# MicrosoftSQLServerSettings
<a name="API_MicrosoftSQLServerSettings"></a>

Provides information that defines a Microsoft SQL Server endpoint.

## Contents
<a name="API_MicrosoftSQLServerSettings_Contents"></a>

 ** AuthenticationMethod **   <a name="DMS-Type-MicrosoftSQLServerSettings-AuthenticationMethod"></a>
Specifies the authentication method to be used with Microsoft SQL Server.  
Type: String  
Valid Values: `password | kerberos`   
Required: No

 ** BcpPacketSize **   <a name="DMS-Type-MicrosoftSQLServerSettings-BcpPacketSize"></a>
The maximum size of the packets (in bytes) used to transfer data using BCP.  
Type: Integer  
Required: No

 ** ControlTablesFileGroup **   <a name="DMS-Type-MicrosoftSQLServerSettings-ControlTablesFileGroup"></a>
Specifies a file group for the Amazon DMS internal tables. When the replication task starts, all the internal Amazon DMS control tables (awsdms\_ apply\_exception, awsdms\_apply, awsdms\_changes) are created for the specified file group.  
Type: String  
Required: No

 ** DatabaseName **   <a name="DMS-Type-MicrosoftSQLServerSettings-DatabaseName"></a>
Database name for the endpoint.  
Type: String  
Required: No

 ** ForceLobLookup **   <a name="DMS-Type-MicrosoftSQLServerSettings-ForceLobLookup"></a>
Forces LOB lookup on inline LOB.  
Type: Boolean  
Required: No

 ** Password **   <a name="DMS-Type-MicrosoftSQLServerSettings-Password"></a>
Endpoint connection password.  
Type: String  
Required: No

 ** Port **   <a name="DMS-Type-MicrosoftSQLServerSettings-Port"></a>
Endpoint TCP port.  
Type: Integer  
Required: No

 ** QuerySingleAlwaysOnNode **   <a name="DMS-Type-MicrosoftSQLServerSettings-QuerySingleAlwaysOnNode"></a>
Cleans and recreates table metadata information on the replication instance when a mismatch occurs. An example is a situation where running an alter DDL statement on a table might result in different information about the table cached in the replication instance.  
Type: Boolean  
Required: No

 ** ReadBackupOnly **   <a name="DMS-Type-MicrosoftSQLServerSettings-ReadBackupOnly"></a>
When this attribute is set to `Y`, Amazon DMS only reads changes from transaction log backups and doesn't read from the active transaction log file during ongoing replication. Setting this parameter to `Y` enables you to control active transaction log file growth during full load and ongoing replication tasks. However, it can add some source latency to ongoing replication.  
Type: Boolean  
Required: No

 ** SafeguardPolicy **   <a name="DMS-Type-MicrosoftSQLServerSettings-SafeguardPolicy"></a>
Use this attribute to minimize the need to access the backup log and enable Amazon DMS to prevent truncation using one of the following two methods.  
 *Start transactions in the database:* This is the default method. When this method is used, Amazon DMS prevents TLOG truncation by mimicking a transaction in the database. As long as such a transaction is open, changes that appear after the transaction started aren't truncated. If you need Microsoft Replication to be enabled in your database, then you must choose this method.  
 *Exclusively use sp\_repldone within a single task*: When this method is used, Amazon DMS reads the changes and then uses sp\_repldone to mark the TLOG transactions as ready for truncation. Although this method doesn't involve any transactional activities, it can only be used when Microsoft Replication isn't running. Also, when using this method, only one Amazon DMS task can access the database at any given time. Therefore, if you need to run parallel Amazon DMS tasks against the same database, use the default method.  
Type: String  
Valid Values: `rely-on-sql-server-replication-agent | exclusive-automatic-truncation | shared-automatic-truncation`   
Required: No

 ** SecretsManagerAccessRoleArn **   <a name="DMS-Type-MicrosoftSQLServerSettings-SecretsManagerAccessRoleArn"></a>
The full Amazon Resource Name (ARN) of the IAM role that specifies Amazon DMS as the trusted entity and grants the required permissions to access the value in `SecretsManagerSecret`. The role must allow the `iam:PassRole` action. `SecretsManagerSecret` has the value of the Amazon Secrets Manager secret that allows access to the SQL Server endpoint.  
You can specify one of two sets of values for these permissions. You can specify the values for this setting and `SecretsManagerSecretId`. Or you can specify clear-text values for `UserName`, `Password`, `ServerName`, and `Port`. You can't specify both. For more information on creating this `SecretsManagerSecret` and the `SecretsManagerAccessRoleArn` and `SecretsManagerSecretId` required to access it, see [Using secrets to access Amazon Database Migration Service resources](https://docs.amazonaws.cn/dms/latest/userguide/CHAP_Security.html#security-iam-secretsmanager) in the * Amazon Database Migration Service User Guide*.
Type: String  
Required: No

 ** SecretsManagerSecretId **   <a name="DMS-Type-MicrosoftSQLServerSettings-SecretsManagerSecretId"></a>
The full ARN, partial ARN, or friendly name of the `SecretsManagerSecret` that contains the SQL Server endpoint connection details.  
Type: String  
Required: No

 ** ServerName **   <a name="DMS-Type-MicrosoftSQLServerSettings-ServerName"></a>
Fully qualified domain name of the endpoint. For an Amazon RDS SQL Server instance, this is the output of [DescribeDBInstances](https://docs.amazonaws.cn/AmazonRDS/latest/APIReference/API_DescribeDBInstances.html), in the ` [Endpoint](https://docs.amazonaws.cn/AmazonRDS/latest/APIReference/API_Endpoint.html).Address` field.  
Type: String  
Required: No

 ** TlogAccessMode **   <a name="DMS-Type-MicrosoftSQLServerSettings-TlogAccessMode"></a>
Indicates the mode used to fetch CDC data.  
Type: String  
Valid Values: `BackupOnly | PreferBackup | PreferTlog | TlogOnly`   
Required: No

 ** TrimSpaceInChar **   <a name="DMS-Type-MicrosoftSQLServerSettings-TrimSpaceInChar"></a>
Use the `TrimSpaceInChar` source endpoint setting to right-trim data on CHAR and NCHAR data types during migration. Setting `TrimSpaceInChar` does not left-trim data. The default value is `true`.  
Type: Boolean  
Required: No

 ** UseBcpFullLoad **   <a name="DMS-Type-MicrosoftSQLServerSettings-UseBcpFullLoad"></a>
Use this to attribute to transfer data for full-load operations using BCP. When the target table contains an identity column that does not exist in the source table, you must disable the use BCP for loading table option.  
Type: Boolean  
Required: No

 ** Username **   <a name="DMS-Type-MicrosoftSQLServerSettings-Username"></a>
Endpoint connection user name.  
Type: String  
Required: No

 ** UseThirdPartyBackupDevice **   <a name="DMS-Type-MicrosoftSQLServerSettings-UseThirdPartyBackupDevice"></a>
When this attribute is set to `Y`, DMS processes third-party transaction log backups if they are created in native format.  
Type: Boolean  
Required: No

## See Also
<a name="API_MicrosoftSQLServerSettings_SeeAlso"></a>

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/dms-2016-01-01/MicrosoftSQLServerSettings) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/dms-2016-01-01/MicrosoftSQLServerSettings) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/dms-2016-01-01/MicrosoftSQLServerSettings)