For special needs, I use the unzipped jar format ojdbc6.jar.
The code source of my connection to the database oracle is :
import java.sql.DriverManager;
import java.sql.SQLException;
....
try
{
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:#x.x.x.x:1521:dev";
String login = "dev";
String password = "dev";
Class.forName(driver);
DriverManager.getConnection(url, login, password); // Error is generated by this line
}
catch (SQLException e)
{
System.err.println("error");
}
.....
When i launch the program, i have this exception :
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
at oracle.jdbc.driver.T4CTTIoauthenticate.setSessionFields(T4CTTIoauthenticate.java:999)
at oracle.jdbc.driver.T4CTTIoauthenticate.<init>(T4CTTIoauthenticate.java:235)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:370)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:546)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:236)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
.......
I use
ojdbc6.jar (11.2.0.2)
JRE 1.6.0_24
Oracle 11g
The database is accessible and the data connection are correct.
I was looking into the same error above for a RMI server issue. I added -Djava.security.policy=$RMIPATH"/policy.txt" to my runtime script and created a policy.txt file that stated.
grant {
permission java.security.AllPermission;
};
I hate disabling security but it works... My runtime is 1.8.31
Related
Kindly forgive the poor presentation and unethical coding lines if any
I'm trying to create my first jdbc class using embedded derby driver, I have created a maven project and added the following dependency
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derby</artifactId>
<version>10.11.1.1</version>
</dependency>
I created a derby database in eclipse database developer, the ping to the database was successful, created a table and inserted values into it.
When I run the below java program
import java.sql.*;
import org.apache.derby.jdbc.*;
public class SiteDao implements SiteDaoInterface {
public static void main(String[] args)
{
String url ="jdbc:derby:C://Users//shash//MyDB;create=true";
String username="xyz";
String password="xyz";
String query="select * from practise.abc";
//Class.forName("org.apache.derby.jdbc.ClientDriver")
try {
//Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
//DriverManager.registerDriver(new org.apache.derby.jdbc.EmbeddedDriver());
Connection con=DriverManager.getConnection(url,username,password);
Statement st= con.createStatement();
ResultSet rs=st.executeQuery(query);
int i,j;
while( rs.next())
{
i=rs.getInt(1);
j=rs.getInt(2);
System.out.println("data is"+i+","+j);
}
st.close();
con.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
I'm encountering the below error.
Exception in thread "main" java.lang.NoSuchMethodError: 'void org.apache.derby.iapi.services.i18n.MessageService.setFinder(org.apache.derby.iapi.services.i18n.BundleFinder)'
at org.apache.derby.impl.services.monitor.BaseMonitor.runWithState(Unknown Source)
at org.apache.derby.impl.services.monitor.FileMonitor.<init>(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.startMonitor(Unknown Source)
at org.apache.derby.iapi.jdbc.JDBCBoot.boot(Unknown Source)
at org.apache.derby.jdbc.EmbeddedDriver.boot(Unknown Source)
at org.apache.derby.jdbc.EmbeddedDriver.<clinit>(Unknown Source)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:377)
at com.smedia.dao.SiteDao.main(SiteDao.java:17)
I tried to go through the class mentioned in the error but encountered the below issue
I tried many solutions offered on internet but it didn't work
I'm using java 15.0.1 and even tried using derby-10.15.2.0 as suggested in some stackoverflow solutions but it didn't work (moreover there is no EmbeddedDriver class in 10.15.x.x version to my surprise)
Please let me know where am I ruining the code?
I am trying to connect to Aster server with jdbc drivers from java. I have added already the Jar files to the classpath.
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.*;
public class TeradataJDBCConnection {
public static void main(String[] args) throws Exception {
Class.forName("com.asterdata.ncluster.Driver");
String url="jdbc:ncluster://<ip_address>:2406/test";
Connection conn=DriverManager.getConnection(url, "user123", "test");
}
}
But I am getting the below error.
Exception in thread "main" java.sql.SQLException: [AsterData][ASTERJDBCDSII](34) : Failed to connect to 10.99.186.92. Please check the host address. ()
at com.asterdata.ncluster.jdbc.core.NClusterConnection.connect(Unknown Source)
at com.simba.jdbc.common.BaseConnectionFactory.doConnect(Unknown Source)
at com.simba.jdbc.common.AbstractDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at Tera.TeradataJDBCConnection.main(TeradataJDBCConnection.java:17)
Caused by: com.asterdata.ncluster.jdbc.core.MuleException: [AsterData][ASTERJDBCDSII](34) : Failed to connect to 10.99.186.92. Please check the host address. ()
... 6 more
No bug in the code.
Everything is running fine.
Download the jdbc driver from here.
https://aster-community.teradata.com/docs/DOC-2254
You could also download the driver from here: http://downloads.teradata.com/download/aster/aster-client-tools-for-windows
You can use the jar noarch-aster-jdbc-driver from AsterJDBC__indep_indep.06.10.00.02.zip file. This jar file works for my connection.
i am making connection with hive using java code but i am getting below error -
log4j:WARN No appenders could be found for logger (org.apache.thrift.transport.TSaslTransport).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" java.sql.SQLException: Error while processing statement: FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:Got exception: org.apache.hadoop.security.AccessControlException Permission denied: user=anonymous, access=WRITE, inode="/":oodles:supergroup:drwxr-xr-x
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkFsPermission(FSPermissionChecker.java:271)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:257)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:238)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:179)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:5904)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:5886)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkAncestorAccess(FSNamesystem.java:5860)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInternal(FSNamesystem.java:3793)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:3763)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:3737)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:778)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:573)
at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2013)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2009)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2007)
)
at org.apache.hive.jdbc.HiveStatement.execute(HiveStatement.java:275)
at com.oodles.example.HiveJdbcClient.main(HiveJdbcClient.java:23)
My Java code is below
package com.oodles.example;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class HiveJdbcClient {
private static String driverName = "org.apache.hive.jdbc.HiveDriver";
public static void main(String[] args) throws SQLException {
try {
Class.forName(driverName);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
Connection con = DriverManager.getConnection("jdbc:hive2://localhost:10000/default", "", "");
Statement stmt = con.createStatement();
String tableName = "testHiveDriverTable";
stmt.execute("drop table if exists " + tableName);
stmt.execute("create table " + tableName + " (key int, value string)");
System.out.println("success!");
stmt.close();
con.close();
}
}
and my other concern is that , whenever i make connection without starting hadoop services it gives error
log4j:WARN No appenders could be found for logger (org.apache.thrift.transport.TSaslTransport).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" java.sql.SQLException: Error while processing statement: FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:Got exception: java.net.ConnectException Call From oodles-Latitude-3540/127.0.1.1 to localhost:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused)
at org.apache.hive.jdbc.HiveStatement.execute(HiveStatement.java:275)
at com.oodles.example.HiveJdbcClient.main(HiveJdbcClient.java:21)
later issue gets resolved if i start hadoop services ,so i want to ask is it mandatory to start hadoop services in order to make connection with hive?
Since you have not mentioned what Hive version you are using, but base on the Driver name and connection URl I am assuming you are using Hive 0.11 or above.
So in Hive 0.11 or above you need to mention a username in the Connection URL:
DriverManager.getConnection("jdbc:hive2://localhost:10000/default", <user_name>, "")
NOTE: This user should have read+write permissions in HDFS.
Regarding you second query:
I am quite sure that Hadoop services are not required just for connection. I have never tried that.
Its my assumption, since we need to mention a database in the connection URL , which is a directory in HDFS. So it might need NAMENODE service to check the existence of that directory.
Hope it helps...!!!
This is my simple JDBC program but I am not able to establish connection. The class path is set up with ojdbc6.jar.
package Demo;
import java.sql.*;
public class JdbcDemo {
public static void main(String[] args)throws Exception {
// TODO Auto-generated method stub
System.out.println("hi");
Class.forName("oracle.jdbc.driver.OracleDriver");
System.out.println("hi1");
Connection con=DriverManager.getConnection("jdbc:oracle:thin:#localhost:1521:system","scott","tiger");
}
}
This is the output and the exception I am getting:
Exception in thread "main" java.sql.SQLRecoverableException: Io exception: The Network Adapter could not establish the connection
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:101)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:173)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:229)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:458)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:411)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:490)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:202)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:465)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at Demo.JdbcDemo.main(JdbcDemo.java:13)
Please check the following
Have you started Oracle TNS Listener, if not start by lsnrctl utility.
Have you put the correct port
Is your hostname correct in the database server?
The issue could be any one of the above.
// DbConnector.java
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.SQLException;
public class DbConnector {
public static void main(String[] argv) {
System.out.println("-------- Oracle JDBC Connection Testing ------");
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
} catch (ClassNotFoundException e) {
System.out.println("Where is your Oracle JDBC Driver?");
e.printStackTrace();
return;
}
System.out.println("Oracle JDBC Driver Registered!");
Connection connection = null;
try {
connection = DriverManager.getConnection(
"jdbc:oracle:thin:#172.17.119.108:1526:GESSDEV", "username",
"password");
} catch (SQLException e) {
System.out.println("Connection Failed! Check output console");
e.printStackTrace();
return;
}
if (connection != null) {
System.out.println("You made it, take control your database now!");
} else {
System.out.println("Failed to make connection!");
}
}
}
I have a jdbc jar with name odbc14.jar
javac -classpath odbc14.jar; DbConnector.java
compilation successfull
java -classpath odbc14.jar; DbConnector
OUTPUT ::
-------- Oracle JDBC Connection Testing ------
Where is your Oracle JDBC Driver?
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at DbConnector.main(DbConnector.java:13)
Please help me out to resolve this
I have sorted out the above problem. Now I'm gettin new exception
-------- Oracle JDBC Connection Testing ------
Oracle JDBC Driver Registered!
Connection Failed! Check output console
java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:420)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
The JDBC driver for use with ojdbc14.jar is oracle.jdbc.OracleDriver.
See: Loading JDBC Driver Class - ojdbc14.jar
Put your ojdbc14.jar in <jdk_home>\jre\lib\ext and ADD in CLASSPATH variable then you do not have to specify the classpath while compiling or running
If you are using java6 then oracle.jdbc.driver.OracleDriver is okay but it is deprecated. So it's better to use oracle.jdbc.OracleDriver
Just put the odbc14.jar this JAR in required JRE path like "C:\Program Files\Java\jdk1.7.0_65\jre\lib\ext".
This should solve your issue.
you should
try {
Class.forName("oracle.jdbc.OracleDriver");
}
and place the odbc14.jar in class path (if already not done)
Only you need to put into appsclassloader that is your classpath. I am not sure, why we need to put into jre/lib/ext