All Oracle Error Codes
Oracle DBA Forum

Frequent Oracle Errors

TNS:could not resolve the connect identifier specified
Backtrace message unwound by exceptions
invalid identifier
PL/SQL compilation error
internal error
missing expression
table or view does not exist
end-of-file on communication channel
TNS:listener unknown in connect descriptor
insufficient privileges
PL/SQL: numeric or value error string
TNS:protocol adapter error
ORACLE not available
target host or object does not exist
invalid number
unable to allocate string bytes of shared memory
resource busy and acquire with NOWAIT specified
error occurred at recursive SQL level string
ORACLE initialization or shutdown in progress
archiver error. Connect internal only, until freed
snapshot too old
unable to extend temp segment by string in tablespace
Credential retrieval failed
missing or invalid option
invalid username/password; logon denied
unable to create INITIAL extent for segment
out of process memory when trying to allocate string bytes
shared memory realm does not exist
cannot insert NULL
TNS:unable to connect to destination
remote database not found ora-02019
exception encountered: core dump
inconsistent datatypes
no data found
TNS:operation timed out
PL/SQL: could not find program
existing state of packages has been discarded
maximum number of processes exceeded
error signaled in parallel query server
ORACLE instance terminated. Disconnection forced
TNS:packet writer failure
see ORA-12699
missing right parenthesis
name is already used by an existing object
cannot identify/lock data file
invalid file operation
quoted string not properly terminated

Re: corrupt datafile

Michael Thomas


Hi Terry,

I've read all the other list reponses. Suggestion?
Look for partial exports to help rebuild portions of
the lost tablespace(s)? What a mess.

You could also suggest they immediately attempt to
prevent similar/further hardware failures at the site,
unless its proven to be a singular disk system
failure. You might help with risk analysis of their
other (undamaged) databases and files, or help get
some answers from their SA/DBA/etc (new or old).
Preventing further issues can save the day after a
single data loss.

They should be willing to listen based on (1) how much
they value their data, or (2) how much the IT
department value their jobs.

Good luck, I hope it works out for you.


Mike Thomas

PS: Ask the IT director if he/she has read what's in
envelope three. Just kidding. ;-)

(You know the answer: "Make three envelopes")

--- Terry Sutton <terrysutton@(protected):
> A new client has a serious corruption error. During
> a hot backup (not RMAN) Thursday morning it was
> discovered that a datafile was corrupted on the
> disk. When the database is started up, the
> following error occurs:
> Any ideas on what they can do? I can't think of
> anything (other than going back to an export they
> have from 6 months ago, which seems to be the only
> historical backup they have).
> --Terry

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