显然没有特定原因，并且neo4j日志上没有任何内容，我们的应用程序正在获取此信息：
2019-01-30 14:15:08,715 WARN com.calenco.core.content3.ContentHandler:177 - Unable to acquire connection from the pool within configured maximum time of 60000ms
org.neo4j.driver.v1.exceptions.ClientException: Unable to acquire connection from the pool within configured maximum time of 60000ms
at org.neo4j.driver.internal.async.pool.ConnectionPoolImpl.processAcquisitionError(ConnectionPoolImpl.java:192)
at org.neo4j.driver.internal.async.pool.ConnectionPoolImpl.lambda$acquire$0(ConnectionPoolImpl.java:89)
at java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:822)
at java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:797)
at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977)
at org.neo4j.driver.internal.util.Futures.lambda$asCompletionStage$0(Futures.java:78)
at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:507)
at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:481)
at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.access$000(DefaultPromise.java:34)
at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise$1.run(DefaultPromise.java:431)
at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403)
at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)
at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:138)
at java.lang.Thread.run(Thread.java:745)
neo4j服务器仍在运行，并且正在向其Web浏览器控制台或cypher-shell CLI应答请求。另外，重新启动我们的应用程序可以重新获取与neo4j的连接。
我们的应用程序在启动时连接到neo4j一次，然后在运行时将其保持打开状态作为午餐，并根据需要针对该连接打开和关闭会话，以满足接收到的请求。
这是我们不到一个月内第二次看到上述异常。
有什么想法吗？
预先感谢