listener could not find available handler for requested type of server

http://www.ispirer.com/wiki/sqlways/troubleshooting-guide/oracle/import/tns_listener

orcal默认参数“PROCESSES ” 指定orcale xe Server 为40个

解决方法，增加"PROCESSES "为100,200 或更多，步骤如下

在系统中

1.set ORACLE_SID=XE

在SQLPlus中：

SQL> alter system set processes=400 scope=spfile;

SQL> shutdown immediate;

SQL> startup;

Cause

As the default the parameter called PROCESSES is specified as 40 or something like that in the Oracle XE Server. This parameter controls the number of processes running simultaneously in one instance on Oracle. Usually it is not enough for
large databases with large amount of objects and data.

Solution

Please increase PROCESSES to 100, 200 or even higher.

To increase it, please perform the following steps:

In the System:

set ORACLE_SID=XE

In the SQLPlus:

SQL> alter system set processes=400 scope=spfile;

SQL> shutdown immediate;

SQL> startup;

] 2012-03-03 08:11:20:ERROR pool-1-thread-7 com.xiu.search.good.utils.CommonUtils - 商品折扣计算结果异常，商品id为84020,市场价为：0.02,销售价格为10000

[java] at org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:1230)

[java] at org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:134)

[java] at org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:205)

[java] at org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:127)

[java] at org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:48)

[java] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:897)

[java] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:919)

[java] at java.lang.Thread.run(Thread.java:736)

[java] Caused by: java.sql.SQLException: Listener refused the connection with the following error:

[java] ORA-12520, TNS:listener could not find available handler for requested type of server

[java] The Connection descriptor used by the client was:

[java] (DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = ract-scan.xiu.com)(PORT = 1521)))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = swcsdb1.xiu.com)))

[java]

[java] at java.lang.Throwable.<init>(Throwable.java:67)

[java] at java.sql.SQLException.<init>(SQLException.java:101)

[java] at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)

[java] at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:229)

[java] at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)

[java] at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:441)

[java] at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)

[java] at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)

[java] at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)

[java] at oracle.jdbc.pool.OracleDataSource.getPhysicalConnection(OracleDataSource.java:297)

[java] at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:221)

[java] at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:165)

[java] at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:113)

[java] at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79)

[java] ... 16 more