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How to Find Archivelog Names and Sequence Number using the SCN in Oracle


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Finding Archivelog Names and Sequence Number using the SCN

There are many situations when we have the time or scn and you want to know the archivelog sequence number or archivelog name to proceed further. For example I had a situation today when there was some data deleted from an important table. We know the timestamp when this happened and we decided to mine the archivelogs generated at this timestamp using log miner. I tried to find the database SCN for the timestamp How to Find SCN from Timestamp and Vice Versa in Oracle and used query below to find the archivelogs generated at this timestamp and are good candidate to mine.

 SQL>set pages 100 lines 100
SQL> col name for a70
SQL>col first_change# for 9999999999
SQL>col next_change# for 9999999999
SQL>alter session set nls_date_format='DD-MON-RRRR HH24:MI:SS';
SQL>select name, thread#, sequence#, status, first_time, next_time, first_change#, next_change# from v$archived_log
where 456922382062 between first_change# and next_change#;

 NOTE: The status column show you whether the archive is present of deleted from the disk.D= Deleted and A=Available

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