Solarwinds N-Central - Exchange 2013 - Database cache Percent Hit -  value: 0

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Hello team,

I got a question on Solarwinds N-central alerts.

We have an exchange server being monitored by our N-Central. I got a failed status saying: "Exchange Database 2013 - Information Store". When I look into the details, I got a "Database cache Percent Hit (%) value: 0"


      Normal      90 - 100
      Warning      70 - 89
      Failed      0 - 69

When I look into the events viewer. I see Dcom error and MSExchangeDiagnostic event 1006 saying

The performance counter '\\servername\LogicalDisk(C:)\Free Megabytes' sustained a value of '24,123.00', for the '15' minute(s) interval starting at '27/09/2018 11:32:00 PM'. Additional information: None. Trigger Name:DatabaseDriveSpaceTrigger. Instance:c:

thanks for your help.

I apologise if there is an existing thread. you can post a link to it.
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timgreen7077Exchange Engineer
Distinguished Expert 2018

I'm not sure about Solar winds but I had this error on my exchange server and I contacted microsoft support about it and they suggested it can actually be ignored or disable the trigger for this alert. Issue is once up CU upgrade exchange it is reenabled again and you will have to disable again, but MS said it can be ignored. Below I have added some of what they sent me about disabling this alert. Everything below is from MS Supprt:

According to your error message, we suggest you disable the trigger in the Microsoft Exchange Diagnostics service config file. Usually, we can find it in the following location:

C:\Program Files\Microsoft\ExchangeServer\V15\Bin\Microsoft.Exchange.Diagnostics.Service.exe.config

And find the key words ”CatchupQueueTrigger”. Change Enable= True to False.

Then restart the MsExchange Mailbox Assistants services.

Thank you again for using Microsoft Support Services and have a good day.


Thanks Tim,

I'm not sure about the alert on n-central is related to the event log or not but I will wait for other guys to comment about the N-Central alert.
timgreen7077Exchange Engineer
Distinguished Expert 2018

sounds good.

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