1. Should I catch exceptions thrown when closing java.sql.Connection stackoverflow.com
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2. Why exception throws while closing the connection? stackoverflow.comI'm tring to use orientdb. The sample is very simple: |
3. Caused by: Exception [TOPLINK-8034] + netbeans database connection forums.netbeans.orghi, when I connected to a database. it worked only by a table other database table connections did not work. it gives exception below. any help is appreciated. Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: An exception occured while creating a query in EntityManager at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerImpl.createQuery(EntityManagerImpl.java:209) at arraydeneme.form6.initComponents(form6.java:3 at arraydeneme.form6. |
4. Stale Connection Exception coderanch.comHi I am using stateless session beans having Transaction managed by container for accessing db2 database. Beans are deployed on WAS 4.02. I am getting stale connection exception. When I try to catch staleconnection exception in DAO method and reopen the connection object getting Transaction Aborted Exception. What is the reason and any work around ? pls reply asap. sandeep |
5. Exception while connecting to database coderanch.comHi, i am getting the following exception when i try to connect to mysql from my program. i am trying to connect with the following program statement >>sql=DriverManager.getConnection("jdbc:mysql://Bithorax/mysql?user=samurai&password=helloworld"); The user samurai already exists in the database; exception: ------------------------------------------------------------------ java.sql.SQLException: General error, message from server: "Access denied for user: 'samurai@bithorax' to database 'mysql'" at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1876) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1803) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:887) at com.mysql.jdbc.Connection.createNewIO(Connection.java:1627) at ... |
6. nullpointer exception while trying to connect coderanch.comFriends, I am getting a strange problem. I am trying to connect to a local Access DB through sun.jdbc.odbc.JdbcOdbcDriver. The program works fine when I run it as a standalone program. But the same piece of code gives a java.lang.NullPointerException at sun.jdbc.odbc.JdbcOdbcDriver.initialize(JdbcOdbcDriver.java:435) when I run in the Websphere environment. Are there any particular JARs that I need to replace in WSAD ... |
7. Getting a "connection is already closed" exception with 2 or more users coderanch.comI was testing my code today with 2 users and got the following error when we both clicked the same link. java.sql.SQLException: Connection has already been closed. the method that is run when that link is clicked goes like this. opens a connection (using connection pools) runs sql puts data into java object closes connection. when using connection pools, am I ... |
8. Cannot load connection class because of underlying exception: 'java.lang.Secur coderanch.comHi, I am connecting a web application to a MySql database. I have the mysql connector 3.1.7 driver file. The application waqs working fine in my old system but when I ported my workspace to the new laptop I am getting the following exception: Cannot load connection class because of underlying exception: 'java.lang.SecurityException: Prohibited package name: java.sql'. The entire stack trace ... |
9. Connection leak exception. coderanch.comHi, I one of my applications deployed in weblogic application server. I often get connection leak warning message on server console (though my application flow is not affected by this warning message). I have to investigate the cause for the connection leak, first thing I have made sure is all opened connection are close correctly with in the code, still I ... |
10. Stale Connection Exception coderanch.comHi, The below exception is comming from both Oralce and AS40. My Application run fine if it is restarted. Currently the application is running on AIX, WAS4.0 and Java 1.2 is used to develop. After a few days, suddely the Application gets hung and stops functioning and when I see the Log Files I get the below error. Iam not able ... |
11. Connect Class Cast Exception coderanch.com |
12. exception while connecting to the database coderanch.comFirst find out the maximum number of sessions the database is configured to allow: select * from v$parameter vp where lower(vp.NAME) = 'sessions'; Then look at what sessions are curently connected: select vs.username, vs.program, vs.module, to_char(vs.logon_time,'DD-MON-YYYY HH24:MI:SS') lt from v$session vs where vs.audsid <> 0 Only then can you decide if it is an application error or a misconfigured database. |
13. Stale Connection Exception: coderanch.comHi, In our J2EE application, we are using Struts-Spring-Hibernate framework. We are getting following error on SIT while running our Web based application. This error occurs while executing the code below. The same code works fine on Development environment with identical configuration. We feel it is something related to the DataSource configuration in WebSphere Application Server. Quick help is much appreciated ... |
14. On connection: Array Index Out Of Bounds Exception: 4 coderanch.comAt least somebody will reply here. I can't see anything which is likely to throw an out of bounds exception here. Are you passing any arrays to anything which might pass them to T4C8 etc? Are you passing any multiple parameters (look for an ellipsis ... in the last parameter of any methods you are calling)? It Put your entire code ... |
15. SQL Exception Connection is busy with results for another hstmt. coderanch.comHi Ranchers I am running a Java application which has multiple sql queries including update and insert.Basically I am connecting to a MS Sql Server. But I am getting the following error. Error Details - [Microsoft][ODBC SQL Server Driver]Connection is busy with results for another hstmt. I am getting this error only when my Jave application is accessing the database to ... |
17. Io exception: Connection refused(DESCRIPTION coderanch.com |
18. BasicDataSource Connection Pool Exception coderanch.comHi Experts, I got exception "com.mysql.jdbc.CommunicationsException" when executing query to MySQL Server using one of the connection from connection pools. From my observation, the connection works properly (I open a jsp for making an query to a table. The SQL statement executes successfully ), However, after 9 hours, when I trigger the same jsp again, It failed with long waiting, in ... |
19. DB Connections and Exception Handling in Web Application coderanch.comUsing a connection pool that's managed by the container is really the only good way to deal with database connections in a web application. Opening a database connection is a relatively slow and heavy operation. Your webapp will become very slow if you open a new connection for each request when the app needs to use the database. It would also ... |
20. "Cannot get a connection" exception coderanch.comHi everyone, I'm developing a web-application using the JSF framework and I'm deploying it on a Apache Tomcat 6.0.18. The server is installed on a CentOS5 Linux server. Sometime, apparently without any reason I get the following exception: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot get a connection, pool error Timeout waiting for idle object and the DB cannot be queried anymore (no more connections possible ... |
21. connection closed exception? coderanch.com |
22. Connection to database Exception coderanch.comHi I am trying to connect to oracle database in my application however i get the following exception Inside the second try block java.sql.SQLException: Io exception: The Network Adapter could not establish the connection at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:254) at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:386) at oracle.jdbc.driver.PhysicalConnection. |
23. Exception during connecting to sql server2005 coderanch.comHii Everyone wen i tried to net conn from driver manager i got following exception i am using to connect to sqlserver which is on my local machine... try { Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); System.out.println("driver found"); Connection con =DriverManager.getConnection("jdbc:sqlserver://"); System.out.println("connection avaliable"); } catch(Exception e) { e.printStackTrace(); } com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host localhost, port 1433 has failed. Error: "Connection refused: connect. Verify ... |
24. Exception in connect_var: javax.net.ssl.SSLHandshakeException coderanch.com |
25. DB Connection Exception in Multithreaded code coderanch.comHi, There's a multithreaded code that creates N no. of threads, each thread creates a new DB Connection instance to connect to a DB using JDBC. So there are N no. of individual connections to the database created by each thread. In this context find that when one of thread is being created and it tries to get the DB Connection ... |
26. unable to connect my program to database it is showing the exception forums.oracle.com |
27. DB CONNECTION - EXCEPTION_ACCESS_VIOLATION forums.oracle.comStack: [0x0b250000,0x0b290000), sp=0x0b28f610, free space=253k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) C [ntdll.dll+0x1010] C [ODBC32.dll+0xa244] C [ODBC32.dll+0xa653] C [JdbcOdbc.dll+0x1157] j sun.jdbc.odbc.JdbcOdbc.allocConnect(J[B)J+0 j sun.jdbc.odbc.JdbcOdbc.SQLAllocConnect(J)J+30 j sun.jdbc.odbc.JdbcOdbcDriver.allocConnection(J)J+6 j sun.jdbc.odbc.JdbcOdbcConnection.initialize(Ljava/lang/String;Ljava/util/Properties;I)V+37 j sun.jdbc.odbc.JdbcOdbcDriver.connect(Ljava/lang/String;Ljava/util/Properties;)Ljava/sql/Connection;+129 J java.sql.DriverManager.getConnection(Ljava/lang/String;Ljava/util/Properties;Ljava/lang/ClassLoader;)Ljava/sql/Connection; j java.sql.DriverManager.getConnection(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/sql/Connection;+41 j com.realm.connect.conndbresources.FADatabaseResourceManager.getConnection()Ljava/sql/Connection;+59 j com.realm.connect.conndbresources.FADatabaseResourceManager.getListOfVersionsInDYNANotInJDE(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/util/HashMap;)Ljava/util/ArrayList;+245 J com.realm.connect.process.PopulateReXMLLeaseData.createLeaseData(Lcom/realm/connect/jaxb/sc/ConnSelectCriteria;Ljava/lang/String;Lcom/realm/connect/jaxb/rexml/PropertyDataType$RetailSalesType;Lcom/realm/connect/jaxb/rexml/PropertyDataType$ReportCategoriesType;Ljava/util/HashMap;Ljava/lang/String;Lcom/realm/connect/jaxb/rexml/LeaseDataType;)Lcom/realm/connect/jaxb/rexml/LeaseDataType; v ~RuntimeStub::alignment_frame_return Runtime1 stub j com.realm.connect.process.BuildSelectionCriteriaReXML.createReXML(Ljava/lang/String;Ljava/lang/String;Ljava/util/Hashtable;Ljava/lang/String;)V+1115 j com.realm.connect.process.BuildSelectionCriteriaReXML.RunBuildSelectionCriteriaReXML(Lcom/realm/connect/jaxb/sc/ConnSelectCriteria;Ljava/lang/String;Ljava/lang/String;)V+1394 j com.realm.connect.process.BuildSelectionCriteriaReXML. |