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tail -f on ACFS filesystem failed with 'tail: unrecognized file system type 0x61636673' (Doc ID 2098447.1)

Last updated on SEPTEMBER 16, 2021

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.


Getting the below error when trying to use tail -f on a file on ACFS filesystem

'tail: unrecognized file system type 0x61636673'


# tail -f alert_TEST3.log
ns main err code: 12535

TNS-12535: TNS:operation timed out
ns secondary err code: 12560
nt main err code: 505

TNS-00505: Operation timed out
nt secondary err code: 110
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=XX.XX.X.XX)(PORT=58310))
tail: unrecognized file system type 0x61636673 for ‘<Database Trace directory>/alert_TEST3.log’. please report this to reverting to polling


 Using 'tail' version 8.22


# tail --version

tail (GNU coreutils) 8.22
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

[root@zurpdb03 ~]# rpm -qa | grep coreutils


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