All Oracle Error Codes
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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: query slow in 9i, but not slow in 8i

Jamadagni, Rajendra


removing redundant "distinct" might help in this query too ...

Rajendra dot Jamadagni at nospamespn dot com
All Views expressed in this email are strictly personal.
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-----Original Message-----
Guang Mei wrote:

> I understand that the cost value does not mean anything. But from my
> experience, when I see a query's cost from explain plan reaches six
> digits, usually something is not right.
> Anyway the actual query has much more stuff in it. The sql I showed in my
> orginal post was only part of it and that was the part that slowed the thing down.
> I can not run the sql on 9i now since they are other stuff running. But
> the orgianl complex query took 20 minutes to finish on 8i, and the
> exact query produced this in 9i's alert log file:
> ORA-01555 caused by SQL statement below (Query Duration=199335 sec, SCN:
> 0x0000.01db218e):
> Sun Feb 29 23:20:46 2004
> select distinct accession, id
> from   (
> select distinct to_char(PID) accession, identifier.ID
> from   mt.genbankinfo, mt.seqtable, mt.identifier
> where  seqtable.ID = genbankinfo.SeqtabID
>      and   seqtable.GeneID = identifier.GeneID
>      and   PID is not null
>      and   identifier.type != 'A'
>      and   identifier.speciesid in
> (24,31,2,19,18,17,23,21,27,32,20,34,30,22,25,26,28,29)
>      and   nvl(seqtable.valid, 'Y') != 'N'
> union all
> select distinct upper(strings.strtok(protein_id, '.')) accession,
>      identifier.id
> from   mt.genbankinfo, mt.seqtable, mt.identifier
> where  seqtable.ID = genbankinfo.SeqtabID
>      and   seqtable.GeneID = identifier.GeneID
>      and   protein_id is not null
>      and   identifier.t
> .....
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