Caused by: java.sql.SQLException: Failed to start database 'D:\nacos\nacos\data\derby-data' with class loader org.springframework.boot.loader.LaunchedURLClassLoader@5e8c92f4, see the next exception for details.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.bootDatabase(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.jdbc.InternalDriver$1.run(Unknown Source)
at org.apache.derby.jdbc.InternalDriver$1.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
at org.apache.derby.jdbc.InternalDriver.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver$LoginCallable.call(Unknown Source)
at org.apache.derby.jdbc.InternalDriver$LoginCallable.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: org.apache.derby.iapi.error.StandardException: Failed to start database 'D:\nacos\nacos\data\derby-data' with class loader org.springframework.boot.loader.LaunchedURLClassLoader@5e8c92f4, see the next exception for details.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(Unknown Source)
... 15 common frames omitted
Caused by: java.lang.NullPointerException: Cannot invoke "org.apache.derby.impl.store.raw.data.BasePage.preDirty()" because "<local3>" is null
at org.apache.derby.impl.store.raw.data.LogicalPageOperation.generateUndo(Unknown Source)
at org.apache.derby.impl.store.raw.data.InsertOperation.generateUndo(Unknown Source)
at org.apache.derby.impl.store.raw.log.FileLogger.undo(Unknown Source)
at org.apache.derby.impl.store.raw.xact.Xact.abort(Unknown Source)
at org.apache.derby.impl.store.raw.xact.XactFactory.rollbackAllTransactions(Unknown Source)
at org.apache.derby.impl.store.raw.log.LogToFile.recover(Unknown Source)
at org.apache.derby.impl.store.raw.RawStore.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(Unknown Source)
at org.apache.derby.impl.services.monitor.FileMonitor.startModule(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Unknown Source)
at org.apache.derby.impl.store.access.RAMAccessManager$5.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
at org.apache.derby.impl.store.access.RAMAccessManager.bootServiceModule(Unknown Source)
at org.apache.derby.impl.store.access.RAMAccessManager.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.startModule(Unknown Source)
at org.apache.derby.impl.services.monitor.FileMonitor.startModule(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.bootServiceModule(Unknown Source)
at org.apache.derby.impl.db.BasicDatabase$5.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
at org.apache.derby.impl.db.BasicDatabase.bootServiceModule(Unknown Source)
at org.apache.derby.impl.db.BasicDatabase.bootStore(Unknown Source)
at org.apache.derby.impl.db.BasicDatabase.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.boot(Unknown Source)
at org.apache.derby.impl.services.monitor.TopService.bootModule(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.bootService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.startProviderService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.findProviderAndStartService(Unknown Source)
at org.apache.derby.impl.services.monitor.BaseMonitor.startPersistentService(Unknown Source)
at org.apache.derby.iapi.services.monitor.Monitor.startPersistentService(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection$4.run(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
at org.apache.derby.impl.jdbc.EmbedConnection.startPersistentService(Unknown Source)
... 12 common frames omitted解决方案
直接删：
D:\nacos\nacos\data\不是只删除derby-data文件，而是data整个文件
然后重新启动 Nacos。