Flink cdc oracle 同步 Oracle 数据库，程序启动后无反应

Flink cdc oracle 2.11
Flink 1.13.6
``` SourceFunction sourceFunction = OracleSource.builder()
.hostname("xx.x.xx.x")
.port(1531)
.database("TEST") // monitor XE database
.schemaList("APPS") // monitor inventory schema
.tableList("APPS.student") // monitor products table
.username("apps")
.password("apps")
.deserializer(new JsonDebeziumDeserializationSchema()) // converts SourceRecord to JSON String
.startupOptions(StartupOptions.latest())
.debeziumProperties(properties)
.build();

    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

    env.enableCheckpointing(3000);

    // set the source parallelism to 4
    env
            .addSource(sourceFunction)
            .print().setParallelism(1); // use parallelism 1 for sink to keep message ordering

    env.execute("Print Oracle Snapshot + RedoLog");

```
本地测试idea启动后，下图

不知道是什么原因？