I am trying to connect to an oracle rac using jdbc thin . when i use the scan as the host, like this
String url = "jdbc:oracle:thin:@//<scan>:port/servicename;
I get error 1153, connection refused
but when i use the ip of the rac instead of the scan
String url = "jdbc:oracle:thin:@//<ip>:port/servicename;
The connection is successful
Is the issue at the application level? or is the problem with the server ....
I have installed and configured Oracle Business Intelligence Applications on top of one demo eBS instance as a source. Now I would like to change the OLTP to a different eBS instance but am not sure which steps to take. I don't know if I can add new EBS connection pool and a new DataWarehouse Connection Pool in the administration and have old ones preserved or I need to overwrite the old ones? Or (ideally) can I just change the OLTP and overwrite the old DWH?
Any document supporting the process of changing the eBS OLTP database without new installation of the OBIAPPS?
I have small Java code, which execute every day and checks for data in database using Cronj Schedular and everything works fine, but recently I have observed that, it is failing due to
java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@160.110.xx.xxx:1521/test
At the same time, when I run my test code to check Database connectivity that works fine without above exception. I'm unable to figure it out. Although, there was just slight code change, but that was nowhere related to Database or Database connection.
dbconf.java
public class dbconf {
private Connection connect;
private String connstr;
public Connection getConnection() throws SQLException {
connstr = "jdbc:oracle:thin:@160.110.xx.xxx:1521/test";
[Code] ....
Application Log file
Wed Jul 01 09:25:17 IST 2015:------- Initializing -------------------
Wed Jul 01 09:25:17 IST 2015:------- Scheduling Jobs ----------------
Wed Jul 01 09:25:17 IST 2015:------- Job Started Running ----------------
Thu Jul 02 06:00:00 IST 2015 : Job Executed..!! Bschedularv2.2
java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@160.xxx.67.xxx:1521/test
Sat Jul 04 06:00:00 IST 2015 : Job Executed..!! Bschedularv2.2
Sun Jul 05 06:00:00 IST 2015 : Job Executed..!! Bschedularv2.2
java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@160.xxx.67.xxx:1521/test
So, you can see, It failed on 3rd of July and 5th July as well. But, in between it ran fine.
I am trying to make connection with oracle database but when i run java file it's raise an error
"classnotfoundexception oracle.jdbc.driver.oracledriver"
DriverManager.getConnection(
"jdbc:oracle:thin:@erp:1521:ORCL", "apps",
"apps");
I am using a IN clause in Oracle DB to pass a collection of custId to retrieve the customer details. If it was 10 or 50 custId's as a collection in IN clause it works fine. But if the collection grows bigger to 500 or 1000 then it is pretty slow to load the JSP page with the customer details.
Here is the query:-
select CustName, CustAge, CustCity, CustPin from CUSTOMER where custId IN (....)
The list of custId that is passed through Hibernate query.setParameterList()
How to optimize this query to make sure it displays the customer details faster even if the collection of elements which we pass is huge?
We have a java application in our production enviroment using Spring framework which is configured with DBCP connection pool and the backend is Oracle database( version 11.2.0.3). Recently we encountered an occasionally happened situation(about once every week) and can be described as below:
The application schedules a task that runs every 10 minutes. And during task execution, the application would issue a SQL query of which the result is expected to be got within 10 seconds. At 11:51 a.m Oct 13th, however, the application failed to get the result within expected time, and 2 hours later, at 13:51, the result was finally returned to application. Due to lack of information at that time, we were not able to reproduce the same problem in test environment. At 15:31 p.m, Oct 29th, it happend again and this time we grasped all the information including thread dump and Oracle diagnostic information. We could found that:
1. Through oracle v$sql view, we could find that the SQL query is executed twice, at 15:31 and 17:31 respectively.
2. By analyzing TCP packets provided by network monitoring tools, it can be concluded that the request TCP packet containing SQL statement had been sent to Oracle and get executed, but after that JDBC only fetched first 80000 records out of 90000 records in total and then it stopped, didn't send any more request to Oracle to fetch rows. 2 hours later, Oracle sent a TCP keep alive packet and JDBC driver resume fetching remaining rows using the same connection(which can be confirmed by comparing source port of packets).
3. We dumped the thread at which JDBC hangs at socket read of JDBC driver
By the way, the version of JDBC we use is 11.2.0.1 and JDK version is 1.5.0_22.
The SQL statement is very simple:
select sum(n.netvalue) npvi,
n.HISCENEID hsid,
n.counterpartyid cid,
n.productid pid,
n.opendays
[Code] .....
I am trying to connect to Sql Server database using Oracle UCP with sqljdbc4-3.0 JDBC driver for Sql Server,with different ports and instances.
– the issue is with the port being ignored in the server string.
For example, using port 1440 connects to the default instance (which is on port 1433) rather than MSSQLINSTANCE1 which is on 1440.
Below are Server hosts used.
sql005.sqlasoftware.com (connects correctly to the default instance)
sql005.sqlasoftware.com:1440 (connects incorrectly to the default instance on port 1433)
sql005.sqlasoftware.comMSSQLINSTANCE1 (connects correctly to the named instance)
I run Java EE application on Glassfish server v3 together with Oracle 12 DB on the same machine under Windows Server 2012 64bit. I use latest ojdbc7 driver.
Connection pool config:
<jdbc-connection-pool validation-table-name="DUAL" steady-pool-size="20" statement-cache-size="100" associate-with-thread="true" statement-timeout-in-seconds="30" idle-timeout-in-seconds="60" max-wait-time-in-millis="2000" validate-atmost-once-period-in-seconds="20" datasource-classname="oracle.jdbc.pool.OracleDataSource" pool-resize-quantity="5" max-pool-size="60" res-type="javax.sql.DataSource" name="dbPool" is-connection-validation-required="true">
<property name="driverClass" value="oracle.jdbc.OracleDriver"></property>
<property name="user" value="xxx"></property>
[Code] ....
After 2 or 3 hours, when there is more than 1 user (3-5) using my application, it stops responding and I get this in glassfish logs
javax.enterprise.resource.resourceadapter.com.sun.enterprise.resource.allocator|_ThreadID=152;_ThreadName=Thread-2;|RAR5038:Unexpected exception while creating resource for pool dbPool. Exception : javax.resource.spi.ResourceAllocationException: Connection could not be allocated because: IO Error: Socket read timed out
[Code] ....
From the database side it looks like this
Fatal NI connect error 12560, connecting to:
(LOCAL=NO)
VERSION INFORMATION:
TNS for 64-bit Windows: Version 12.1.0.1.0 - Production
Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 12.1.0.1.0 - Production
[Code] ....
When I just reset db listener everything works ok for next 1-2 hours (depends on application load). So temporary solution is to run bat script from windows scheduler to reset the listener every 1h. I tried everything I could find - applied these parameters:
- Sqlnet.ora:
SQLNET.INBOUND_CONNECT_TIMEOUT=180
SQLNET.EXPIRE_TIME=5
- Listener.ora:
INBOUND_CONNECT_TIMEOUT_LISTENER_IPC=120
But still without success
What I have in my tnsnames.ora and verify it all works via sqlplus
CDB1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = cdb1)
[Code] ....
I am trying to get RJDBC to work so I can connect to Oracle from R doing some data analysis..
This connection string works for my local db which I have it running in my Virtual Box
con <- dbConnect(drv, "jdbc:oracle:thin:@//localhost:1521/orcl", "demo", "demo")
However, it does not work when I do it for the remote db that I really need to pull data from...
> con <- dbConnect(drv, "jdbc:oracle:thin:@//ymsdbppr-scan:1522/YMQCTPRD", "user_read", "user_read")
Error in .jcall(drv@jdrv, "Ljava/sql/Connection;", "connect", as.character(url)[1], :
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12514, TNS: listener does not currently know of service requested in connect descriptor
I have failed with all possibilities that I know to make this program success. Getting error as :
java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
Program goes like this.
import java.sql.*;
public class ExcelConnection {
public static void main (String[] args){
try {
Connection conn = getConnection("TEST.xls");
Statement stmt = conn.createStatement();
[Code] ....
Suppose I issue a command such as "ALTER SESSION SET WORKAREA_SIZE_POLICY=MANUAL" inside a stored procedure called via JDBC and then release the connection back to the pool. When the connection is next reused by a completely independant Weblogic thread is there any chance that the non-default setting could be inherited by the new thread?
I realize that there is a conceptual difference between a process, a connection, and a session so theoretically the answer to my question should be "no."
But is that the case in real life?
I am new to java. I have recently learned JDBC connection pool in tomcat. To make code reuse I want to share the connection among all servlets without any conflict.
Here My code snippet:
public class GetConnection{
private DataSource ds;
public Connection getConnection(){
try {
InitialContext initialContext = new InitialContext();
Context context = (Context) initialContext.lookup("java:comp/env");
ds = (DataSource) context.lookup("connpool");
[Code] .....
Is this right way to do. Or I will get any problem due to concurrent threads.
Connection from Java app (installed on desktop) to sybase database (deployed on AIX machine) is going unencrypted.i.e Traffic can be read by some hacking tool and to fix I need to enable SSL/TLS.I am using JDBC to connect to sybase. I believe apart from setting the jconnect properties there are several other things which needs to be done.
View Replies View RelatedYesterday, I established a connection with oracle 12c, codes is here:
ods.setURL("jdbc:oracle:thin:c##mytest/myt@//myhost:1521/orcl");Connection conn=ods.getConnection();
where "c##mytest/myt" is username and password. It worked well.
But, today, "IO Error:The Network Adapter could not establish the connection" appeared when I tried to run my program again.
I changed //myhost into 127.0.0.1, it worked again.(Before I did this, I checked lsnrctl and regedit and firewall....., no difference)
Here is my question:
1) What happens between //myhost to 127.0.0.1, hostname cannot be use to JDBC? If yes, how?
Besides, I have some other questions:
2) How import a *.dmp file which exported from 10g into 12c?
3)If I need upgrade 10g to 12c, what shall I do?
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production0PL/SQL Release 12.1.0.2.0 - Production0CORE12.1.0.2.0Production0TNS for Linux: Version 12.1.0.2.0 - Production0NLSRTL Version 12.1.0.2.0 - Production0
Using JavaSE-1.7
Using ucp.jar,ons.jar and OJDBC7.jar
I set up the datasource as follows :
pds = PoolDataSourceFactory.getPoolDataSource();
pds.setConnectionFactoryClassName(factoryClassName);
pds.setMaxPoolSize(maxPoolSize); maxPoolSize 10
pds.setMinPoolSize(minPoolLimit); minPoolLimit 1
[Code] ....
In the class that actually uses it I create a method variable for the connection object.
Closing the connection as well as pds.getConnection().close();e
I am thinking that at the most I should have only one inactive connection showing up when I monitor the session. How do I configure the pool as to only show on inactive connection? I am running the test queries once every five minutes. But I am opening three connections each time.
I want to write code in java to scan documents.
View Replies View RelatedWhere do I have to put the ojdbc6.jar file so that Java finally recognizes it?I'm trying to connect to a Oracle XE databse from a Java application, but
Class.forName("oracle.jdbc.OracleDriver");
Will throw a ClassNotFoundException no matter where I put the driver. Stuff like this should be extremely simple but I am about to give up for good now.
I have created a JSP page, on click of a particular button, the control moves to the servlet "TestServlet".
This is the code under TestServlet:
import java.io.IOException;
import java.io.PrintWriter;
import java.security.Principal;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
[Code]...
Now, I have got a comment saying I should get the database connection from connection pool. And one more issue is that I have used the function System.getProperty("user.name") to get the username which i have logged in. But this code will be run on Unix which will not support this function. Any function where I can get the windows username. There is a function getUserPrincipal(), but this function returns a NULL. How to resolve this.
I configured a connection pool in tomcat 7. For every database activity I get a connection from the pool. Do I have to close the connection like other regular connection after the database operation is done? If I close the connection will it have any effect on the connection pool?
View Replies View RelatedI used the PLPDF software to generate a blob in PDF format in PL/SQL. I can open it in a browser but I would rather send it directly to a printer from PL/SQL.
I know I can use tools like BI and Jasper but I want this particular solution to be 100% database solution.
I was wondering of I can use JAVA in Oracle to send the blob to a printer.
I've Installed oracle JDK version 1.8 on a debian machine that already has openjdk 1.6.i've set the path variable in etc/login.defs and java_home variable In etc/environment. When I echo $JAVA_HOME it points to the oracle version correctly and when I run javac It uses the oracle 1.8 version. The problem is when I run the java command , It runs the openjdk 1.6 version and I'm not sure why.If I type java -version It shows the openjdk version.
View Replies View RelatedI have written java program which can extract online data from url and i want to store it in data base in new token row in table so than i can use in my application . how could it be done using type4 drive ..
These are my code ...
import javax.swing.text.html.parser.*;
import javax.swing.text.html.*;
import javax.swing.text.*;
import java.io.*;
import java.util.StringTokenizer;
import java.net.*;
public class ParseTest extends HTMLEditorKit.ParserCallback {
[Code] ......
I am running a page that launches a Java Webstart app and a Java Applet. I don't have problem launching this page in Firefox, but I have to run it in IE11. The thing is IE11 keep redirecting me to oracle java download site. I have install Java RE like 3 times from IE already. What am I missing?
View Replies View Relatedcalling a parameterized stored procedure in java jdbc from sql server.The stored procedure goes like this in sql
create proc patientreg
@id int
as
begin
select [patient_id],[Psurname], [pFirstname], [pMiddlename], [reg_date], [DOB], [Sex], [Phone_num], [Addr],[Email],[dbo].[fncomputeage](DOB) from [dbo].[Patient_registration] where [patient_id] = @id
end
please note dbo.fncompute(DOB) is a function
To call it in jdbc it goes like this
try{
String str = "{call patientreg(?)}";
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection("jdbcdbc:GeneralHospit al");
cstmt = con.prepareCall(str);
cstmt.setInt(1, Integer.parseInt(t.getText()));
[code]....
after doing it this way it throwing an exception: Error:java.sql.SQLException: Parameter 1 is not an OUTPUT parameter.
I want to create an application wich can handle xml files ( display xml files's data on a html page) + insert those data into an oracle database.
I'm new to that, it a project for my internship. wich API is the most appropriate for that ( Jdom or Xstream or other), wich framework i can use ( there is only 3 IHM : connexion, upload file, display data, confirmation insertion data)?
I'm creating a web applicaion. for that i want to create a registration page. and this registration details have to be stored in the database.
I'm getting the below error while trying to send the data ...
The requested resource (/cmd/InsertRegtodb) is not available.
Here cmd is project name and InsertRegtodb is servlet name.
Actually the servlet is present is the mentioned address. but it is not connecting to it
There is one more servlet in the same folder and which is accessible from another jsp. But this servlet is not accessible even though i have used same code as it is used for the servlet which worked for me previously...