Sitecore Xconnect lock time expire issue

Question

I am using sitecore 9.3 and facing an issue with xconnect when using identifyas in the code to identify the user using the email i got the below exception

Exception: Sitecore.Analytics.DataAccess.XdbUnavailableException Message: xDB unavailable Source: Sitecore.Analytics.XConnect at Sitecore.Analytics.XConnect.DataAccess.XConnectDataAdapterProvider.ExecuteWithExceptionHandling[T](Func2 func) at Sitecore.Analytics.XConnect.Diagnostics.PerformanceCounters.OperationPerformanceMonitorExtensions.<>c__DisplayClass1_0.<Monitor>b__0() at Sitecore.Analytics.XConnect.Diagnostics.PerformanceCounters.OperationPerformanceMonitorExtensions.Monitor[T](OperationPerformanceMonitorBase monitor, Func1 operation) at Sitecore.Analytics.Tracking.StandardSession.IdentifyAs(String source, String knownIdentifier) at Authentication.Pipelines.CookieAuthentication.SignedIn.UpdateUserProfile.Process(SignedInArgs args)

Nested Exception

Exception: Sitecore.XConnect.XdbCollectionUnavailableException Message: { "Message": "Operation failed: The lock time has expired." } Source: Sitecore.XConnect.Client at Sitecore.XConnect.Client.XConnectSynchronousExtensions.SuspendContextLock(Func1 taskFactory) at Sitecore.Analytics.XConnect.DataAccess.XConnectDataAdapterProvider.<>c__DisplayClass35_0.<ExecuteWithExceptionHandling>b__0(IXdbContext c) at Sitecore.Analytics.XConnect.DataAccess.XConnectDataAdapterProvider.ExecuteWithExceptionHandling[T](Func2 func)

Answer 1

The issue was related to the time of the SQL server was not correct and was different from that on CD\CM. Issue is fixed after adjusting the time on SQL server.