drop-down is populated. Exiting SQL Developer again, deleting the local copy of tnsnames, and then launching SQL Developer yet again results in the drop-down being empty.
All other Oracle-related applications function as expected (as they have for years) using the TNS_ADMIN environment variable.
Any suggestions/ideas?

How create new user in sql developer?

so i tried creating a new user in SQL developer, under the worksheet section, for a 12c database
create user Hares1
identified by book;
but I get this error
SQL Error: ORA-65096: invalid common user or role name
Sorry I know this is a generalized question. I only learned how to actually connect today - any help of a next step would be appreciated.

so i tried creating a new user in SQL developer, under the worksheet section, for a 12c database
create user Hares1
identified by book;
but I get this error
SQL Error: ORA-65096: invalid common user or role name
The 'next step' is RTFM. Sorry but for 12c multitenant you simply MUST read the documentation about the new multitenant architecture.
Your 'problem' is not creating a user with sql developer - it is how to create users in 12c.
See my extended comments and reply in this thread (and several other threads I reference there) which addresses your exact problem
12c: ORA-65049: creation of local user or role is not allowed in CDB$ROOT
http://www.oracle.com/pls/db121/homepage
I suggest you first read chapters 17 and 18 of the Concepts doc about the new multitenant architecture of 12c.
http://docs.oracle.com/cd/E16655_01/server.121/e17633/part_consol.htm#CHDGDBHJ
The 'Common Users in a CDB section answers your question
>
The name of every user-created common user must begin with the characters c## or C##. (Oracle-supplied common user names do not have this restriction.)
>
There are two types of users in 12c: common and local. You need to understand the difference between them.
Until you read those doc chapters you won't understand these terms: common user, local user, CDB, PDB, root container, and many others.
As I said in that other thread:
You will NOT be successful working with 12c unless you have read and understand the new multitenant architecture that it uses. There are very simple things (connecting, startup/shutdown, creation of users, grants to users, etc) that just don't work the same old way anymore.
If you try to just 'plow through it' without reading about it you will likely get an exception that you won't understand and it will likely use a term (CDB$ROOT) that you won't understand. Then you will hunt all over (or worse, ask in the forums) to find out about that term.
Yes - I know how adverse some people are to RTFM replies. But for 12c multitenant it is mandatory to read the docs no matter how expert you may be in previous Oracle versions.

Connect from SQL Developer to several SQL Server instances

Our SQL Server has more than one instance, but I see only one instance of them trying to connect from SQL Developer 1.2 to SQL Server. How I should define the connection information? Usually we connect to SQL Server by <hostname>/<instancename> and then the database name as CatalogName (Initial Catalog). In the Oracle world you can give only the hostname, a port number and the database name. How I can convince the SQL Developer to choose one of our SQL Server instances?

Hi user627927,
Bug/Enhancement request already logged.
We have not got this configuration in house, two people have suggested workarounds but we are unable to test them for now. The last person was unable to get these workarounds working, and we have not confirmed them in house.
Can you get the instances connected through two different ports?
It would be great if you could confirm either workaround.
-Turloch
*1/Suggestion 1 change the URL through SQLDevelopers xml connection store.
*2/Overload the port field to have instance in the eventual url
*1/Suggestion 1 change the url through SQLDevelopers xml connection store.
[Note it is probably simpler to connect a dummy connection through the connection dialog as usual save it (you cannot connect) and then add the instance information rather than having to enter all the information in an unmanaged way.]
Hi Naveen,
I had same problem as you and user579801. I managed to resolve it by doing the following.
1. Locate the file called IDEConnections.xml in the folder where you have installed SQL Developer (eg. c:\sql developer\sqldeveloper\system\oracle.jdeveloper.db.connection.11.1.1.0.11.42.62).
2. Create the following entries under <connections> tag.
<connection>
<URL>jdbc:jtds:sqlserver://\\.\;namedPipe=true;instance=SQLDBNam;</URL>
<ConnectionName>SQLServer</ConnectionName>
<user>SQLUser</user>
<ConnectionType>JDBC</ConnectionType>
<DeployPassword>false</DeployPassword>
<JdbcDriver>net.sourceforge.jtds.jdbc.Driver</JdbcDriver>
<RaptorConnectionType>Microsoft SQL Server</RaptorConnectionType>
</connection>
3. Save the file; Close and re-open the SQL Developer and try connecting.
Hope this will solve your problem. Good luck.
Regards
Raja
*2/Overload the port field to have instance in the eventual url
This took some figuring out but I cracked it in the end....
SQLServer tab:
Hostname: <servername>
Port: <portnumber>/<databasename>;instance=<instancename>
so for me the Port field looks like this: 1433/Gaffa;instance=SQL01
That should now connect to a named instance SQL Server.
Paul Fairhurst

Unable to create a connection in SQL developer

hii
I'm unable to create a connection in SQL developer..it says I/O Exception, Network Adapter could not establish a connection...i provided the username and password which i used for SQL*Plus, which is working fine. And i gave the host as localhost. I don't know how to fill the connection name field..can anyone help me in connecting to the database...By the way I'm using Oracle 11g. Thankssssss

you could try to change the connection type to TNS and pick the database name available to you in the Network Alias drop-down list.
Edited by: Alex Nuijten on Sep 5, 2008 10:13 AM

No tables listed when using a proxy connection in SQL Developer

Hello, I'm trying to use a connection in SQL developer that uses the proxy connection to connect to another users tables. In the SQL worksheet area I can access the other users tables with no problems. And using SELECT COUNT(*) FROM USER_TABLES i get the count of the number to tables. But on the tables view on the left hand side of SQL developer no tables are listed. So the question is why do I not see any tables under the tables view? Is this a bug or is it working by design? Thanks

To access other user's objects, use the Other Users node...
K.

Able to connect from SQL-Assistant BUT unable to connect from Sql Developer

Hello,
I have been troubling with this issue for the last two weeks...tried so much, but could not able to resolve....
sqlplus username/password@IPAddress:port/ServiceName
I am able to connect to DATABASE from SQLAssistant only when I provide string like ABOVE........If I dont mention the SERVICE, m unable to connect to DB...
Now the biggest issue is with SQL Developer.....m not at all able to connect to DB using SQL Developer....I tried all options...but no use...
waiting for your reply......
Thanks Much in Advance.....

What have you tried, and what error messages are you getting?
When you create a connection in SQL Developer, you should specify IPAddress,port,ServiceName as in your sqlplus connect string.

Unable to connect using SQL Developer.

Hi,
I am having a hard time connecting to the database instance using "Cloud Connections," in SQL Developer.
I am using the information found in here: http://docs.oracle.com/cloud/CSDBU/develop.htm#BABDBHJA to connect to my cloud-service, but all I get is an error:
"Authentication Failed Invalid resource owner credentials."
I am positive that I am using the same username and password as when logging in to could.oracle.com.
Can anybody help me?

Apologies for any difficulty you have been having.
I would start by reviewing the white paper on data movement. My guess is that you have not defined an APEX user with SQL Developer privileges (yes, I know the process could be more clear - it's getting there.)
You can find the white paper here - http://www.oracle.com/technetwork/database/database-cloud/public/data-movement-wp-1844121.pdf. Please make sure you follow all the steps properly, for both initialization and the actual connection.
Hope this helps.
- Rick Greenwald, Product Management, Database Cloud Service

Connection ... able to connect using sql developer, but not sqlplus or toad too

Hi folks, having this issue, with only one of my so many databases, what might be the reason and how to fix/correct this, please assist.
Able to connect using sql developer, but not sqlplus or toad too; sqlplus error: ORA-12154: TNS:could not resolve the connect identifier specified
thanks in advance.

SQLDEVELOPER works since it use JDBC Thin & does not use tnsnames.ora
ORA-12154 ALWAYS only occurs on SQL Client & no SQL*Net packets ever leave client system
ORA-12154 [B]NEVER[/B] involves the listener, the database itself or anything on the DB Server.
ORA-12154 occurs when client requests a connection to some DB server system using some connection string.
TNS-03505 is thrown by tnsping & is same error as ORA-12154 thrown by sqlplus or others.
The lookup operation fails because the name provided can [B]NOT[/B] be resolved to any remote DB.
The analogous operation would be when you wanted to call somebody, but could not find their name in any phonebook.
The most frequent cause for the ORA-12154 error is when the connection alias can not be found in tnsnames.ora.
The lookup operation of the alias can be impacted by the contents of the sqlnet.ora file; specifically DOMAIN entry.
TROUBLESHOOTING GUIDE: ORA-12154 & TNS-12154 TNS:could not resolve service name [ID 114085.1]
http://edstevensdba.wordpress.com/2011/02/26/ora-12154tns-03505/

How to connect to sql developer

i have oracle 11g enterprise edition on my laptop i installed sql developer on my laptop how to connect sql developer to databace(oracle 11g enterprise edition) in my
laptop

Hi,
Just launch SQL Developer and read the Getting Started section of the SQL Developer Concepts and Usage in Help|Table of Contents.
Otherwise try searching this forum for earlier posts on the topic. For example, my entry in this thread:
can't create connection in SQL developer
Regards,
Gary Graham
SQL Developer Team

ADD a new connection to sql developer

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