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: Snapshot too old

Mladen Gogala



On 10/15/2006 09:02:48 PM, Dean Paul wrote:
> Hi,
> I've been noticing "ORA-01555 caused by SQL statement below (Query
> Duration=33219 sec, SCN: 0x0000.5c80a509): "
> i changed undo_retention 16000 and undo tablespace is having enough space.
> Any suggestions are welcome.
> The table which we are running is having 39 millions of records.
> Thx

Might I inquire what in the world has motivated you to set the undo retention to 16000
when query duration was reported as 33219 seconds at the moment of error? The meaning
of undo retention is the number of seconds that a query can execute without receiving
ORA-1555. I would have set the maximum query duration to 65536.
Worse yet, you should have set undo retention to a nice round number, something like
16384, definitely not 16000. Remember, there are only 10 types of people: those who
understand binary and those who do not.

Mladen Gogala