数据库连接池配置：

数据库链接在运行时报错：

Caused by: java.sql.SQLRecoverableException: 关闭的语句

at oracle.jdbc.driver.OracleClosedStatement.exitImplicitCacheToActive(OracleClosedStatement.java:4667)

at oracle.jdbc.driver.OraclePreparedStatementWrapper.exitImplicitCacheToActive(OraclePreparedStatementWrapper.java:1607)

at com.alibaba.druid.util.OracleUtils.exitImplicitCacheToActive(OracleUtils.java:79)

at com.alibaba.druid.pool.PreparedStatementPool.get(PreparedStatementPool.java:66)

at com.alibaba.druid.pool.DruidPooledConnection.prepareStatement(DruidPooledConnection.java:326)

at com.ibatis.sqlmap.engine.execution.SqlExecutor.prepareStatement(SqlExecutor.java:497)

at com.ibatis.sqlmap.engine.execution.SqlExecutor.executeUpdate(SqlExecutor.java:75)

at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.sqlExecuteUpdate(MappedStatement.java:216)

at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.executeUpdate(MappedStatement.java:94)

请问有可能是什么原因导致的这个问题？？在线等