Irrecoverable part III : a fix

After part I:the problem, Part II: two reports here is part III.

We have backed up archivelog during a full and deleted them before the full completed.

RMAN> list backup of archivelog all;

List of Backup Sets
===================

BS Size Type Elapsed Completion
-- ------ ---- -------- ----------
15 4.00K DISK 00:00:00 13:31:08
BP Key: 15 Status: AVAILABLE
Piece Name: /FULL/0fq7gc0s_1_1

List of Archived Logs in backup set 15
Seq LowSCN LowTime NextSCN NextTime
--- ------- -------- ------- --------
15 355533 13:29:55 355777 13:31:08

BS Size Type Elapsed Completion
-- ------ ---- -------- ----------
25 4.00K DISK 00:00:00 13:31:26
BP Key: 25 Status: AVAILABLE
Piece Name: /ARCH/0pq7gc1e_1_1

List of Archived Logs in backup set 25
Seq LowSCN LowTime NextSCN NextTime
--- ------- -------- ------- --------
15 355533 13:29:55 355777 13:31:08

BS Size Type Elapsed Completion
-- ------ ---- -------- ----------
26 3.00K DISK 00:00:00 13:31:26
BP Key: 26 Status: AVAILABLE
Piece Name: /ARCH/0qq7gc1e_1_1

List of Archived Logs in backup set 26
Seq LowSCN LowTime NextSCN NextTime
--- ------- -------- ------- --------
16 355777 13:31:08 355827 13:31:22

BS Size Type Elapsed Completion
-- ------ ---- -------- ----------
28 2.50K DISK 00:00:00 13:31:28
BP Key: 28 Status: AVAILABLE
Piece Name: /FULL/0sq7gc1g_1_1

List of Archived Logs in backup set 28
Seq LowSCN LowTime NextSCN NextTime
--- ------- -------- ------- --------
17 355827 13:31:22 355863 13:31:28

Sequence 16 is missing in /FULL/ and is available in /ARCH/

Ok, let’s copy the missing pieces from ARCH to FULL

$ cd /
$ cp -p ARCH/* FULL/

Now let’s try. I save my directory on an offline location (tape/usb/cdrom) and dropped my database including backups.


cd /
tar cvf /tmp/FULL.tar FULL

Let’s drop (it’s just a test)

RMAN> startup force mount dba
RMAN> drop database including backups;
database dropped

Ok let’s get this USB stick back from the moon to my datacenter and see if I can restore …

cd /
tar xvf /tmp/FULL.tar

Let’s do this !

RMAN> startup force nomount
RMAN> restore controlfile from '/FULL/c-2414975447-20150521-01';
RMAN> alter database mount;

Now I want RMAN to look for other files in FULL and also marked expired stuff. The start with does the magic.

RMAN> catalog start with '/FULL/' noprompt;
RMAN> crosscheck backup;
RMAN> crosscheck copy;
RMAN> crosscheck archivelog all;
RMAN> restore database;
RMAN> recover database;
RMAN> alter database open resetlogs;

As @dbastorage said on twitter:
“if it was easy, we would not need DBAs! ”

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