I have found paranoia pays as a dba. I would start by renaming them at the
OS level and restarting the instance to see what happens....
On Tue, May 25, 2021 at 10:51 AM Mark W. Farnham <mwf@xxxxxxxx> wrote:
That seems just fine. Extra paranoid folks (aka operational DBAs) might
run strings on the control file, too.
mwf
*From:* oracle-l-bounce@xxxxxxxxxxxxx [mailto:
oracle-l-bounce@xxxxxxxxxxxxx] *On Behalf Of *Mladen Gogala
*Sent:* Tuesday, May 25, 2021 11:28 AM
*To:* oracle-l@xxxxxxxxxxxxx
*Subject:* Re: Sanity Check Please: Removing Datafiles after Dropping
Tablespace?
Hi Chris, that's not a problem. I don't have 12.1 on my machine any more
but I will demonstrate with 19c. First, let's create tablespace "CHRIS" and
drop it without "including contents and datafiles":
SQL> select file_name from dba_data_files;
FILE_NAME
_____________________________________________________
/opt/oracle/oradata/ORCLCDB/ORCLPDB1/system01.dbf
/opt/oracle/oradata/ORCLCDB/ORCLPDB1/sysaux01.dbf
/opt/oracle/oradata/ORCLCDB/ORCLPDB1/undotbs01.dbf
/opt/oracle/oradata/ORCLCDB/ORCLPDB1/users01.dbf
Elapsed: 00:00:00.561
SQL> create tablespace chris datafile
'/opt/oracle/oradata/ORCLCDB/ORCLPDB1/chris.dbf' size 100M;
Tablespace CHRIS created.
Elapsed: 00:00:00.484
SQL> drop tablespace chris;
Tablespace CHRIS dropped.
Elapsed: 00:00:00.389
SQL>
Now, let's check which data files are in use:
bash-4.2$ fuser -a *.dbf
/*opt/oracle/oradata/ORCLCDB/ORCLPDB1/chris.dbf:*
/opt/oracle/oradata/ORCLCDB/ORCLPDB1/sysaux01.dbf: 2302 2310 2340
2575 2742 2765 2767 2988 3044
/opt/oracle/oradata/ORCLCDB/ORCLPDB1/system01.dbf: 2302 2310 2328
2340 2575 2736 2742 2746 2748 2752 2763 2765 2988
/opt/oracle/oradata/ORCLCDB/ORCLPDB1/temp01.dbf: 2302 2763
/opt/oracle/oradata/ORCLCDB/ORCLPDB1/undotbs01.dbf: 2302 2310 2342 2575
/opt/oracle/oradata/ORCLCDB/ORCLPDB1/users01.dbf: 2302 2310
As you can see, the file /opt/oracle/oradata/ORCLCDB/ORCLPDB1/chris.dbf
doesn't
have any processes associated with it. So, let's remove it and restart the
instance:
bash-4.2$ rm -i chris.dbf
rm: remove regular file ‘chris.dbf’? y
-bash-4.2$ sqlplus / as sysdba
SQL*Plus: Release 19.0.0.0.0 - Production on Tue May 25 11:25:25 2021
Version 19.11.0.0.0
Copyright (c) 1982, 2020, Oracle. All rights reserved.
Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.11.0.0.0
SQL> startup force
ORACLE instance started.
Total System Global Area 4966052456 bytes
Fixed Size 9146984 bytes
Variable Size 2214592512 bytes
Database Buffers 2734686208 bytes
Redo Buffers 7626752 bytes
Database mounted.
Database opened.
SQL> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 ORCLPDB1 READ WRITE NO
SQL>
So, all is well. You can use "fuser -a" and remove the files which do not
have any processes associated with them. With ASM you would have to use
some additional trickery, but that's another story.
Regards
On 5/25/21 9:21 AM, Chris Taylor wrote:
Env :12.1.0.2 x86-64 Linux NON-RAC,NON-ASM
As haste makes waste (or leaves waste as the case may be), I dropped a
tablespace as part of a scheduled maintenance. However, I neglected the
"INCLUDING CONTENTS AND DATAFILES" portion of the drop command.
So now I have a lot of datafiles left on the OS.
I've confirmed that fuser doesn't show any PIDs touching the datafiles.
I *think *I can drop the datafiles straight from the OS now on both the
primary and standby, but need a sanity check here if anyone knows something
different? I'm being careful here in case I've forgotten something.
Thanks,
Chris
--
Mladen Gogala
Database Consultant
Tel: (347) 321-1217
https://dbwhisperer.wordpress.com
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