1）如Leonard Xu老师所说，目前JDBC connector还不支持oracle
2）从报错看，你这还都没有走到那一步就报错了，可以检查一下这些：
a. JDBC connector的使用方式参考[1]，比如'connector' = 'jdbc'，而不是'connector.type' =
'jdbc'，这个是老的使用方式
b. JDBC
connector的jar需要显式添加相关依赖，可以如何在PyFlink中添加jar依赖，可以看一下[2]。其中JDBC需要的的jar，可以参考[1]
[1]
https://ci.apache.org/projects/flink/flink-docs-release-1.12/dev/table/connectors/jdbc.html
<https://ci.apache.org/projects/flink/flink-docs-release-1.12/dev/table/connectors/jdbc.html>
[2]
https://ci.apache.org/projects/flink/flink-docs-release-1.12/dev/python/table-api-users-guide/python_table_api_connectors.html#download-connector-and-format-jars
> 在 2020年12月17日，上午10:06，肖越 <18242988...@163.com> 写道：
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> 谢谢您的帮助，所以没有办法通过定义connector的方式获取连接是么？ 有没有其他办法呢？
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> 在 2020-12-17 09:55:08，"Leonard Xu" <xbjt...@gmail.com> 写道：
>> 目前 JDBC connector 只支持 MySQL, Pg和Derby(一般测试用)这几种dialect， Oracle还不支持。
>>
>> 祝好，
>> Leonard
>>
>>> 在 2020年12月17日，09:47，肖越 <18242988...@163.com> 写道：
>>>
>>> pyflink小白，测试pyflink1.12功能，想通过定义connector从oracle数据库中获取数据
>>> 通过如下方式定义：
>>> env = StreamExecutionEnvironment.get_execution_environment()
>>> env.set_parallelism(1)
>>> env = StreamTableEnvironment \
>>> .create(env, environment_settings=EnvironmentSettings
>>> .new_instance()
>>> .use_blink_planner().build())
>>> source_ddl1 = """
>>> CREATE TABLE source_table (id BIGINT,pf_id VARCHAR,\
>>> tree_id VARCHAR,node_id VARCHAR,biz_date DATE,\
>>> ccy_type VARCHAR,cur_id_d VARCHAR,tldrate DOUBLE,\
>>> is_valid INT,time_mark TIMESTAMP) WITH (
>>> 'connector.type' = 'jdbc',
>>> 'connector.url' = 'jdbc:oracle:thin:@ip:dbnamel',
>>> 'connector.table' = 'ts_pf_ac_yldrate',
>>> 'connector.driver' = 'oracle.jdbc.driver.OracleDriver',
>>> 'connector.username' = 'xxx',
>>> 'connector.password' = 'xxx')
>>> """
>>> sql = "select pf_id,biz_date from source_table where biz_date='20160701' "
>>> env.sql_update(source_ddl1)
>>> table = env.sql_query(sql)
>>> env.execute("flink_test")
>>> 报错信息：
>>> raise java_exception
>>> pyflink.util.exceptions.TableException: findAndCreateTableSource failed.
>>> at
>>> org.apache.flink.table.factories.TableFactoryUtil.findAndCreateTableSource(TableFactoryUtil.java:49)
>>> at
>>> org.apache.flink.table.planner.plan.schema.LegacyCatalogSourceTable.findAndCreateLegacyTableSource(LegacyCatalogSourceTable.scala:193)
>>> at
>>> org.apache.flink.table.planner.plan.schema.LegacyCatalogSourceTable.toRel(LegacyCatalogSourceTable.scala:94)
>>> at
>>> org.apache.calcite.sql2rel.SqlToRelConverter.toRel(SqlToRelConverter.java:3585)
>>> at
>>> org.apache.calcite.sql2rel.SqlToRelConverter.convertIdentifier(SqlToRelConverter.java:2507)
>>> at
>>> org.apache.calcite.sql2rel.SqlToRelConverter.convertFrom(SqlToRelConverter.java:2144)
>>> at
>>> org.apache.calcite.sql2rel.SqlToRelConverter.convertFrom(SqlToRelConverter.java:2093)
>>> at
>>> org.apache.calcite.sql2rel.SqlToRelConverter.convertFrom(SqlToRelConverter.java:2050)
>>> at
>>> org.apache.calcite.sql2rel.SqlToRelConverter.convertSelectImpl(SqlToRelConverter.java:663)
>>> at
>>> org.apache.calcite.sql2rel.SqlToRelConverter.convertSelect(SqlToRelConverter.java:644)
>>> at
>>> org.apache.calcite.sql2rel.SqlToRelConverter.convertQueryRecursive(SqlToRelConverter.java:3438)
>>> at
>>> org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:570)
>>> at
>>> org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$rel(FlinkPlannerImpl.scala:165)
>>> at
>>> org.apache.flink.table.planner.calcite.FlinkPlannerImpl.rel(FlinkPlannerImpl.scala:157)
>>> at
>>> org.apache.flink.table.planner.operations.SqlToOperationConverter.toQueryOperation(SqlToOperationConverter.java:823)
>>> at
>>> org.apache.flink.table.planner.operations.SqlToOperationConverter.convertSqlQuery(SqlToOperationConverter.java:795)
>>> at
>>> org.apache.flink.table.planner.operations.SqlToOperationConverter.convert(SqlToOperationConverter.java:250)
>>> at
>>> org.apache.flink.table.planner.delegation.ParserImpl.parse(ParserImpl.java:78)
>>> at
>>> org.apache.flink.table.api.internal.TableEnvironmentImpl.sqlQuery(TableEnvironmentImpl.java:639)
>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> at
>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>>> at
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>> at java.lang.reflect.Method.invoke(Method.java:498)
>>> at
>>> org.apache.flink.api.python.shaded.py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
>>> at
>>> org.apache.flink.api.python.shaded.py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
>>> at org.apache.flink.api.python.shaded.py4j.Gateway.invoke(Gateway.java:282)
>>> at
>>> org.apache.flink.api.python.shaded.py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
>>> at
>>> org.apache.flink.api.python.shaded.py4j.commands.CallCommand.execute(CallCommand.java:79)
>>> at
>>> org.apache.flink.api.python.shaded.py4j.GatewayConnection.run(GatewayConnection.java:238)
>>> at java.lang.Thread.run(Thread.java:748)
