Can I Restore data from ORACLE datafiles folder? - oracle

Question

my server had been attacked by a ransomware .rapid and all my data had been encrypted , luckily for me the oracle home folder is not encrypted - yet - and most of the files including the datafiles folder and tablespaces are still accessible
Can any One please tell me how to recover my database objects?
no backup is available , only oracle home folder -most of it-
EDIT :
The System is broken , I am trying to know witch files to collect and copy that will enable me to recover my database files from another system
when I try to log into sqlplus throw cmd I get the following error :
'sqlplus' is not recognized as an internal or external command ,
operable program or batch file.
Blockquote
EDIT :
FILES THAT I STILL HAVE ACCESS TO - NOT ENCRYPTED -

Answer 1

Okay. If you can find an init.ora file on your server, that's the PFILE - initialization parameter file - that's the last thing missing to easily copy your database to a new server. If you can't find it, that's ok - it'll just be a little harder. As long as you have the datafiles, you can eventually get your database back.
Basically, you'll want to follow steps 2-8 in the link I posted. You can also find some helpful info in the Oracle guide to manually creating a database in Windows. I'll walk you through them.
Shutdown your old database (if it's still running). This will make sure your datafiles are in a consistent state for copying. Probably stopping the Windows Service would be the easiest way to do that if you can't access sqlplus.
Copy the data to your new server. I'm assuming it'll be in the same location, D:\app\Administrator\oradata\VTC\
Make a copy of the control file CONTROL01.CTL and name it create_db.sql (EDIT: I was assuming that this was a backup to trace ascii version of the control file, but it sounds like this is the binary file)
Edit create_db.sql. Where it says CREATE CONTROLFILE REUSE DATABASE "MY_DB" NORESETLOGS, change it to CREATE CONTROLFILE SET DATABASE "MY_DB" RESETLOGS. Make note of whatever "MY_DB" is - this is your database name. Most people make it the same as the SID. I normally do RESETLOGS which throws out the old redo logs, but you could try keeping them with NORESETLOGS if that works for you.
Remove or comment out the lines that say RECOVER DATABASE and ALTER DATABASE OPEN;. Make sure the paths for the datafiles and logfiles look correct. Save the file.
If you couldn't find your init.ora to copy, I think this very minimal one will work for you, although you'll want to fix your memory settings later. Create it in the same folder.
DB_NAME=MY_DB
INSTANCE_NAME=MY_DB
SERVICE_NAMES=MY_DB
CONTROL_FILES = ("D:\app\Administrator\oradata\VTC\CONTROL01.CTL")
DB_FILES=100
Create an Oracle Database Windows Service. Afterwards check Services to make sure it's running.
oradim -NEW -SID MY_DB -STARTMODE manual -PFILE "D:\app\Administrator\oradata\VTC\init.ora"
Log in to your new Oracle instance as SYSDBA. There's no database yet.
cd D:\app\Administrator\oradata\VTC\
set ORACLE_SID=MY_DB
sqlplus / as sysdba
Create the database, using the control file from the old server as a script.
#create_db.sql
If everything comes back OK, run:
alter database open