https://access.redhat.com/solutions/2316
$ /usr/sbin/lsof | grep deleted ora 25575 data 33u REG 65,65 4294983680 31014933 /oradata/DATAPRE/file.dbf (deleted)
$ echo > /proc/pid/fd/fd_number
$ file /proc/25575/fd/33 /proc/25575/fd/33: broken symbolic link to `/oradata/DATAPRE/file.dbf (deleted)‘ $ echo > /proc/25575/fd/33
原文：https://www.cnblogs.com/buxizhizhoum/p/11889839.html