WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@3531a5ff -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception:
java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:869) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:865) at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1746) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1226) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2188) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2219) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2014) at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:776) at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) at sun.reflect.GeneratedConstructorAccessor36.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:386) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330) at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Apr 19, 2020 11:14:30 PM com.mchange.v2.resourcepool.BasicResourcePool WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@456d6127 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:869) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:865) at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1746) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1226) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2188) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2219) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2014) at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:776) at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) at sun.reflect.GeneratedConstructorAccessor36.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:386) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330) at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Apr 19, 2020 11:14:30 PM com.mchange.v2.resourcepool.BasicResourcePool WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@661ca68e -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:869) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:865) at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1746) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1226) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2188) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2219) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2014) at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:776) at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) at sun.reflect.GeneratedConstructorAccessor36.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:386) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330) at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Apr 19, 2020 11:14:30 PM com.mchange.v2.resourcepool.BasicResourcePool WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@7439cf4b is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests. Apr 19, 2020 11:14:30 PM com.mchange.v2.resourcepool.BasicResourcePool WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@7439cf4b is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests. Apr 19, 2020 11:14:30 PM com.mchange.v2.resourcepool.BasicResourcePool WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@7439cf4b is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests. Apr 19, 2020 11:14:30 PM org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator initiateService WARN: HHH000342: Could not obtain connection to query metadata : Connections could not be acquired from the underlying database! Apr 19, 2020 11:14:30 PM com.mchange.v2.resourcepool.BasicResourcePool WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@3aea5402 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:869) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:865) at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1746) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1226) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2188) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2219) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2014) at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:776) at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) at sun.reflect.GeneratedConstructorAccessor36.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:386) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330) at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Apr 19, 2020 11:14:30 PM com.mchange.v2.resourcepool.BasicResourcePool WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@7439cf4b is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests. Apr 19, 2020 11:14:30 PM com.mchange.v2.resourcepool.BasicResourcePool WARNING: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@4f3eb158 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:869) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:865) at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1746) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1226) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2188) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2219) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2014) at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:776) at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) at sun.reflect.GeneratedConstructorAccessor36.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:386) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330) at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Apr 19, 2020 11:14:30 PM com.mchange.v2.resourcepool.BasicResourcePool WARNING: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@7439cf4b is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests. Apr 19, 2020 11:14:30 PM org.hibernate.dialect.Dialect INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
And this is my code
@Autowired
private Environment env;
private Logger logger = Logger.getLogger(getClass().getName());
// define a bean for ViewResolver
@Bean
public DataSource myDataSource() {
// create connection pool
ComboPooledDataSource myDataSource = new ComboPooledDataSource();
// set the jdbc driver
try {
myDataSource.setDriverClass("com.mysql.jdbc.Driver");
}
catch (PropertyVetoException exc) {
throw new RuntimeException(exc);
}
// for sanity's sake, let's log url and user ... just to make sure we are reading the data
logger.info("jdbc.url=" + env.getProperty("jdbc.url"));
logger.info("jdbc.user=" + env.getProperty("jdbc.user"));
// set database connection props
myDataSource.setJdbcUrl(env.getProperty("jdbc.url"));
myDataSource.setUser(env.getProperty("jdbc.user"));
myDataSource.setPassword(env.getProperty("jdbc.password"));
// set connection pool props
myDataSource.setInitialPoolSize(getIntProperty("connection.pool.initialPoolSize"));
myDataSource.setMinPoolSize(getIntProperty("connection.pool.minPoolSize"));
myDataSource.setMaxPoolSize(getIntProperty("connection.pool.maxPoolSize"));
myDataSource.setMaxIdleTime(getIntProperty("connection.pool.maxIdleTime"));
return myDataSource;
}
private Properties getHibernateProperties() {
// set hibernate properties
Properties props = new Properties();
props.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
props.setProperty("hibernate.show_sql", env.getProperty("hibernate.show_sql"));
return props;
}
// need a helper method
// read environment property and convert to int
private int getIntProperty(String propName) {
String propVal = env.getProperty(propName);
// now convert to int
int intPropVal = Integer.parseInt(propVal);
return intPropVal;
}
@Bean
public LocalSessionFactoryBean sessionFactory(){
// create session factories
LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
// set the properties
sessionFactory.setDataSource(myDataSource());
sessionFactory.setPackagesToScan(env.getProperty("hibernate.packagesToScan"));
sessionFactory.setHibernateProperties(getHibernateProperties());
return sessionFactory;
}
@Bean
@Autowired
public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
// setup transaction manager based on session factory
HibernateTransactionManager txManager = new HibernateTransactionManager();
txManager.setSessionFactory(sessionFactory);
return txManager;
}
}
How can i fix this ?
