---
title: "Mount Tape Event Class | Microsoft Docs"
ms.custom: ""
ms.date: "06/13/2017"
ms.prod: "sql-server-2014"
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ms.technology: supportability
ms.topic: conceptual
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helpviewer_keywords: 
  - "Mount Tape event class"
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author: stevestein
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---
# Mount Tape Event Class
  The Mount Tape event class occurs when a tape mount request is received. Use this event class to monitor tape mount requests and their success or failure.  
  
## Mount Tape Event Class Data Columns  
  
|Data column name|Data type|Description|Column ID|Filterable|  
|----------------------|---------------|-----------------|---------------|----------------|  
|ApplicationName|`nvarchar`|Name of the client application that created the connection to an instance of [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)]. This column is populated with the values passed by the application.|10|Yes|  
|ClientProcessID|`int`|ID assigned by the host computer to the process where the client application is running. This data column is populated if the client provides the client process ID.|9|Yes|  
|DatabaseID|`int`|ID of the database specified by the USE *database* statement or the default database if no USE *database* statement has been issued for a specified instance. [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] displays the name of the database if the ServerName data column is captured in the trace and the server is available. Determine the value for a database by using the DB_ID function.|3|Yes|  
|DatabaseName|`nvarchar`|Name of the database in which the user statement is running.|35|Yes|  
|Duration|`bigint`|Amount of time (in microseconds) taken by the event.|13|Yes|  
|EndTime|`datetime`|For Mount Request events, the time of the mount time-out if a time-out occurs; otherwise, the time of the event itself (in such cases, StartTime indicates the time of the corresponding mount request).|15|Yes|  
|EventClass|`int`|Type of event = 195.|27|No|  
|EventSequence|`int`|The sequence of a specified event within the request.|51|No|  
|EventSubClass|`int`|Type of event subclass.<br /><br /> 1 = Tape mount request<br /><br /> 2 = Tape mount complete<br /><br /> 3 = Tape mount canceled|21|Yes|  
|GroupID|`int`|ID of the workload group where the SQL Trace event fires.|66|Yes|  
|HostName|`nvarchar`|Name of the computer on which the client is running. This data column is populated if the client provides the host name. To determine the host name, use the HOST_NAME function.|8|Yes|  
|IsSystem|`int`|Indicates whether the event occurred on a system process or a user process. 1 = system, 0 = user.|60|Yes|  
|LoginName|`nvarchar`|Name of the login of the user (either [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] security login or the [!INCLUDE[msCoName](../../includes/msconame-md.md)] Windows login credentials in the form of DOMAIN\\*username*).|11|Yes|  
|NTDomainName|`nvarchar`|Windows domain to which the user belongs.|7|Yes|  
|NTUserName|`nvarchar`|Windows user name.|6|Yes|  
|ServerName|`nvarchar`|Name of the instance of [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] being traced.|26|No|  
|SessionLoginName|`nvarchar`|Login name of the user who originated the session. For example, if you connect to [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] using Login1 and execute a statement as Login2, SessionLoginName shows Login1 and LoginName shows Login2. This column displays both [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] and Windows logins.|64|Yes|  
|SPID|`int`|ID of the Session on which the event occurred.|12|Yes|  
|StartTime|`datetime`|Time at which the event started, if available.|14|Yes|  
|TextData|`ntext`|*physical device name* [ ( *logical device name* ) ]. The logical device name displays only if it is defined in the sys.backup_devices catalog view.|1|Yes|  
  
## See Also  
 [sp_trace_setevent &#40;Transact-SQL&#41;](/sql/relational-databases/system-stored-procedures/sp-trace-setevent-transact-sql)   
 [Back Up and Restore of SQL Server Databases](../backup-restore/back-up-and-restore-of-sql-server-databases.md)