Network Adapter could not establish connection during installation

Hi,
I'm trying to install html db v10.2.0.1 and http server on the Fedora Core 4 platform and am getting a "Network Adapter could not establish connection during installation" error. This occurs after pressing Next at on the Specify HTML DB Database Details dialog box. Note that I'm not new to oracle databases or html db. I can't seem to find a similar thread on this forum related to the html db v2 install and I've read the FAQ related to the installation, making sure that I unset the TNS_ADMIN and ORACLE_HOME environment variables before launching the installer. I also checked that I can connect to the database via the listener, sqlplus sys@database as sysdba. I checked the listener status:
[oracle@hinault ~]$ lsnrctl status
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 18-AUG-2005 12:03:23
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 18-AUG-2005 08:11:25
Uptime 0 days 3 hr. 51 min. 58 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Log File /u01/app/oracle/product/10.2.0/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=hinault.com)(PORT=1521)))
Services Summary...
Service "tibbetts" has 1 instance(s).
Instance "tibbetts", status READY, has 1 handler(s) for this service...
Service "tibbettsXDB" has 1 instance(s).
Instance "tibbetts", status READY, has 1 handler(s) for this service...
Service "tibbetts_XPT" has 1 instance(s).
Instance "tibbetts", status READY, has 1 handler(s) for this service...
The command completed successfully
I also checked the installation log files. Here's the contents of the end of the file:
schemaName = sys
schemaPassword = Protected value, not to be logged
connectString = //hinault.com:1521/tibbetts
userName = FLOWS_010600
INFO: Query Returned: ERROR:Exception occured while connecting to database. Please check the connection details of the database you specified and retry.
Io exception: The Network Adapter could not establish the connection
SEVERE: The installer has encountered the following error while trying to connect to the target database:
ERROR:Exception occured while connecting to database. Please check the connection details of the database you specified and retry.
Io exception: The Network Adapter could not establish the connection
INFO: User Selected: Yes/OK
I also checked the listener log and it looks normal. I checked that I entered the correct values in the Specify HTML DB Database Details dialog box, hostname, port and service name.

[root@hinault sbin]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:12:3F:DF:23:BF
inet addr:10.100.41.136 Bcast:10.100.41.255 Mask:255.255.255.0
inet6 addr: fe80::212:3fff:fedf:23bf/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:72238 errors:0 dropped:0 overruns:0 frame:0
TX packets:44289 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:19151698 (18.2 MiB) TX bytes:4351417 (4.1 MiB)
Interrupt:9
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:6838 errors:0 dropped:0 overruns:0 frame:0
TX packets:6838 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3168107 (3.0 MiB) TX bytes:3168107 (3.0 MiB)
sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

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Message was edited by:
ajashadi

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user11937618 wrote:
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You should post your question in [SQL Developer|http://forums.oracle.com/forums/forum.jspa?forumID=260] forum
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null

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lsnrctl service
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 06-ABR-2011 01:53:14
Copyright (c) 1991, 2005, Oracle. All rights reserved.
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Copyright (c) 1991, 2005, Oracle. All rights reserved.
Conectándose a (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
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Tiempo Actividad 0 días 1 hr. 39 min. 51 seg.
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Failure -lo exception: The Network Adapter could not establish the connecti

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## Detail 0 ##
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## Detail 0 ##
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     at oracle.apps.fnd.framework.server.OAExceptionUtils.processAOLJErrorStack(OAExceptionUtils.java:980)
     at oracle.apps.fnd.framework.server.OAUtility.getWebAppsContext(OAUtility.java:352)
     at oracle.apps.fnd.framework.CreateIcxSession.getEncryptedSessId(CreateIcxSession.java:144)
     at oracle.apps.fnd.framework.CreateIcxSession.createSession(CreateIcxSession.java:80)
     at test_fwktutorial._jspService(test_fwktutorial.jsp:45)
     at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java:139)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:317)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:465)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:379)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:727)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:306)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:767)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:259)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:106)
     at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:803)
     at java.lang.Thread.run(Thread.java:534)
## Detail 0 ##
java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:334)
     at oracle.jdbc.ttc7.TTC7Protocol.handleIOException(TTC7Protocol.java:3675)
     at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:352)
     at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:365)
     at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:536)
     at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:328)
     at java.sql.DriverManager.getConnection(DriverManager.java:512)
     at java.sql.DriverManager.getConnection(DriverManager.java:140)
     at oracle.apps.fnd.security.ConnectionManager.dbConnect(ConnectionManager.java:1194)
     at oracle.apps.fnd.security.ConnectionManager.dbConnect(ConnectionManager.java:1121)
     at oracle.apps.fnd.security.AppsConnectionManager.makeGwyuidConn(AppsConnectionManager.java:664)
     at oracle.apps.fnd.security.AppsConnectionManager.getGwyuidConn(AppsConnectionManager.java:736)
     at oracle.apps.fnd.security.AppsConnectionManager.makeGuestConnection(AppsConnectionManager.java:575)
     at oracle.apps.fnd.security.DBConnObj.<init>(DBConnObj.java:240)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
     at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
     at oracle.apps.fnd.common.Pool.createObject(Pool.java:1187)
     at oracle.apps.fnd.common.Pool.borrowObject(Pool.java:946)
     at oracle.apps.fnd.security.DBConnObjPool.borrowObject(DBConnObjPool.java:703)
     at oracle.apps.fnd.security.AppsConnectionManager.borrowConnection(AppsConnectionManager.java:232)
     at oracle.apps.fnd.common.Context.borrowConnection(Context.java:1773)
     at oracle.apps.fnd.common.AppsContext.getPrivateConnectionFinal(AppsContext.java:2460)
     at oracle.apps.fnd.common.AppsContext.getPrivateConnection(AppsContext.java:2398)
     at oracle.apps.fnd.common.AppsContext.getJDBCConnection(AppsContext.java:2257)
     at oracle.apps.fnd.common.AppsContext.getJDBCConnection(AppsContext.java:2072)
     at oracle.apps.fnd.common.AppsContext.getJDBCConnection(AppsContext.java:1976)
     at oracle.apps.fnd.profiles.Profiles.getConnection(Profiles.java:2494)
     at oracle.apps.fnd.profiles.Profiles.getProfileOption(Profiles.java:1304)
     at oracle.apps.fnd.profiles.Profiles.getProfile(Profiles.java:384)
     at oracle.apps.fnd.profiles.ExtendedProfileStore.getSpecificProfileFromDB(ExtendedProfileStore.java:210)
     at oracle.apps.fnd.profiles.ExtendedProfileStore.getSpecificProfile(ExtendedProfileStore.java:169)
     at oracle.apps.fnd.profiles.ExtendedProfileStore.getProfile(ExtendedProfileStore.java:148)
     at oracle.apps.fnd.common.logging.DebugEventManager.configureUsingDatabaseValues(DebugEventManager.java:1147)
     at oracle.apps.fnd.common.logging.DebugEventManager.configureLogging(DebugEventManager.java:1008)
     at oracle.apps.fnd.common.logging.DebugEventManager.internalReinit(DebugEventManager.java:977)
     at oracle.apps.fnd.common.logging.DebugEventManager.reInitialize(DebugEventManager.java:944)
     at oracle.apps.fnd.common.logging.DebugEventManager.reInitialize(DebugEventManager.java:931)
     at oracle.apps.fnd.common.AppsLog.reInitialize(AppsLog.java:570)
     at oracle.apps.fnd.common.AppsContext.initLog(AppsContext.java:873)
     at oracle.apps.fnd.common.AppsContext.initializeContext(AppsContext.java:858)
     at oracle.apps.fnd.common.AppsContext.initializeContext(AppsContext.java:827)
     at oracle.apps.fnd.common.AppsContext.<init>(AppsContext.java:686)
     at oracle.apps.fnd.common.WebAppsContext.<init>(WebAppsContext.java:846)
     at oracle.apps.fnd.framework.server.OAUtility.getWebAppsContext(OAUtility.java:351)
     at oracle.apps.fnd.framework.CreateIcxSession.getEncryptedSessId(CreateIcxSession.java:144)
     at oracle.apps.fnd.framework.CreateIcxSession.createSession(CreateIcxSession.java:80)
     at test_fwktutorial._jspService(test_fwktutorial.jsp:45)
     at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java:139)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:317)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:465)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:379)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:727)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:306)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:767)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:259)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:106)
     at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:803)
     at java.lang.Thread.run(Thread.java:534)
I have checked all the setups. Its as per document.
I will appreciate any help on this.
Thanks & Regards
Samir

Hi,
according to the message, the database is not accessible. This can be because the database is down or the database connect information points e.g. to a wrong port
Frank

Network adapter could not establish a connect from external server

hi,
I've set up a jdbc thin driver properly using
the following input:
"jdbc:oracle:thin:@ipaddress:1521:DBname",
"username", "password"
When outside users try to connect externally (outside the network) there is a different ipaddress. Although they are able to ping,
telnet, run jsp etc... using the external address, they get the following error when they try the thin driver connection:
i/o exception: network adapter could not establish a connection
They change the ipaddress in the connection string to match the external ip. We are using oracle 8i, JRun on Linux. I have a feeling it has something to do with the tnsnames.ora file but I can't be sure.
Any ideas?
Thanks in advance!

this is expected behavior ...
the jdbc thin driver requires the use of an ip address that the calling program has acces to ...
internally you have one ip address exposed.
apparently you have another ip address set up for the external customer.
fyi
jdbc thin driver don'ts use the tnsnames.ora file -- they use "host:port:sid" because they are required to be platform independent and not access local datafiles or environment variables on the execution platform.
jdbc oci drivers do use tnsnames.ora which provides the host:port:sid info in their entries.

HOW TO RESOLVE(Test failed: The Network Adapter could not establish the connection)

Hii
I want to create new databse as sysdba in jdev.I followed the steps as given in
Oracle JDeveloper 11g Release 2 Tutorials - Designing and Building Database Tables
In step 7 create database user and database connection, I am not able to do that and getting the error
(Test failed: The Network Adapter could not establish the connection).
Please help me.

Hi,
Could you please provide all value you pass to the connection properties on the connection creation panel? First of all, you should choose "Generic JDBC" as the connection type in order to use BDB SQL JDBC driver.
Regards,
Cindy

Io exception: The Network Adapter could not establish the connection

Hi All,
I run tomcat and connect to Oracle fine, both on the same machine.
I also run some batch processes daily and they often run without problems. The batch processes lots of selects and updates/inserts onto Oracle.
These tend to work fine, but sometimes when they run I get
java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
So a batch process will be running doing lots of selects and updates then it just decides it had enough and throws this error each time it tries to connect. Meanwhile tomcat continues to run fine through the same TNS listener, but subsequent batch jobs fail to connect.I normally have to restart the TNS Listener.
I connect through the same class whether connecting through Tomcat or from the batch process with this:
public static Connection getConnection(String caller) throws SQLException{
try{
Connection con;
if (standalone){
try{Class.forName(driver);}catch(ClassNotFoundException e){}
con=DriverManager.getConnection(url,user,password);
return con;
}else{
if (ds==null)initialiseContext();
con=ds.getConnection();
return con;
}catch(SQLException e){
ds=null;
logger.debug("Problem in DBAccess.getConnection()...");
logger.debug(e.getMessage());
e.printStackTrace();
throw e;
I specifiy params such as MaxIdle with Tomcat using the xml config but not when its standalone - could this be affecting it?
Any idea?
Thanks.

lovingbarcelona wrote:
* Yep I get the same on the dev box.
* I am definitely closing all the connections, I keep a close watch on that.
Oracle should be able to handle lots of connections no problem, I agree, and it is through tomcat.
Yet the exception that you get says that it isn't. Oracle, for example, on a single box shouldn't be able to handle 100,000 simultaneous connections.
I would be very surprised if it couldn't handle 1,000. And if there was an issue at that point it would be a resource bound issue, like CPU (on the single box) rather than connections.
You suggested licensing issues?I believe at one time, not necessarily now, the Oracle server would be sold such that it limited the number of simultenous connections. This could have been a relatively low number. There are quite a few assumptions in that - the major one would be it is based on my faulty memory and second would be that it was years ago.
By the way you are not running this on a unix variant system without redoing the kernel limits to set up for a server system right?

Error: The Network Adapter could not establish the connection

hi, i am using classes111.zip (the oracle 8.0.5 thin driver) with
linux and gnu jsp pages. the backend is an oracle 8.04 NT
database.
i get this error: "The Network Adapter could not establish the
connection " my question is this - is this error the client
problem or the db server problem. here is the code:
String driverName = "oracle.jdbc.OracleDriver";
String url = "jdbc:oracle:thin:oracle1:1541:ORCL";
String user = "demo";
String pwd = "demo";
String SQL = "";
ResultSet rs;
try
DriverManager.registerDriver(new
oracle.jdbc.driver.OracleDriver());
Connection con = DriverManager.getConnection(url,
user, pwd );
DatabaseMetaData dma = con.getMetaData();
Statement stmt = con.createStatement();
rs = stmt.executeQuery("select * from test");
while(rs.next())
out.println(rs.getString("xx") +
rs.getString("yy"));
catch( SQLException e )
out.println("
error: -> " + e + " <-
exiting
any ideas?
thanks in advance,
steve
null

hi, i am using classes111.zip (the oracle 8.0.5 thin driver) with
linux and gnu jsp pages. the backend is an oracle 8.04 NT
database.
i get this error: "The Network Adapter could not establish the
connection " my question is this - is this error the client
problem or the db server problem. here is the code:
String driverName = "oracle.jdbc.OracleDriver";
String url = "jdbc:oracle:thin:oracle1:1541:ORCL";
String user = "demo";
String pwd = "demo";
String SQL = "";
ResultSet rs;
try
DriverManager.registerDriver(new
oracle.jdbc.driver.OracleDriver());
Connection con = DriverManager.getConnection(url,
user, pwd );
DatabaseMetaData dma = con.getMetaData();
Statement stmt = con.createStatement();
rs = stmt.executeQuery("select * from test");
while(rs.next())
out.println(rs.getString("xx") +
rs.getString("yy"));
catch( SQLException e )
out.println("
error: -> " + e + " <-
exiting
any ideas?
thanks in advance,
steve
null

Network adapter could not establish the connection

Hi,
Iam new to using Oracle please help me in this problem. Iam trying to connect oracle8i in my home pc(win 98) in java.. I have said..
String url="jdbc:oracle:thin:@testhost:1521:sid";
DriverManager.getConnection(url,"scott","tiger");
Actually i have added the service name using Oracle Net 8 Assistant ... it asked me service name so i gaved "fobjects". then host and port number then i gave "testhost" and port number as 1521. then i tried to use the test service but i couldnt get it... it gaved me error called " ORA12545- Connect failed because target host or obejct doe not exist ..Even then i pressed finished button to accomplish the thing...ans when i executed the java program with the above service name setup it said SO Excpetion : Network adapter could not establish the connection.
Well What the wrong i have done, help me...
Regards
Lensi.

hi,
I think you have to register the driver first. pls try the following program...
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
* This class tests the environment to check if JDBC is configured and
* connection to database is possible thru JDBC. Uses THIN driver to connect.
public class JDBCCheck {
public JDBCCheck() { }
private Connection conn = null;
private final int NO_DRIVER = 1;
private final int INVALID_URL = 17002;
private final int INVALID_CREDENTIALS = 1017;
private final int NULL_URL = 2;
private final int DATABASE_DOWN = 1034;
public static void main(String[] args) {
JDBCCheck check = new JDBCCheck();
check.dbconnect();
public void dbconnect() {
if(loadDriver())
if(connect())
doSomething();
public boolean loadDriver() {
boolean loadeddriver = false;
String jdbcDriver = System.getProperty("jdbc.driver.class");
// Use Oracle driver if nothing is set
if(jdbcDriver == null) jdbcDriver = "oracle.jdbc.driver.OracleDriver";
log("Loading JDBC Driver : class="+jdbcDriver+" ...");
// try to load driver
try {
Class.forName(jdbcDriver);
log("Loaded JDBC Driver ");
loadeddriver = true;
} catch (ClassNotFoundException noclassEx) {
error(NO_DRIVER,noclassEx);
return loadeddriver;
public boolean connect() {
boolean connected = false;
String jdbcURL = System.getProperty("jdbc.url");
String username = System.getProperty("jdbc.username");
String password = System.getProperty("jdbc.password");
if(username == null || password== null) {
username = "scott";
password = "tiger";
if(jdbcURL == null) error(NULL_URL,new Exception(" jdbc.url cannot be null "));
log("Connecting with URL="+jdbcURL+" as "+username+"/"+password);
try {
conn = DriverManager.getConnection(jdbcURL,username,password);
log("Connected to Database");
connected = true;
} catch (SQLException sqlEx) {
error(sqlEx.getErrorCode(),sqlEx);
return connected;
public void doSomething() {
Statement stmt = null;
ResultSet rset = null;
try {
stmt = conn.createStatement();
log("Created Statement object");
rset = stmt.executeQuery(" SELECT 'PASSED' FROM Dual ");
log("Retrieved ResultSet object");
if(rset.next())
log("Connection :"+rset.getString(1));
} catch (SQLException sqlEx) {
} finally {
try {
log("Closing Statment & ResultSet Objects");
if (rset != null) rset.close();
if (stmt != null) stmt.close();
if (conn != null) {
log("Disconnecting...");
conn.close();
log("Disconnected from Database");
} catch (Exception e) { }
public void log(String logMsg) {
System.out.println("Log: "+logMsg);
public void error(int errcode, Exception ex) {
String jversion = System.getProperty("java.version").substring(0,3);
String os = System.getProperty("os.name");
String excp = ex.toString();
// Driver not found in classpath
if(errcode == NO_DRIVER) {
String jarname = "classes12.jar";
String nlsjarname = "nls_charset12.jar";
if(jversion.equals("1.1")) {
jarname = "classes111.jar";
nlsjarname = "nls_charset11.jar";
else if(jversion.equals("1.4"))
jarname = "ojdbc14.jar";
System.out.println(" Error: JDBC Drivers not present in CLASSPATH ");
System.out.println("\n Your CLASSPATH is :"+System.getProperty("java.class.path"));
System.out.println("\n To add Oracle JDBC Drivers to CLASSPATH ");
// Windows
if(os.indexOf("Windows") != -1) {
System.out.println(" >set CLASSPATH=<path-to-"+jarname+">;<path-to-"+
nlsjarname+">;%CLASSPATH%;");
} else {
System.out.println(" $CLASSPATH=<path-to-"+jarname+">:<path-to-"+
nlsjarname+">:$CLASSPATH:");
System.out.println(" $export CLASSPATH");
System.out.println(" Oracle JDBC Drivers can be found in "+
"<ORACLE_HOME>/jdbc/lib directory or "+
"downloaded from http://otn.oracle.com/software/");
} else if (errcode == NULL_URL) {
System.out.println("Error: jdbc.url was not supplied");
System.out.println("Usage: java -Djdbc.url=jdbc:oracle:thin:@<hostname>:<port>:<db_sid> JDBCCheck ");
} else if (errcode == INVALID_URL) {
// Check if Invalid Database SID
if( excp.indexOf("ERR=12505") != -1)
System.out.println("Error: Invalid Database SID was specified in jdbc.url ");
System.out.println("Error: Invalid JDBC URL or DB Listener is down, refer to http://myjdbc.tripod.com/basic/jdbcurl.html ");
} else if (errcode == INVALID_CREDENTIALS) {
System.out.println("Error: Invalid username/password was specified ");
System.out.println("Try connecting to the database thru SQL Plus using the same username/password");
} else if (errcode == DATABASE_DOWN ) {
System.out.println("Error: The Database you are tying to Connect is down ");
System.out.println(" Start the Database and then try to connect ");
} else {
System.out.println("Error code not handled : "+errcode);
System.out.println("\nException Message :"+excp);
System.exit(0);
while running thig pgm, you should pass the driver URL..
java -Djdbc.url=jdbc:oracle:thin:@<hostname>:<port>:<db_sid> JDBCCheck

Network adapter could not establish the connection oracle 11g

Hi All,
I Have oracle 11g database in remote system.When I am trying to access through my Oracle Jdeveloper in my system,I am getting this error:
"Test Failed: network adapter could not establish the connection oracle 11g"
I also checked the ipaddress and listener status by giving lsnrctl status and service in remote system.Both are running.
What Should I do now?
Thanks in advance

902286 wrote:
Hi All,
I Have oracle 11g database in remote system.When I am trying to access through my Oracle Jdeveloper in my system,I am getting this error:
"Test Failed: network adapter could not establish the connection oracle 11g"
I also checked the ipaddress and listener status by giving lsnrctl status and service in remote system.Both are running.
What Should I do now?
Thanks in advance
For starters, you make sure that there is even the possibility of a network connection between your client machine and the machine hosting the "remote system". What happens when, on the client machine, you issue a 'ping <ip address of remote system>'?

Network Adapter could not establish connection during installation

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