I am experiencing a very strange problem , I have few Junit test cases which create JDBC Oracle connection and close when they are done. For example I have 5 junit
FetchTest
InsertTest
UpdateTest
DeleteTest
First 2 test cases are running perfectly fine, But when 3rd test case is try to connect to Oracle through JDBC its through Exception
Exception occured while creating connection object using DriverManager
at java.net.SocketOutputStream.socketWrite0(Native Method) at
java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113)
at java.net.SocketOutputStream.write(SocketOutputStream.java:159) at
oracle.net.ns.DataPacket.send(DataPacket.java:199) at
oracle.net.ns.NetOutputStream.flush(NetOutputStream.java:211) at
oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:227)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:175) at
oracle.net.ns.NetInputStream.read(NetInputStream.java:100) at
oracle.net.ns.NetInputStream.read(NetInputStream.java:85) at
oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:122)
at
oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:78)
at
oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1179)
at
oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1155)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:279) at
oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:186) at
oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:366)
at
oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:752)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:359) at
oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:531)
at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:221)
at
oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:503) at
java.sql.DriverManager.getConnection(DriverManager.java:571) at
java.sql.DriverManager.getConnection(DriverManager.java:215)
And then my 4th Test will also run fine, getting connection and deleting data as expected.
I also tried to ignore 3rd Test case, And then the 4th test case giving same Exception.
What are the possible cause of this exception ?
Is this any issue with time ? Because this exception occur in daily build in Jenkins
java.sql.SQLRecoverableException: IO Error: Connection reset by peer: socket write error
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:421)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:531)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:221)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:503)
Related
When ever I run backend server in Spring boot, I'm getting this error:
Compilation with Kotlin compile daemon was not successful
java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is:
java.net.SocketException: Connection reset
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:236)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:161)
at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:227)
at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:179)
at com.sun.proxy.$Proxy92.compile(Unknown Source)
at org.jetbrains.kotlin.compilerRunner.GradleKotlinCompilerWork.incrementalCompilationWithDaemon(GradleKotlinCompilerWork.kt:307)
.
.
.
at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:270)
at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:119)
at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:124)
.
.
Caused by: java.net.SocketException: Connection reset
[backend] at java.net.SocketInputStream.read(SocketInputStream.java:210)
[backend] at java.net.SocketInputStream.read(SocketInputStream.java:141)
.
.
.
Unable to clear jar cache after compilation, maybe daemon is already down: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is:
[backend] java.net.ConnectException: Connection refused: connect
[backend] Could not connect to kotlin daemon. Using fallback strategy.
Then, I run gradle build clean and run backend server again and this issue gets fixed. I'm not sure what's causing this issue.
What's the reason behind this and how can I fix this?
I am replacing the console operator in WordCountDemo but it is giving me a operatorError in STRAM Events. When I click on it it shows me nullpointer error. I am very new to datatorrent.
Here is the complete error message:
Abandoning deployment due to setup failure. java.lang.NullPointerException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at com.datatorrent.lib.db.jdbc.JdbcStore.connect(JdbcStore.java:163)
at com.datatorrent.lib.db.jdbc.JdbcTransactionalStore.connect(JdbcTransactionalStore.java:118)
at com.datatorrent.lib.db.AbstractTransactionableStoreOutputOperator.setup(AbstractTransactionableStoreOutputOperator.java:94)
at com.datatorrent.lib.db.jdbc.AbstractJdbcTransactionableOutputOperator.setup(AbstractJdbcTransactionableOutputOperator.java:81)
at com.datatorrent.lib.db.jdbc.AbstractJdbcTransactionableOutputOperator.setup(AbstractJdbcTransactionableOutputOperator.java:58)
at com.datatorrent.stram.engine.Node.setup(Node.java:182)
at com.datatorrent.stram.engine.StreamingContainer.setupNode(StreamingContainer.java:1290)
at com.datatorrent.stram.engine.StreamingContainer.access$100(StreamingContainer.java:129)
at com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1369)
I guess you didn't set the properties that is needed by jdbc operator. You need to set driver/databaseurl/username/password
Here is an example
dt.operator."your operator name".store.databaseDriver=jdbc.mysql
dt.operator."your operator name".store.databaseUrl=....
Recently I have updated Spring version 4.2.4.RELEASE from 3.2.1.RELEASE
I was using `JmsTemplatez to convert and send message as:
jmsTemplate.convertAndSend(request, new CorrelationIdPostProcessor(request.getMessageId(), messageQueueAuditLogger));
After the upgrade to Spring 4.2.4.RELEASE I started to get an exception:
org.springframework.jms.UncategorizedJmsException: Uncategorized exception occured during JMS processing; nested exception is org.apache.activemq.AlreadyClosedException: this connection
at org.springframework.jms.support.JmsUtils.convertJmsAccessException(JmsUtils.java:316)
Caused by: org.apache.activemq.AlreadyClosedException: this connection
at org.apache.activemq.pool.PooledConnection.assertNotClosed(PooledConnection.java:161)
at org.apache.activemq.pool.PooledConnection.start(PooledConnection.java:77)
at org.springframework.jms.connection.SingleConnectionFactory$SharedConnectionInvocationHandler.localStart(SingleConnectionFactory.java:632)
at org.springframework.jms.connection.SingleConnectionFactory$SharedConnectionInvocationHandler.invoke(SingleConnectionFactory.java:569)
at com.sun.proxy.$Proxy52.start(Unknown Source)
at org.springframework.jms.core.JmsTemplate.execute(JmsTemplate.java:487)
Active MQ version in use: 5.4.2
If any one has came across this error please share your comments.
Previously I was using org.apache.activemq.pool.PooledConnectionFactory which is causing this exception. I have replaced PooledConnectionFactory with org.springframework.jms.connection.SingleConnectionFactory and this has resolved the problem
I am trying to connect to Oracle using Slick.
I got the slick-extensions_2.10-1.0.0.jar.
Added the line below in Scala
Database.forURL("jdbc:oracle:thin:#myhost:myport:dbalias", "myid", "mypwd", null, driver =
"com.typesafe.slick.driver.oracle.OracleDriver") withSession {.......}
What is the right URL to use for this driver since I got the following error:
Exception in thread "main" java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:#myhost:myport:dbalias
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at scala.slick.session.Database$$anon$2.createConnection(Database.scala:105)
at scala.slick.session.BaseSession.conn$lzycompute(Session.scala:207)
at scala.slick.session.BaseSession.conn(Session.scala:207)
at scala.slick.session.BaseSession.close(Session.scala:221)
at scala.slick.session.Database.withSession(Database.scala:38)
at scala.slick.session.Database.withSession(Database.scala:46)
It seems you did not make the oracle jdbc driver available in classpath when running your program.
We are running more than 2000 junit, Most of the tests connect to an Oracle database with jdbc calls. We have a problem with very few of the tests that can not connect to the DB for some reason. Here is some background:
We are running the tests in a CI server - Jenkins
Tests are being run by ANT with <junit> task with fork="true"
Only few of the tests fail with Could not connect to database error, it's not consistent, sometimes they fail and sometimes not.
The tests that fail are usually the first tests in each test suite
The rest of the tests that also connect to the db do not fail.
So far we have no luck in solving it.
Anyone encountered something similar ?
Here's a stack trace:
Error Message
Could not connect to database using the connect string jdbc:oracle:thin:R71/R71#abc.def:1521:DB11g
Stacktrace
java.lang.RuntimeException: Could not connect to database using the connect string jdbc:oracle:thin:R71/R71#abc.def:1521:DB11g
at com.abc.common.dao.JDBCUtils.getThinConnection(JDBCUtils.java:257)
at com.abc.common.dao.JDBCUtils.getConnection(JDBCUtils.java:115)
at com.abc.common.dao.JDBCUtils.queryForInt(JDBCUtils.java:714)
at com.abc.test.utils.MetaDataLanguageDBTest.testMetaDataLanguages(MetaDataLanguageDBTest.java:13)
Caused by: java.sql.SQLRecoverableException: IO Error: Connection reset
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:428)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:536)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:228)
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:207)
at com.abc.common.dao.JDBCUtils.getThinConnection(JDBCUtils.java:254)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at oracle.net.ns.DataPacket.send(DataPacket.java:199)
at oracle.net.ns.NetOutputStream.flush(NetOutputStream.java:211)
at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:227)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:175)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:100)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:85)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:123)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:79)
at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1122)
at oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1099)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:288)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:191)
at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:366)
at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:752)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:366)
Standard Error
java.sql.SQLRecoverableException: IO Error: Connection reset
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:428)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:536)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:228)
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:207)
at com.abc.common.dao.JDBCUtils.getThinConnection(JDBCUtils.java:254)
at com.abc.common.dao.JDBCUtils.getConnection(JDBCUtils.java:115)
at com.abc.common.dao.JDBCUtils.queryForInt(JDBCUtils.java:714)
at com.abc.test.utils.MetaDataLanguageDBTest.testMetaDataLanguages(MetaDataLanguageDBTest.java:13)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:421)
at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:912)
at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:766)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at oracle.net.ns.DataPacket.send(DataPacket.java:199)
at oracle.net.ns.NetOutputStream.flush(NetOutputStream.java:211)
at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:227)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:175)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:100)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:85)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:123)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:79)
at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1122)
at oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1099)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:288)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:191)
at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:366)
at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:752)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:366)
... 25 more
Thanks.
I know this question is super old, but I just had the same problem. The solution for me was to add the following environment variable to my tests:
-Djava.security.egd=file:///dev/urandom
In short, the Oracle JDBC driver uses /dev/random by default, which can block if there isn't enough entropy on the system. The full explanation can be found in this answer.
It could be that you are running out of connections. I would try using a DataSource backed by a connection pool instead.