使用Oracle数组的Spring StoredProcedure:ORA-01000:超出了最大打开游标数

Question

OracleTypes.ARRAY多次调用带有输入参数的Oracle存储过程时,会出现以下错误: -

org.springframework.jdbc.UncategorizedSQLException: CallableStatementCallback; uncategorized SQLException for SQL [{call EMP_SCHEMA.GET_EMPLOYEE_LIST(?, ?)}]; SQL state [72000]; error code [1000]; ORA-01000: maximum open cursors exceeded; nested exception is java.sql.SQLException: ORA-01000: maximum open cursors exceeded
            at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:84) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
            at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]

JDBC模板配置是: -

    <bean id="commonsDbcpNativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.CommonsDbcpNativeJdbcExtractor" />
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
    <constructor-arg>
        <ref bean="dataSource" />
    </constructor-arg>
    <property name="nativeJdbcExtractor" ref="commonsDbcpNativeJdbcExtractor" />
</bean>

存储过程类: -

public class GetEmployees extends StoredProcedure {
  public GetEmployees(JdbcTemplate jdbcTemplate) {
    super(jdbcTemplate, "EMP_SCHEMA.GET_EMPLOYEE_LIST");
    declareParameter(new SqlParameter("p_emp_id_list", OracleTypes.ARRAY, "TBL_EMP_ID"));
    declareParameter(new SqlOutParameter(CURSOR, OracleTypes.CURSOR, new EmployeeDataRowMapper()));
    compile();
  }

  public List<Employee> ofIds(Set<EmployeeId> employeeIds) {
    Map<String, OracleArraySqlTypeValue> params = new HashMap<>();
    params.put("p_emp_id_list", new OracleArraySqlTypeValue(employeeIds));
    final Map<String, Object> result = execute(params);

    return (List<Employee>) result.get(CURSOR);
  }
}

Oracle SqlTypeValue: -

public class OracleArraySqlTypeValue extends AbstractSqlTypeValue {
  private final String[][] employeeIds;

  public OracleArraySqlTypeValue(String[][] employeeIds) {
    this.employeeIds = employeeIds;
  }

  @Override
  protected Object createTypeValue(Connection connection, int sqlType, String typeName) throws SQLException {
    ArrayDescriptor arrayDescriptor = new ArrayDescriptor(typeName, connection);
    return new ARRAY(arrayDescriptor, connection, employeeIds);
  }
}

而不是CommonsDbcpNativeJdbcExtractor尝试OracleJdbc4NativeJdbcExtractor过.但仍然存在错误.

基本上堆包含许多未闭合的Statement对象.知道为什么春天没有关闭资源？

环境: - Java 1.8,Spring 4.1.6,Tomcat 7.

Answer 1

在上述情况下，问题是由于 oracle 数组类型的所有权错误造成的。实际上，用户定义的数组类型TBL_EMP_ID属于某个架构，而不是声明存储过程的架构。

通过将数组类型声明移动到GET_EMPLOYEE_LIST声明存储过程的同一模式解决了该问题。