command I ran
rman
connect target sys/*****@orcl;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
ORA-09925: Unable to create audit trail file
Linux-x86_64 Error: 28: No space left on device
Additional information: 9925
I have sufficient space in oracle home and tmp.
$ /home/oracle> df -k /u01
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VGExaDb-LVDbOra1
165008748 116371272 40840720 75% /u01
$ /home/oracle> df -k /tmp
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VGExaDb-LVDbSys1
30832636 20808516 8434872 72% /
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
audit_file_dest string /u01/app/oracle/admin/orcl/adump
audit_sys_operations boolean TRUE
audit_syslog_level string
audit_trail string OS
unified_audit_sga_queue_size integer 1048576