# Performing block media recovery
<a name="Appendix.Oracle.CommonDBATasks.block-media-recovery"></a>

You can recover individual data blocks, known as block media recovery, using the Amazon RDS procedures `rdsadmin.rdsadmin_rman_util.recover_datafile_block`. You can use this overloaded procedure to recover either an individual data block or a range of data blocks.

This procedure uses the following common parameter for RMAN tasks:
+ `p_rman_to_dbms_output`

For more information, see [Common parameters for RMAN procedures](Appendix.Oracle.CommonDBATasks.CommonParameters.md).

This procedure uses the following additional parameters.


****  

| Parameter name | Data type | Valid values | Default | Required | Description | 
| --- | --- | --- | --- | --- | --- | 
| `p_datafile` | `NUMBER` | A valid data file ID number. | — | Yes | The data file containing the corrupt blocks. Specify the data file in either of the following ways:[See the AWS documentation website for more details](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.Oracle.CommonDBATasks.block-media-recovery.html) | 
| `p_block` | `NUMBER` | A valid integer. | — | Yes | The number of an individual block to be recovered.<br />The following parameters are mutually exclusive:[See the AWS documentation website for more details](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.Oracle.CommonDBATasks.block-media-recovery.html) | 
| `p_from_block` | `NUMBER` | A valid integer. | — | Yes | The first block number in a range of blocks to be recovered.<br />The following parameters are mutually exclusive:[See the AWS documentation website for more details](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.Oracle.CommonDBATasks.block-media-recovery.html) | 
| `p_to_block` | `NUMBER` | A valid integer. | — | Yes | The last block number in a range of blocks to be recovered.<br />The following parameters are mutually exclusive:[See the AWS documentation website for more details](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.Oracle.CommonDBATasks.block-media-recovery.html) | 

This procedure is supported for the following Amazon RDS for Oracle DB engine versions:
+ Oracle Database 21c (21.0.0)
+ Oracle Database 19c (19.0.0)

The following example recovers block 100 in data file 5.

```
BEGIN
    rdsadmin.rdsadmin_rman_util.recover_datafile_block(
        p_datafile            => 5, 
        p_block               => 100,
        p_rman_to_dbms_output => TRUE);
END;
/
```

The following example recovers blocks 100 to 150 in data file 5.

```
BEGIN
    rdsadmin.rdsadmin_rman_util.recover_datafile_block(
        p_datafile            => 5, 
        p_from_block          => 100,
        p_to_block            => 150,
        p_rman_to_dbms_output => TRUE);
END;
/
```