# DescribeDBParameters
<a name="API_DescribeDBParameters"></a>

Returns the detailed parameter list for a particular DB parameter group.

## Request Parameters
<a name="API_DescribeDBParameters_RequestParameters"></a>

 For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

 ** DBParameterGroupName **   
The name of a specific DB parameter group to return details for.  
Constraints:  
+ If supplied, must match the name of an existing DBParameterGroup.
Type: String  
Required: Yes

 **Filters.Filter.N**   
A filter that specifies one or more DB parameters to describe.  
The only supported filter is `parameter-name`. The results list only includes information about the DB parameters with these names.  
Type: Array of [Filter](API_Filter.md) objects  
Required: No

 ** Marker **   
An optional pagination token provided by a previous `DescribeDBParameters` request. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by `MaxRecords`.  
Type: String  
Required: No

 ** MaxRecords **   
The maximum number of records to include in the response. If more records exist than the specified `MaxRecords` value, a pagination token called a marker is included in the response so that you can retrieve the remaining results.  
Default: 100  
Constraints: Minimum 20, maximum 100.  
Type: Integer  
Required: No

 ** Source **   
The parameter types to return.  
Default: All parameter types returned  
Valid Values: `user | system | engine-default`   
Type: String  
Required: No

## Response Elements
<a name="API_DescribeDBParameters_ResponseElements"></a>

The following elements are returned by the service.

 ** Marker **   
An optional pagination token provided by a previous request. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by `MaxRecords`.  
Type: String

 **Parameters.Parameter.N**   
A list of `Parameter` values.  
Type: Array of [Parameter](API_Parameter.md) objects

## Errors
<a name="API_DescribeDBParameters_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** DBParameterGroupNotFound **   
 `DBParameterGroupName` doesn't refer to an existing DB parameter group.  
HTTP Status Code: 404

## Examples
<a name="API_DescribeDBParameters_Examples"></a>

### Example
<a name="API_DescribeDBParameters_Example_1"></a>

This example illustrates one usage of DescribeDBParameters.

#### Sample Request
<a name="API_DescribeDBParameters_Example_1_Request"></a>

```
https://rds.us-east-1.amazonaws.com/
   ?Action=DescribeDBParameters
   &DBParameterGroupName=oracle-logs
   &MaxRecords=100
   &SignatureMethod=HmacSHA256
   &SignatureVersion=4
   &Version=2014-10-31
   &X-Amz-Algorithm=AWS4-HMAC-SHA256
   &X-Amz-Credential=AKIADQKE4SARGYLE/20140421/us-east-1/rds/aws4_request
   &X-Amz-Date=20140421T231357Z
   &X-Amz-SignedHeaders=content-type;host;user-agent;x-amz-content-sha256;x-amz-date
   &X-Amz-Signature=ac9b18d6ae7cab4bf45ed2caa99cd8438101b293c0a84e80c3bab77f7369cc7
```

#### Sample Response
<a name="API_DescribeDBParameters_Example_1_Response"></a>

```
<DescribeDBParametersResponse xmlns="http://rds.amazonaws.com/doc/2014-10-31/">
  <DescribeDBParametersResult>
    <Marker>bGlzdGVuZXJfbmV0d29ya3M=</Marker>
    <Parameters>
      <Parameter>
        <DataType>integer</DataType>
        <Source>engine-default</Source>
        <IsModifiable>true</IsModifiable>
        <Description>number of AQ Time Managers to start</Description>
        <ApplyType>dynamic</ApplyType>
        <AllowedValues>0-40</AllowedValues>
        <ParameterName>aq_tm_processes</ParameterName>
      </Parameter>
      <Parameter>
        <ParameterValue>300</ParameterValue>
        <DataType>integer</DataType>
        <Source>system</Source>
        <IsModifiable>false</IsModifiable>
        <Description>Maximum number of seconds of redos the standby could lose</Description>
        <ApplyType>dynamic</ApplyType>
        <ParameterName>archive_lag_target</ParameterName>
      </Parameter>
      <Parameter>
        <ParameterValue>/rdsdbdata/admin/{dbName}/adump</ParameterValue>
        <DataType>string</DataType>
        <Source>system</Source>
        <IsModifiable>false</IsModifiable>
        <Description>Directory in which auditing files are to reside</Description>
        <ApplyType>dynamic</ApplyType>
        <ParameterName>audit_file_dest</ParameterName>
      </Parameter>
      <Parameter>
        <DataType>boolean</DataType>
        <Source>engine-default</Source>
        <IsModifiable>false</IsModifiable>
        <Description>enable sys auditing</Description>
        <ApplyType>static</ApplyType>
        <AllowedValues>TRUE,FALSE</AllowedValues>
        <ParameterName>audit_sys_operations</ParameterName>
      </Parameter>
      <Parameter>
        <DataType>string</DataType>
        <Source>engine-default</Source>
        <IsModifiable>false</IsModifiable>
        <Description>Syslog facility and level</Description>
        <ApplyType>static</ApplyType>
        <ParameterName>audit_syslog_level</ParameterName>
      </Parameter>
      <Parameter>
        <DataType>string</DataType>
        <Source>engine-default</Source>
        <IsModifiable>true</IsModifiable>
        <Description>enable system auditing</Description>
        <ApplyType>static</ApplyType>
        <AllowedValues>DB,OS,NONE,TRUE,FALSE,DB_EXTENDED,XML</AllowedValues>
        <ParameterName>audit_trail</ParameterName>
      </Parameter>
    </Parameters>
  </DescribeDBParametersResult>
  <ResponseMetadata>
    <RequestId>8c40488f-b9ff-11d3-a15e-7ac49293f4fa</RequestId>
  </ResponseMetadata>
</DescribeDBParametersResponse>
```

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

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/rds-2014-10-31/DescribeDBParameters) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/rds-2014-10-31/DescribeDBParameters) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/rds-2014-10-31/DescribeDBParameters) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/rds-2014-10-31/DescribeDBParameters) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/rds-2014-10-31/DescribeDBParameters) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/rds-2014-10-31/DescribeDBParameters) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/rds-2014-10-31/DescribeDBParameters) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/rds-2014-10-31/DescribeDBParameters) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/rds-2014-10-31/DescribeDBParameters) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/rds-2014-10-31/DescribeDBParameters)