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【DM版本】:8.1.3.140
【操作系统】：win10
【CPU】:
【问题描述】*：springcloud项目原先使用r2dbc驱动连接mysql，现在需要强制切换为r2dbc驱动连接达梦数据库，已经可以正常生成库表，但是报错Please provide a Dialect，如何解决，报错信息如下
2025-07-14 16:21:05.674 WARN 144 --- [ main] onfigReactiveWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'r2dbcDatabaseClient' defined in class path resource [org/springframework/boot/autoconfigure/data/r2dbc/R2dbcDataAutoConfiguration.class]: Unsatisfied dependency expressed through method 'r2dbcDatabaseClient' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reactiveDataAccessStrategy' defined in class path resource [org/springframework/boot/autoconfigure/data/r2dbc/R2dbcDataAutoConfiguration.class]: Unsatisfied dependency expressed through method 'reactiveDataAccessStrategy' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'r2dbcMappingContext' defined in class path resource [org/springframework/boot/autoconfigure/data/r2dbc/R2dbcDataAutoConfiguration.class]: Unsatisfied dependency expressed through method 'r2dbcMappingContext' parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'r2dbcCustomConversions' defined in class path resource [org/springframework/boot/autoconfigure/data/r2dbc/R2dbcDataAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.r2dbc.convert.R2dbcCustomConversions]: Factory method 'r2dbcCustomConversions' threw exception; nested exception is org.springframework.data.r2dbc.dialect.DialectResolver$NoDialectException: Cannot determine a dialect for Oracle Database using ConnectionPool[Oracle Database]. Please provide a Dialect.
2025-07-14 16:21:05.756 WARN 144 --- [ctor-http-nio-2] r.netty.http.client.HttpClientConnect : [id: 0x0a27103a, L:0.0.0.0/0.0.0.0:51916 ! R:/10.1.200.12:9200] The connection observed an error

reactor.netty.http.client.PrematureCloseException: Connection prematurely closed BEFORE response

2025-07-14 16:21:07.882 WARN 144 --- [oundedElastic-1] io.netty.channel.AbstractChannel : Force-closing a channel whose registration task was not accepted by an event loop: [id: 0xcdcf3054]

java.util.concurrent.RejectedExecutionException: event executor terminated
at io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:923)
at io.netty.util.concurrent.SingleThreadEventExecutor.offerTask(SingleThreadEventExecutor.java:350)
at io.netty.util.concurrent.SingleThreadEventExecutor.addTask(SingleThreadEventExecutor.java:343)
at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:825)
at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:815)
at io.netty.channel.AbstractChannel$AbstractUnsafe.register(AbstractChannel.java:483)
at io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:87)
at io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:81)
at reactor.netty.resources.ColocatedEventLoopGroup.register(ColocatedEventLoopGroup.java:70)
at io.netty.bootstrap.AbstractBootstrap.initAndRegister(AbstractBootstrap.java:323)
at io.netty.bootstrap.Bootstrap.doResolveAndConnect(Bootstrap.java:155)
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:116)
at reactor.netty.resources.PooledConnectionProvider$PooledConnectionAllocator.lambda$connectChannel$0(PooledConnectionProvider.java:244)
at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:57)
at reactor.core.publisher.Mono.subscribe(Mono.java:4252)
at reactor.core.publisher.Mono.subscribeWith(Mono.java:4363)
at reactor.core.publisher.Mono.subscribe(Mono.java:4223)
at reactor.core.publisher.Mono.subscribe(Mono.java:4159)
at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool.drainLoop(SimpleDequePool.java:406)
at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool.pendingOffer(SimpleDequePool.java:557)
at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool.doAcquire(SimpleDequePool.java:267)
at reactor.netty.internal.shaded.reactor.pool.AbstractPool$Borrower.request(AbstractPool.java:400)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:496)
at reactor.netty.resources.PooledConnectionProvider$DisposableAcquire.onSubscribe(PooledConnectionProvider.java:533)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onSubscribe(FluxOnAssembly.java:480)
at reactor.netty.internal.shaded.reactor.pool.SimpleDequePool$QueueBorrowerMono.subscribe(SimpleDequePool.java:675)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64)
at reactor.netty.resources.PooledConnectionProvider.disposableAcquire(PooledConnectionProvider.java:219)
at reactor.netty.resources.PooledConnectionProvider.lambda$acquire$3(PooledConnectionProvider.java:183)
at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:57)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64)
at reactor.netty.http.client.HttpClientConnect$MonoHttpConnect.lambda$subscribe$0(HttpClientConnect.java:326)
at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:57)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64)
at reactor.core.publisher.FluxRetryWhen.subscribe(FluxRetryWhen.java:80)
at reactor.core.publisher.MonoRetryWhen.subscribeOrReturn(MonoRetryWhen.java:46)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:57)
at reactor.netty.http.client.HttpClientConnect$MonoHttpConnect.subscribe(HttpClientConnect.java:329)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:386)
at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:114)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:386)
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2394)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:496)
at reactor.core.publisher.FluxMap$MapSubscriber.request(FluxMap.java:155)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.request(FluxOnAssembly.java:496)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:103)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onSubscribe(FluxOnAssembly.java:480)
at reactor.core.publisher.FluxMap$MapSubscriber.onSubscribe(FluxMap.java:86)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onSubscribe(FluxOnAssembly.java:480)
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:55)
at reactor.core.publisher.Flux.subscribe(Flux.java:8389)
at reactor.core.publisher.MonoProcessor.add(MonoProcessor.java:457)
at reactor.core.publisher.MonoProcessor.subscribe(MonoProcessor.java:370)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64)
at reactor.core.publisher.FluxRetryWhen.subscribe(FluxRetryWhen.java:80)
at reactor.core.publisher.MonoRetryWhen.subscribeOrReturn(MonoRetryWhen.java:46)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:57)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:386)
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onNext(FluxFilterFuseable.java:112)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:386)
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1813)
at reactor.core.publisher.MonoCollectList$MonoCollectListSubscriber.onComplete(MonoCollectList.java:121)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onComplete(FluxOnAssembly.java:396)
at reactor.core.publisher.FluxFlatMap$FlatMapMain.checkTerminated(FluxFlatMap.java:839)
at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:601)
at reactor.core.publisher.FluxFlatMap$FlatMapMain.drain(FluxFlatMap.java:581)
at reactor.core.publisher.FluxFlatMap$FlatMapMain.onComplete(FluxFlatMap.java:458)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onComplete(FluxOnAssembly.java:396)
at reactor.core.publisher.FluxGroupBy$GroupByMain.checkTerminated(FluxGroupBy.java:424)
at reactor.core.publisher.FluxGroupBy$GroupByMain.drainLoop(FluxGroupBy.java:378)
at reactor.core.publisher.FluxGroupBy$GroupByMain.drain(FluxGroupBy.java:322)
at reactor.core.publisher.FluxGroupBy$GroupByMain.onComplete(FluxGroupBy.java:230)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onComplete(FluxOnAssembly.java:396)
at reactor.core.publisher.FluxIterable$IterableSubscription.fastPath(FluxIterable.java:359)