exchange database have automatic switch over

Louis Ruth 1 Reputation point
2021-02-08T07:22:58.317+00:00

the event log as below

A request to mount Active or Passive database was processed in 0.0214939 seconds.

Flags: 0x00000008
Error code: NoError (0x00000000)

Information Store - (47140,R,0,15.01.1779.002) The database engine has begun replaying logfile E:\Program Files\Microsoft\Exchange Server\V15\Mailbox\database\E04.log.

Previous Log Processing Stats:
1 395.168726 -2.929166 (1584) CM +J(CM:1584, PgRf:329433, Rd:3696/31, Dy:3782/520119, Lg:139787869/556120) +M(C:1341976K, Fs:237443, WS:363016K # 348824K, PF:1381028K # 1367372K, P:1381028K).

Then run a log to copy to E drive
“Information Store - MBX - Senior01 (47140,R,0,15.01.1779.002) MBX - Senior01: The database engine has begun replaying logfile E:\Program Files\Microsoft\Exchange Server\V15. “

how to avoid this status , because when failover to other database , around 1 hr the database will auto switch to original database and mounted back

is it the right not good or other possible reason

it is too trouble because the status happen the user outlook will no response and hang

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Louis Ruth 1 Reputation point
    2021-02-23T09:01:10.96+00:00

    Scenario: GetKillBit. Failed to download killbit list from OMEX server. Exception: System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
    at System.Net.Sockets.Socket.EndReceive(IAsyncResult asyncResult)
    at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)
    --- End of inner exception stack trace ---
    at System.Net.TlsStream.EndWrite(IAsyncResult asyncResult)
    at System.Net.ConnectStream.WriteHeadersCallback(IAsyncResult ar)
    --- End of inner exception stack trace ---
    at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
    at Microsoft.Exchange.Data.ApplicationLogic.Extension.BaseAsyncOmexCommand.<>c__DisplayClass18_0.<EndGetResponseCallback>b__0()

  2. Louis Ruth 1 Reputation point
    2021-03-03T02:58:41.953+00:00

    event 1146 The cluster Resource Hosting Subsystem (RHS) process was terminated and will be restarted. This is typically associated with cluster health detection and recovery of a resource. Refer to the System event log to determine which resource and resource DLL is causing the issue.

    event id 1177
    The Cluster service is shutting down because quorum was lost. This could be due to the loss of network connectivity between some or all nodes in the cluster, or a failover of the witness disk.
    Run the Validate a Configuration wizard to check your network configuration. If the condition persists, check for hardware or software errors related to the network adapter. Also check for failures in any other network components to which the node is connected such as hubs, switches, or bridges.

    have make cluster node two host restart last night ?

    do you advise to create a new cluster for solve this issue?

    event id 1135
    Cluster node 'exg01' was removed from the active failover cluster membership. The Cluster service on this node may have stopped. This could also be due to the node having lost communication with other active nodes in the failover cluster. Run the Validate a Configuration wizard to check your network configuration. If the condition persists, check for hardware or software errors related to the network adapters on this node. Also check for failures in any other network components to which the node is connected such as hubs, switches, or bridges.

  3. Louis Ruth 1 Reputation point
    2021-03-30T07:12:49.477+00:00

    Get-Cluster | Get-ClusterNode | Select Name,DynamicWeight,NodeWeight,Id,State

    Name : a
    DynamicWeight : 1
    NodeWeight : 1
    Id : 1
    State : Up

    Name : b
    DynamicWeight : 1
    NodeWeight : 1
    Id : 2
    State : Up

    Name : c
    DynamicWeight : 1
    NodeWeight : 1
    Id : 3
    State : Up

    status is up , do you i can test remove one of exchange and re-add to DAG group