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crosscheck archivelog all

In this article, we are going to learn, why we need to run crosscheck archivelog all commands. You must read this article carefully and follow all steps.

Why we run crosscheck archivelog all?

Rman utility is a very powerful utility that is used for creating Oracle Database backup. The crosscheck command only verifies the existence of archive files on disk. Suppose after creating a database backup user manually removes the archives from the physical disk.

Space is released immediately on the disk but these archive files entry still remains in the RMAN repository. Now if the user tries to create a new database backup using the rman utility it will show the archive-related error.

So, if you run the crosscheck archivelog all command before taking the rman backup it removes the entry of those files which is not available on disk.

Check archivelog

For example, if we check archive logs on their physical location, we get this type of record list as shown below screenshot.

archive log list
Archive log location

Archives list which is available on the location

Archive list

Remove archives from physical location

Here I’m going to show you if we remove archives from their physical location, then how to react RMAN.

$ rm  arch1_2*

I removed archives, now check rman reaction on it:

RMAN> list expired archivelog all;
list expired archivelog all

See in the above screenshot, rman still doesn’t have deleted archives information in the repository.

Run crosscheck archivelog all

Now, run crosscheck archivelog all commands on RMAN prompt, then check the expired archivelog again.

RMAN> crosscheck archivelog all;
crosscheck archivelog all
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=76 device type=DISK
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_5_1086532269.dbf RECID=3 STAMP=1090866038
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_6_1086532269.dbf RECID=4 STAMP=1090866038
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_7_1086532269.dbf RECID=5 STAMP=1090886899
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_8_1086532269.dbf RECID=6 STAMP=1090941949
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_9_1086532269.dbf RECID=7 STAMP=1090941949
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_10_1086532269.dbf RECID=8 STAMP=1091664227
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_11_1086532269.dbf RECID=9 STAMP=1091689489
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_12_1086532269.dbf RECID=10 STAMP=1092290421
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_13_1086532269.dbf RECID=11 STAMP=1092315643
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_14_1086532269.dbf RECID=12 STAMP=1094387912
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_15_1086532269.dbf RECID=13 STAMP=1094603459
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_16_1086532269.dbf RECID=14 STAMP=1095767844
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_17_1086532269.dbf RECID=15 STAMP=1095767845
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_18_1086532269.dbf RECID=16 STAMP=1095767847
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_19_1086532269.dbf RECID=17 STAMP=1095767848
validation failed for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_20_1086532269.dbf RECID=18 STAMP=1095767850
validation failed for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_21_1086532269.dbf RECID=19 STAMP=1095767850
validation failed for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_22_1086532269.dbf RECID=20 STAMP=1095767851
validation failed for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_23_1086532269.dbf RECID=21 STAMP=1095767854
validation failed for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_24_1086532269.dbf RECID=22 STAMP=1095767855
validation failed for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_25_1086532269.dbf RECID=23 STAMP=1095767857
validation failed for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_26_1086532269.dbf RECID=24 STAMP=1095767857
validation failed for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_27_1086532269.dbf RECID=25 STAMP=1095767860
validation failed for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_28_1086532269.dbf RECID=26 STAMP=1095767861
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_29_1086532269.dbf RECID=27 STAMP=1095769970
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_30_1086532269.dbf RECID=28 STAMP=1095769970
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_31_1086532269.dbf RECID=29 STAMP=1095769971
validation succeeded for archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_32_1086532269.dbf RECID=30 STAMP=1095769972
Crosschecked 28 objects

Clearly, you can see in the above output the status of those archives which we removed from their physical location showing “validation failed for archived log“.

Let’s check archivelog status again.

RMAN> list expired archivelog all;
list expired archivelog all

This time you can see, it’s showing those archives list which we removed.

How to delete expired archivelog?

Before taking database backup using RMAN, you must be clear deleted archivelog from the rman repository using the below command.

RMAN>delete expired archivelog all;

Output:

released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=76 device type=DISK
List of Archived Log Copies for database with db_unique_name DIGITAL
=====================================================================

Key     Thrd Seq     S Low Time
------- ---- ------- - ---------
18      1    20      X 04-FEB-22
        Name: /u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_20_1086532269.dbf

19      1    21      X 04-FEB-22
        Name: /u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_21_1086532269.dbf

20      1    22      X 04-FEB-22
        Name: /u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_22_1086532269.dbf

21      1    23      X 04-FEB-22
        Name: /u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_23_1086532269.dbf

22      1    24      X 04-FEB-22
        Name: /u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_24_1086532269.dbf

23      1    25      X 04-FEB-22
        Name: /u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_25_1086532269.dbf

24      1    26      X 04-FEB-22
        Name: /u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_26_1086532269.dbf

25      1    27      X 04-FEB-22
        Name: /u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_27_1086532269.dbf

26      1    28      X 04-FEB-22
        Name: /u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_28_1086532269.dbf


Do you really want to delete the above objects (enter YES or NO)? YES
deleted archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_20_1086532269.dbf RECID=18 STAMP=1095767850
deleted archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_21_1086532269.dbf RECID=19 STAMP=1095767850
deleted archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_22_1086532269.dbf RECID=20 STAMP=1095767851
deleted archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_23_1086532269.dbf RECID=21 STAMP=1095767854
deleted archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_24_1086532269.dbf RECID=22 STAMP=1095767855
deleted archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_25_1086532269.dbf RECID=23 STAMP=1095767857
deleted archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_26_1086532269.dbf RECID=24 STAMP=1095767857
deleted archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_27_1086532269.dbf RECID=25 STAMP=1095767860
deleted archived log
archived log file name=/u01/app/oracle/product/12.2.0/dbhome_1/dbs/arch1_28_1086532269.dbf RECID=26 STAMP=1095767861
Deleted 9 EXPIRED objects

Now error removed:

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