OceanBase中，看看这个串有问题么 还报连接不上？

"OceanBase中，看看这个串有问题么 还报连接不上，集群obdemo 租户 sw_tenant，2024-03-11 11:07:55.980 [job-0] INFO OriginalConfPretreatmentUtil - Available jdbcUrl:jdbc:mysql://172.20.16.61:3306/db11?useUnicode=true&characterEncoding=utf8&useSSL=false&yearIsDateType=false&zeroDateTimeBehavior=convertToNull&tinyInt1isBit=false&rewriteBatchedStatements=true.
2024-03-11 11:07:55.982 [job-0] WARN OriginalConfPretreatmentUtil - 您的配置文件中的列配置存在一定的风险. 因为您未配置读取数据库表的列，当您的表字段个数、类型有变动时，可能影响任务正确性甚至会运行出错。请检查您的配置并作出修改.
2024-03-11 11:07:56.038 [job-0] INFO DBUtil - this is ob1_0 jdbc url.
2024-03-11 11:07:56.038 [job-0] INFO DBUtil - this is ob1_0 jdbc url. user=obdemo:sw_tenant:datax :url=jdbc:oceanbase://172.20.16.16:2881/db11?useLocalSessionState=true&allowBatch=true&allowMultiQueries=true&rewriteBatchedStatements=true
2024-03-11 11:08:11.388 [job-0] ERROR RetryUtil - Exception when calling callable, 异常Msg:Code:[DBUtilErrorCode-10], Description:[连接数据库失败. 请检查您的 账号、密码、数据库名称、IP、Port或者向 DBA 寻求帮助(注意网络环境).]. - 具体错误信息为：com.alipay.oceanbase.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
com.alibaba.datax.common.exception.DataXException: Code:[DBUtilErrorCode-10], Description:[连接数据库失败. 请检查您的 账号、密码、数据库名称、IP、Port或者向 DBA 寻求帮助(注意网络环境).]. - 具体错误信息为：com.alipay.oceanbase.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure"