# Crosschecking archived redo logs
<a name="Appendix.Oracle.CommonDBATasks.Crosscheck"></a>

You can crosscheck archived redo logs using the Amazon RDS procedure `rdsadmin.rdsadmin_rman_util.crosscheck_archivelog`.

You can use this procedure to crosscheck the archived redo logs registered in the control file and optionally delete the expired logs records. When RMAN makes a backup, it creates a record in the control file. Over time, these records increase the size of the control file. We recommend that you remove expired records periodically.

**Note**  
Standard Amazon RDS backups don't use RMAN and therefore don't create records in the control file.

This procedure uses the common parameter `p_rman_to_dbms_output` for RMAN tasks.

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

This procedure also uses the following additional parameter.


****  

| Parameter name | Data type | Valid values | Default | Required | Description | 
| --- | --- | --- | --- | --- | --- | 
|  `p_delete_expired`  |  boolean  |  `TRUE`, `FALSE`  |  `TRUE`  |  No  |  When `TRUE`, delete expired archived redo log records from the control file. When `FALSE`, retain the expired archived redo log records in the control file.   | 

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 marks archived redo log records in the control file as expired, but does not delete the records.

```
BEGIN
    rdsadmin.rdsadmin_rman_util.crosscheck_archivelog(
        p_delete_expired      => FALSE,  
        p_rman_to_dbms_output => FALSE);
END;
/
```

The following example deletes expired archived redo log records from the control file.

```
BEGIN
    rdsadmin.rdsadmin_rman_util.crosscheck_archivelog(
        p_delete_expired      => TRUE,  
        p_rman_to_dbms_output => FALSE);
END;
/
```