this is a follow up from this question.
Let me start by saying that i am NOT a DBA, so i'm really really lost with this.
A few weeks ago, we lost contact with one of our SID'S.
All the other services are working, but this one in particular is not.
What we got was this message when trying to connect
ORA-01033: ORACLE initialization or
shutdown in progress
An attempt to alter database open ended up in
ORA-01157: cannot identify/lock data file 6 - see DBWR trace file
ORA-01110: data file 6: '/u01/app/oracle/oradata/xxx/xxx_data.dbf'
I tried to shutdown / restart the database, but got this message.
Total System Global Area 566231040 bytes
Fixed Size 1220604 bytes
Variable Size 117440516 bytes
Database Buffers 444596224 bytes
Redo Buffers 2973696 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 6 - see DBWR trace file
ORA-01110: data file 6: '/u01/app/oracle/oradata/xxx/xxx_data.dbf'
When all continued the same, I erased the dbf files (rm xxx_data.dbf xxx_index.dbf), and recreated them using touch xxx_data.dbf.
I also tried to recreate the tablespaces using
`CREATE TABLESPACE DATA DATAFILE XXX_DATA.DBF`
and got
Database not open
As I said, i don't know how bad this is, or how far i'm from gaining access to my database (well, to this SID at least, the others are working).
I would imagine that a last resource would be to throw everything away, and recreating it, but I don't know how to, and I was hoping there's a less destructive solution.
Any help will be greatly appreciated .
Thanks in advance.
Best Answer
Deleting the dbf files pretty much destroyed your database. You're going to need some expert assistance to have any hope of using the existing database.
You will need to restore from a backup. You do have a backup, right?
If you don't have a backup, then you will need to recreate the DB from the beginning, and import the data from another instance.