MSSQL on Linux: Could not create AppDomain manager

Microsoft.SQLServer.Linux.EventRule.DBEngine.Could_not_create_AppDomain_manager_5_Rule (Rule)

The rule triggers an alert when SQL Server fails to create an application domain manager

Knowledge Base article:

Summary

SQL Server failed to create an application domain manager. This may be caused when there is not enough memory to start the application domain.

Causes

When memory resources are too low, an application will not be able to create an AppDomain.

Resolutions

Verify that there are no hardware issues. Check Linux system and application logs to identify errors related to system stress or memory. Increase the amount of available memory. Consider the following solutions to increase the available memory:

Increase the size of the paging file.
Restart the server with the -g memory_to_reserve option to increase the amount of memory that SQL Server will leave available for memory allocations within the SQL Server process.
Add physical memory.
Restart the computer and run again. If the problem persists, contact a product support provider.

Overridable Parameters

Name	Description	Default Value
Enabled	Enables or disables the workflow.	Yes
Interval (seconds)	The recurring interval of time in seconds in which to run the workflow.	300
Priority	Defines Alert Priority.	1
Severity	Defines Alert Severity.	2
Synchronization Time	The synchronization time specified by using a 24-hour format. May be omitted.
Timeout (seconds)	Specifies the time the workflow is allowed to run before being closed and marked as failed.	200
Timeout for query execution (seconds)	The workflow will fail and register an event, if the query execution takes longer than the specified period.	60
Timeout for database connection (seconds)	The workflow will fail and register an event, if it cannot access the database during the specified period.	15

Element properties:

Target

Microsoft.SQLServer.Linux.DBEngine

Category

EventCollection

Enabled

True

Alert Generate

True

Alert Severity

Error

Alert Priority

Normal

Remotable

True

Alert Message

MSSQL on Linux: Could not create AppDomain manager

{2}

Comment

Mom2017ID='{F9031B7B-2BA0-42C2-9F89-910ACB7E5068}';MOM2017GroupID={467ECC75-C5DA-42BD-955C-A73BBB51AF74}

Member Modules:

ID	Module Type	TypeId	RunAs
_F6DA1507_12AF_11D3_AB21_00A0C98620CE_	DataSource	Microsoft.SQLServer.Linux.DataSource.EventCollectionFiltered	Default
GenerateAlert	WriteAction	System.Health.GenerateAlert	Default

Source Code:

<Rule ID="Microsoft.SQLServer.Linux.EventRule.DBEngine.Could_not_create_AppDomain_manager_5_Rule" Target="SqlDiscL!Microsoft.SQLServer.Linux.DBEngine" Enabled="true" ConfirmDelivery="true" Remotable="true" Comment="Mom2017ID='{F9031B7B-2BA0-42C2-9F89-910ACB7E5068}';MOM2017GroupID={467ECC75-C5DA-42BD-955C-A73BBB51AF74}">

  <Category>EventCollection</Category>

  <DataSources>

    <DataSource ID="_F6DA1507_12AF_11D3_AB21_00A0C98620CE_" Comment="{F6DA1507-12AF-11D3-AB21-00A0C98620CE}" TypeID="Microsoft.SQLServer.Linux.DataSource.EventCollectionFiltered">

      <MachineName>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/MachineName$</MachineName>

      <NetbiosComputerName>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/NetbiosComputerName$</NetbiosComputerName>

      <InstanceName>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/InstanceName$</InstanceName>

      <ConnectionString>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/ConnectionString$</ConnectionString>

      <InstanceVersion>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/Version$</InstanceVersion>

      <InstanceEdition>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/Edition$</InstanceEdition>

      <SqlExecTimeoutSeconds>60</SqlExecTimeoutSeconds>

      <SqlTimeoutSeconds>15</SqlTimeoutSeconds>

      <TimeoutSeconds>200</TimeoutSeconds>

      <IntervalSeconds>300</IntervalSeconds>

      <SyncTime/>

      <EventDisplayNumber>10303</EventDisplayNumber>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="GenerateAlert" TypeID="Health!System.Health.GenerateAlert">

      <Priority>1</Priority>

      <Severity>2</Severity>

      <AlertMessageId>$MPElement[Name="Microsoft.SQLServer.Linux.EventRule.DBEngine.Could_not_create_AppDomain_manager_5_Rule.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

        <AlertParameter1>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/MachineName$</AlertParameter1>

        <AlertParameter2>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/InstanceName$</AlertParameter2>

        <AlertParameter3>Event ID: $Data/Property[@Name='EventID']$. $Data/Property[@Name='Message']$</AlertParameter3>

      </AlertParameters>

      <Suppression>

        <SuppressionValue/>

      </Suppression>

    </WriteAction>

  </WriteActions>

</Rule>