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: Cisco PIX firewall

Niall Litchfield


On Tue, 25 Jan 2005 15:31:00 -0500, Jeffrey Beckstrom
> We are using a Cisco PIX firewall version 6.2. Database is running
> Oracle 9i with multithreaded server.
> If we move the web server inside the firewall, then sqlplus connects to
> the database server. If we put the web server outside of the firewall
> then sql*plus gives an ora-12571 error. Our network people tried
> opening all ports on the web server for IP traffic but we still get the
> same error.
> We know it is something with the firewall since depending on if the web
> server is inside or outside of the dmz you can connect. We just can't
> figure out what is wrong with the firewall. Any suggestions would be
> appreciated.

I believe that the PIX firewall needs to be made aware of sqlnet
traffic so that it can mark the sqlnet packets on the way through with
appropriate ip addresses (if you are using NAT). This is all from
memory and I'm on a course until Monday - if you don't get useful
responses by Monday drop me a line and I'll see if I can dig out our
change document that did this on our PIX firewall.

Niall Litchfield
Oracle DBA