I am trying to access the read replica database from Spring R2DBC.My connection string looks like this
spring:
r2dbc:
url: r2dbc:mysql://db-master-dev-pvt.xyz***.com:3306,db-replica-dev-pvt.xyz**.com:3306/employee?autoReconnect=true&useUnicode=yes&characterEncoding=UTF-8
username:
password:
but I am getting an unknown host. I am following the below document
https://r2dbc.io/spec/0.8.2.RELEASE/spec/html/#overview.connection.discovery
as per Documentation, we can multiple host configurations separated by comma (,) but when I have tried to do a query or do any health check it's throwing an unknown host exception. Same configuration working fine with Spring Data JPA.
{
"database": "MySQL",
"validationQuery": "validate(REMOTE)",
"error": "java.net.UnknownHostException: failed to resolve 'db-master-dev-pvt.xyz**.com:3306,db-replica-dev-pvt.xyz**.com:3306'"
}
Stack Trace
{"#timestamp":"2021-02-12T11:34:18.438Z","#version":"1","message":"Operator called default onErrorDropped","logger_name":"reactor.core.publisher.Operators","thread_name":"reactor-tcp-epoll-1","level":"ERROR","level_value":40000,"stack_trace":"java.net.UnknownHostException: failed to resolve 'myDB-master-dev-pvt.xyz**.com:3306,myDB-replica-dev-pvt.myAPI.com:3306' after 2 queries \n\tat io.netty.resolver.dns.DnsResolveContext.finishResolve(DnsResolveContext.java:1013)\n\t... 35 common frames omitted\nWrapped by: org.springframework.transaction.CannotCreateTransactionException: Could not open R2DBC Connection for transaction; nested exception is java.net.UnknownHostException: failed to resolve 'myDB-master-dev-pvt.myAPI.com:3306,MyDB-replica-dev-pvt.myAPI.com:3306' after 2 queries \n\tat org.springframework.r2dbc.connection.R2dbcTransactionManager.lambda$null$5(R2dbcTransactionManager.java:226)\n\tat reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:94)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.MonoFlatMap$FlatMapMain.onError(MonoFlatMap.java:172)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.FluxPeek$PeekSubscriber.onError(FluxPeek.java:221)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.FluxRetry$RetrySubscriber.onError(FluxRetry.java:94)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onError(FluxPeekFuseable.java:234)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.MonoFlatMap$FlatMapMain.onError(MonoFlatMap.java:172)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.FluxPeek$PeekSubscriber.onError(FluxPeek.java:221)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.FluxPeek$PeekSubscriber.onError(FluxPeek.java:221)\n\tat reactor.pool.AbstractPool$Borrower.fail(AbstractPool.java:427)\n\tat reactor.pool.SimpleDequePool.lambda$drainLoop$5(SimpleDequePool.java:309)\n\tat reactor.core.publisher.FluxDoOnEach$DoOnEachSubscriber.onError(FluxDoOnEach.java:186)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.MonoFlatMap$FlatMapMain.onError(MonoFlatMap.java:172)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.MonoFlatMap$FlatMapMain.onError(MonoFlatMap.java:172)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.FluxMap$MapSubscriber.onError(FluxMap.java:132)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.MonoCreate$DefaultMonoSink.error(MonoCreate.java:189)\n\tat reactor.netty.resources.NewConnectionProvider$DisposableConnect.onError(NewConnectionProvider.java:139)\n\tat org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onError(ScopePassingSpanSubscriber.java:95)\n\tat reactor.core.publisher.MonoFlatMap$FlatMapMain.secondError(MonoFlatMap.java:192)\n\tat reactor.core.publisher.MonoFlatMap$FlatMapInner.onError(MonoFlatMap.java:259)\n\tat reactor.netty.transport.TransportConnector$MonoChannelPromise.tryFailure(TransportConnector.java:464)\n\tat reactor.netty.transport.TransportConnector.lambda$doResolveAndConnect$6(TransportConnector.java:271)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:552)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491)\n\tat io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:616)\n\tat io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:609)\n\tat io.netty.util.concurrent.DefaultPromise.setFailure(DefaultPromise.java:109)\n\tat io.netty.resolver.InetSocketAddressResolver$1.operationComplete(InetSocketAddressResolver.java:62)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:571)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:550)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491)\n\tat io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:616)\n\tat io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:609)\n\tat io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:117)\n\tat io.netty.resolver.dns.DnsNameResolver.tryFailure(DnsNameResolver.java:936)\n\tat io.netty.resolver.dns.DnsNameResolver.access$500(DnsNameResolver.java:90)\n\tat io.netty.resolver.dns.DnsNameResolver$5.operationComplete(DnsNameResolver.java:956)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:552)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491)\n\tat io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:616)\n\tat io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:609)\n\tat io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:117)\n\tat io.netty.resolver.dns.DnsResolveContext.finishResolve(DnsResolveContext.java:1021)\n\tat io.netty.resolver.dns.DnsResolveContext.tryToFinishResolve(DnsResolveContext.java:966)\n\tat io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:414)\n\tat io.netty.resolver.dns.DnsResolveContext.tryToFinishResolve(DnsResolveContext.java:938)\n\tat io.netty.resolver.dns.DnsResolveContext.access$700(DnsResolveContext.java:63)\n\tat io.netty.resolver.dns.DnsResolveContext$2.operationComplete(DnsResolveContext.java:467)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:571)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:550)\n\tat io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491)\n\tat io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:616)\n\tat io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:605)\n\tat io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)\n\tat io.netty.resolver.dns.DnsQueryContext.trySuccess(DnsQueryContext.java:201)\n\tat io.netty.resolver.dns.DnsQueryContext.finish(DnsQueryContext.java:193)\n\tat io.netty.resolver.dns.DnsNameResolver$DnsResponseHandler.channelRead(DnsNameResolver.java:1230)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)\n\tat io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)\n\tat io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)\n\tat io.netty.channel.epoll.EpollDatagramChannel.read(EpollDatagramChannel.java:681)\n\tat io.netty.channel.epoll.EpollDatagramChannel.access$100(EpollDatagramChannel.java:58)\n\tat io.netty.channel.epoll.EpollDatagramChannel$EpollDatagramChannelUnsafe.epollInReady(EpollDatagramChannel.java:499)\n\tat io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:480)\n\tat io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)\n\tat io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)\n\tat io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)\n\tat io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)\n\tat java.lang.Thread.run(Thread.java:748)\nWrapped by: reactor.core.Exceptions$ErrorCallbackNotImplemented: org.springframework.transaction.CannotCreateTransactionException: Could not open R2DBC Connection for transaction; nested exception is java.net.UnknownHostException: failed to resolve 'myDB-master-dev-pvt.xyz**.com:3306,myDB-replica-dev-pvt.xyz**.com:3306' after 2 queries \n","caller_class_name":"reactor.util.Loggers$Slf4JLogger","caller_method_name":"error","caller_file_name":"Loggers.java","caller_line_number":314,"traceId":"","instance_activeProfiles":"dev","instance_port":"8080","instance_ip":"instance_ip_IS_UNDEFINED","instance_application_name":"employee-adjustment-service"}
Thanks
I have done the analysis, I am providing that here so that in future if any one want to check on mysql they must see this before planing to R2DBC. I went to the R2DBC team and after that, I found that driver which I am using that don't have multi-host . and Officaily they support on postgres and MSSQL and H2,
I am using below driver
<!-- https://mvnrepository.com/artifact/dev.miku/r2dbc-mysql -->
<dependency>
<groupId>dev.miku</groupId>
<artifactId>r2dbc-mysql</artifactId>
<version>0.8.2.RELEASE</version>
</dependency>
so this need to be fixed in this driver I have to open an issue there
https://github.com/mirromutth/r2dbc-mysql/issues/169 in order to fix it.
Thanks, Mark #mp911de from Spring R2DBC for clarification and support.
I`m able to invoke with multiple hosts comma seperated hosts
r2dbc.oracle.config.host1=a.b.com
r2dbc.oracle.config.host2=x.y.com
And My config class goes as below
#Value("${r2dbc.oracle.config.host1}")
private String host1;
#Value("${r2dbc.oracle.config.host2}")
private String host2;
#Bean()
#Qualifier("remoteabcConnectionFactory")
public ConnectionFactory remoteRemedyConnectionFactory() {
String hosts = host1 + "," + host2;
return ConnectionFactories.get(ConnectionFactoryOptions.builder()
.option(DRIVER, driver)
.option(HOST, host)
.option(HOST, hosts)
.option(PORT, Integer.valueOf(port))
.option(USER, user)
.option(PASSWORD, password)
.option(DATABASE, database)
.build());
}
You can also get comma separated hosts from one propertt param in
app.properties
Related
We are using REDIS cache , and using Spring-Redis module , we set the maxActiveConnections 10 in application configuration , but sometimes in my applications am seeing below errors
Exception occurred while querying cache : org.springframework.data.redis.RedisConnectionFailureException: Cannot get Jedis connection; nested exception is redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool
is it because of in the Redis server their are no more connections to give to my applications or any other reason , can anyone please suggest on this ?
Note : their are 15 applications which are using the same Redis server to store the data , i mean 15 applications need connections from this single redis server only , for now we set 10 as maxActiveConnections for each of the 15 applications
To check how many clients are connected to redis you can use redis-cli and type this command: redis> INFO more specifically info Clients command.
192.168.8.176:8023> info Clients
# Clients
connected_clients:1
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
Form Jedis source code, it seems that the exception happened for the following reason:
Exhausted cache: // The exception was caused by an exhausted pool
or // Otherwise, the exception was caused by the implemented activateObject() or ValidateObject()
Here is the code snippet of Jedis getResource method:
public T getResource() {
try {
return internalPool.borrowObject();
} catch (NoSuchElementException nse) {
if (null == nse.getCause()) { // The exception was caused by an exhausted pool
throw new JedisExhaustedPoolException(
"Could not get a resource since the pool is exhausted", nse);
}
// Otherwise, the exception was caused by the implemented activateObject() or ValidateObject()
throw new JedisException("Could not get a resource from the pool", nse);
} catch (Exception e) {
throw new JedisConnectionException("Could not get a resource from the pool", e);
}
}
I am trying to use HBase for building some real time API's. Hence my use case is to support ~10000 concurrent requests per second. I am trying to do some connection pooling so as to achieve multi thread access. I followed this documentation to create the connection: https://hbase.apache.org/1.1/apidocs/org/apache/hadoop/hbase/client/ConnectionFactory.html
But I keep getting this error when I make concurrent requests to my API:
WARN [http-nio-34000-exec-93-SendThread(d-3zjyk02.target.com:2181)]
19 Apr 2017 04:48:13:872 (ClientCnxn.java:1102) - Session 0x0 for
server d-3zjyk02.target.com/10.66.241.30:2181, unexpected error,
closing socket connection and attempting reconnect
java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:192)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:68)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:366)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
Here is how I am creating the connection:
// Connection to the cluster. A single connection shared by all application threads
private Connection connection = null;
public Connection getHBaseConnection() throws Exception {
if (connection == null) {
try {
Configuration configuration = HBaseConfiguration.create();
configuration.addResource("core-site.xml");
configuration.addResource("hbase-site.xml");
configuration.addResource("hdfs-site.xml");
connection = ConnectionFactory.createConnection(configuration);
} catch (Exception ex) {
LOG.error("Exception in creating the HBase connection object: " + ex.getMessage());
throw new Exception("Exception in creating the HBase connection: " + ex.getMessage());
}
}
return connection;
}
And here is how I use the get HBase connection method to some scan operations:
try {
connection = getHBaseConnection();
afterConnectionStartTime = System.currentTimeMillis();
LOG.info("[" + (System.currentTimeMillis() - startTime) + "]ms" + " ...TIME TAKEN to get the HBase connection object");
if (connection != null) {
table = connection.getTable(TableName.valueOf(TABLE_NAME));
Scan scan = new Scan(Bytes.toBytes(rowKeyStartDate), Bytes.toBytes(rowKeyEndDate));
scan.addColumn(COLUMN_FAMILY, ITEM);
}
This code works fine for any number of sequential requests, but when I do concurrent requests, I keep getting this error.
Some of the observations from my research on this issue:
1) This error is related to zookeeper closing the socket after certain number of requests (which I assume when it exceeds the max client connections (40) mentioned in my zoo.cfg file). But what I don't understand is why the concurrent requests are going to zookeeper in the first place. The first request should open the connection object and all the subsequent requests should use that pre existing connection to directly talk to region servers.
2) I am assuming this is the right way to do the connection pooling (at least as per the official Hbase doc). If no, whats the right way to do it?
3) I don't want to increase the max client connections in the zookeeper cfg file, thought it might be a temporary hack that can do my work.
Any help / suggestions is much appreciated.
Thanks!
1.JAVA_HOME is set to IBM JAVA SDK.
2.Unable to get oracle database connection. Where as tried running the same on machine having Oracle java set as JAVA_HOME
3.Placed ojdbc14.jar under AppServer/lib.
try {
connection = DriverManager.getConnection(
"jdbc:oracle:thin:#[server-ip]:[server-port]/[dbname]", "[uname]", "[pass]");
} 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!");
}
Is there any setting i need to do.Below is the error
Oracle JDBC Driver Registered! Connection Failed! Check output console
java.sql.SQLRecoverableException: IO Error: The Network Adapter could
not establish the connection
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:517)
at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:557)
at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:233)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:29)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:556)
at java.sql.DriverManager.getConnection(DriverManager.java:583)
at java.sql.DriverManager.getConnection(DriverManager.java:227)
at OracleJDBCExample.main(OracleJDBCExample.java:29) Caused by: oracle.net.ns.NetException: The Network Adapter could not
establish the connection
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:389)
at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:431)
at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:882)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:267)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1625)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:365)
... 7 more Caused by: java.net.SocketTimeoutException: connect timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:370)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:231)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:213)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:404)
at java.net.Socket.connect(Socket.java:643)
at oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:147)
at oracle.net.nt.ConnOption.connect(ConnOption.java:130)
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:367)
Thanks,
Kusuma
Here's a couple of things to check:
can you connect to port [server-port] on [server-ip] ? (try telnet, netcat or something similar)
does the listener accept connections? i.e. does sqlplus username/pw#[server-ip]:[server-port]/[dbname] work?
is the SID correct (dbname) ?
have you tried connecting with the service name instead of the SID:
jdbc:oracle:thin:#//<server-ip>:<server-port>/<dbname> ?
see also
Java JDBC - How to connect to Oracle using Service Name instead of SID
I have created a simple grails 3 application. I am trying to connect it to an Oracle database in the datasource configuration.
When I run
SELECT * FROM V$VERSION
in sql developer, the following data is returned back about my database.
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
my application.yml file looks like this:
dataSources:
dataSource:
pooled: true
dialect: org.hibernate.dialect.Oracle10gDialect
driverClassName: 'oracle.jdbc.OracleDriver'
username: 'superCool'
password: 'password'
url: 'jdbc:oracle:thin:#127.0.0.1:1521:coolio'
dbCreate: ''
my build.gradle file contains these lines for hibernate and oracle dependencies.
dependencies {
(...)
compile "org.grails.plugins:hibernate:4.3.10.5"
(...)
compile "org.hibernate:hibernate-ehcache"
compile("com.oracle:ojdbc7:12.1.0.2")
}
My service file looks as follows:
class DatabaseService {
DataSource dataSource
public void testMyDb(User user) {
try {
registerUser(new Sql(dataSource), user)
} catch (SQLException e) {
LOGGER.error("unable to register the user", e)
throw e
}
}
public void registerUser(Sql sql, User user) {
sql.call("{call isertUser(?)}", [user.name])
}
If I remove the
compile "org.grails.plugins:hibernate:4.3.10.5"
from the build.gradle, I can run my integration tests and the database is successfully reached. If I keep it there, I get the following error:
ERROR DatabaseService - unable to register the user
java.sql.SQLRecoverableException: Closed Connection
at oracle.jdbc.driver.PhysicalConnection.getAutoCommit(PhysicalConnection.java:2254) ~[ojdbc7-12.1.0.2.jar:12.1.0.2.0]
UPDATE 1:
I updated my build.gradle file to reference
compile("com.oracle:ojdbc6:11.2.0.2")
as opposed to
compile("com.oracle:ojdbc7:12.1.0.2")
and the generated error now refers to the setter:
ERROR DatabaseService - unable to register the user
java.sql.SQLRecoverableException: Closed Connection
at oracle.jdbc.driver.PhysicalConnection.setAutoCommit(PhysicalConnection.java:2254) ~[ojdbc7-12.1.0.2.jar:12.1.0.2.0]
UPDATE 2:
I caught the SQLException and got the sql error code from it. The code returned back: 08003. According to https://docs.oracle.com/cd/E15817_01/appdev.111/b31228/appd.htm ,
08003 - connection does not exist
So at this point, I set the pooled flag to false in the datasource, and everything worked just fine. So the problem here is narrowed down to that. The plugin is not reacting well to the pooled properties.
I have issued the following sql commands to figure out the size of my pool:
SELECT name, value FROM v$parameter WHERE name = 'sessions';
that returns back 1524.
I have also issued the sql command to see the current allocated amount:
SELECT COUNT(*) FROM v$session;
which returns back 58.
I suppose the question now is, what is causing the pooled property to go crazy.
The solution to this was to disable my pooling. I cannot tell if its a bug, r why it fails, but it does. Thankfully for me, I used jndi lookup for my dataSources, so replacing that made the spark.
dataSources:
dataSource:
pooled: false
dialect: org.hibernate.dialect.Oracle10gDialect
driverClassName: 'oracle.jdbc.OracleDriver'
username: 'superCool'
password: 'password'
url: 'jdbc:oracle:thin:#127.0.0.1:1521:coolio'
dbCreate: ''
I'm building a monitoring application as a servlet running on my websphere 7 ND deployment manager. The tool uses JMX to query the deployment manager for various data. Global Security is enabled on the dmgr.
I'm having problems getting this to work however. My first attempt was to use the websphere client code:
String sslProps = "file:" + base +"/properties/ssl.client.props";
System.setProperty("com.ibm.SSL.ConfigURL", sslProps);
String soapProps = "file:" + base +"/properties/soap.client.props";
System.setProperty("com.ibm.SOAP.ConfigURL", pp);
Properties connectProps = new Properties();
connectProps.setProperty(AdminClient.CONNECTOR_TYPE, AdminClient.CONNECTOR_TYPE_SOAP);
connectProps.setProperty(AdminClient.CONNECTOR_HOST, dmgrHost);
connectProps.setProperty(AdminClient.CONNECTOR_PORT, soapPort);
connectProps.setProperty(AdminClient.CONNECTOR_SECURITY_ENABLED, "true");
AdminClient adminClient = AdminClientFactory.createAdminClient(connectProps) ;
This results in the following exception:
Caused by: com.ibm.websphere.management.exception.ConnectorNotAvailableException: ADMC0016E: The system cannot create a SOAP connector to connect to host ssunlab10.apaceng.net at port 13903.
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.getUrl(SOAPConnectorClient.java:1306)
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.access$300(SOAPConnectorClient.java:128)
at com.ibm.ws.management.connector.soap.SOAPConnectorClient$4.run(SOAPConnectorClient.java:370)
at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.reconnect(SOAPConnectorClient.java:363)
... 22 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:519)
at java.net.Socket.connect(Socket.java:469)
at java.net.Socket.<init>(Socket.java:366)
at java.net.Socket.<init>(Socket.java:209)
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.getUrl(SOAPConnectorClient.java:1286)
... 26 more
So, I then tried to do it via RMI, but adding in the sas.client.properties to the environment, and setting the connectort type in the code to CONNECTOR_TYPE_RMI. Now though I got a NameNotFoundException out of CORBA:
Caused by: javax.naming.NameNotFoundException: Context: , name: JMXConnector: First component in name JMXConnector not found. [Root exception is org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0]
To see if it was an IBM issue, I tried using the standard JMX connector as well with the same result (substitute AdminClient for JMXConnector in the above error)
JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/JMXConnector");
Hashtable h = new Hashtable();
String providerUrl = "corbaloc:iiop:" + dmgrHost + ":" + rmiPort + "/WsnAdminNameService";
h.put(Context.PROVIDER_URL, providerUrl);
// Specify the user ID and password for the server if security is enabled on server.
String[] credentials = new String[] { "***", "***" };
h.put("jmx.remote.credentials", credentials);
// Establish the JMX connection.
JMXConnector jmxc = JMXConnectorFactory.connect(url, h);
// Get the MBean server connection instance.
mbsc = jmxc.getMBeanServerConnection();
At this point, in desperation I wrote a wsadmin sccript to run both the RMI and SOAP methods. To my amazement, this works fine. So my question is, why does the code not work in a servlet installed on the dmgr ?
regards,
Trevor
For the SOAP error, the ConnectException looks like the wrong SOAP host/port was used for the dmgr. I would double-check the server logs for the SOAP port. For the RMI error (NameNotFoundException), it looks like you're trying to use JMXConnectorFactory, which isn't supported by WAS.
If your application is installed on the dmgr, it's probably easiest to just use AdminServiceFactory.getAdminService to get an in-process reference to the AdminService rather than trying to open a new connection to the same process:
http://publib.boulder.ibm.com/infocenter/wasinfo/fep/topic/com.ibm.websphere.javadoc.doc/web/apidocs/com/ibm/websphere/management/AdminServiceFactory.html