问题描述
我尝试通过JBDC将NiFi连接到Oracle，并出现以下错误：
2020-08-13 12:48:48,568 INFO [pool-10-thread-1] o.a.n.c.r.WriteAheadFlowFileRepository Initiating checkpoint of FlowFile Repository
2020-08-13 12:48:48,568 INFO [pool-10-thread-1] o.a.n.c.r.WriteAheadFlowFileRepository Successfully checkpointed FlowFile Repository with 0 records in 0 milliseconds
2020-08-13 12:48:59,438 ERROR [Timer-Driven Process Thread-10] o.a.n.c.s.StandardControllerServiceNode DBCPConnectionPool[id=e252cec4-0173-1000-c06c-964690e5251c] Failed to invoke @OnEnabled method due to org.apache.nifi.reporting.InitializationException: Can't load Database Driver: {}
org.apache.nifi.reporting.InitializationException: Can't load Database Driver
at org.apache.nifi.dbcp.DBCPConnectionPool.getDriverClassLoader(DBCPConnectionPool.java:427)
at org.apache.nifi.dbcp.DBCPConnectionPool.onConfigured(DBCPConnectionPool.java:366)
at sun.reflect.GeneratedMethodAccessor638.invoke(UnkNown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.nifi.util.ReflectionUtils.invokeMethodsWithAnnotations(ReflectionUtils.java:142)
at org.apache.nifi.util.ReflectionUtils.invokeMethodsWithAnnotations(ReflectionUtils.java:130)
at org.apache.nifi.util.ReflectionUtils.invokeMethodsWithAnnotations(ReflectionUtils.java:75)
at org.apache.nifi.util.ReflectionUtils.invokeMethodsWithAnnotation(ReflectionUtils.java:52)
at org.apache.nifi.controller.service.StandardControllerServiceNode$2.run(StandardControllerServiceNode.java:436)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.classNotFoundException: oracle.jbdc.driver.OrcaleDriver
at java.net.urlclassloader.findClass(urlclassloader.java:382)
at java.lang.classLoader.loadClass(ClassLoader.java:424)
at java.lang.classLoader.loadClass(ClassLoader.java:357)
at java.lang.class.forName0(Native Method)
at java.lang.class.forName(Class.java:348)
at org.apache.nifi.dbcp.DBCPConnectionPool.getDriverClassLoader(DBCPConnectionPool.java:416)
... 16 common frames omitted
2020-08-13 12:48:59,438 ERROR [Timer-Driven Process Thread-10] o.a.n.c.s.StandardControllerServiceNode Failed to invoke @OnEnabled method of DBCPConnectionPool[id=e252cec4-0173-1000-c06c-964690e5251c] due to org.apache.nifi.reporting.InitializationException: Can't load Database Driver
我将ojdbc7.jar放在/ lib / nifi-serve / lib中，然后重新启动nifi服务。
为什么NiFi无法加载驱动程序？
解决方法
这是一个错字：不是50，而是oracle.jdbc.driver.OrcaleDriver