oracle-databasesqlplusdatabase-backupsrman

RMAN backup is failing with write error on file

I am trying to take a level 0 incremental backup of my database on a linux server.

 backup incremental level 0 database;

When I run it I get 

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 06/03/2020 10:52:40
ORA-19502: write error on file "/opt/oracle/product/12.2.0/rman/full_1jv1ql2l_51_1", block number 1195008 (block size=8192)
ORA-27072: File I/O error
Additional information: 4
Additional information: 1195008
Additional information: 995328

Checking the disk space returns 

Filesystem                Size  Used Avail Use% Mounted on
devtmpfs                  7.9G     0  7.9G   0% /dev
tmpfs                     7.9G     0  7.9G   0% /dev/shm
tmpfs                     7.9G  2.2M  7.9G   1% /run
tmpfs                     7.9G     0  7.9G   0% /sys/fs/cgroup
/dev/sda1                  30G   20G  9.2G  68% /
/dev/sda3                  19G  249M   18G   2% /home
/dev/sda4                 430G  255G  154G  63% /oracle

All the research I've done is saying that I'm running out of space but clearly I'm not. What else am I missing to get this up and running?

Output of 

show parameter reco;

enter image description here

This is my RMAN configuration

using target database control file instead of recovery catalog
RMAN configuration parameters for database with db_unique_name ORCL are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 2 DAYS;
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT   '/opt/oracle/product/12.2.0/rman/full_%u_%s_%p';
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE RMAN OUTPUT TO KEEP FOR 2 DAYS;
CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 1 TIMES TO DISK;
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/opt/oracle/product/12.2.0/dbs/snapcf_orcl.f'; # default
Solution

  • Regarding to your output of "df -h" you are trying to take a backup under file system /opt which is located under / the free space is only 9G , the /Oracle having 154G and you need to allocate channel inside your backup script to determine the location to be /Oracle

    Thank you :)