OS Storage not release after move data file in Oracle 12c

Question

Today I try to move oracle data file online as we know that is a capability from Oracle 12c. But after Im moving some data file, why my mount point still give me 100% of usage?

[oracle@DB myserver]$ df -h /oracle/oradata1/
Filesystem                           Size  Used Avail Use% Mounted on
/dev/mapper/vg_oradata1-lv_oradata1  296G  281G   21M 100% /oracle/oradata1
[oracle@DB myserver]$
[oracle@DB myserver]$ du -sh /oracle/oradata1/
151G    /oracle/oradata1/

it supposed to be I have more than 100GB free space in my /oradata1

I also check the data file in the old mount point oradata1 already moved to oradata2. But why my OS(rhel 6.5) Storage not releasing the size?

Can someone give me some clue for this?

thanks in advance

Answer 1

I found the answer from another forum and redhat

https://access.redhat.com/solutions/2316

lsof and find the pid.

Thanks