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: ORA-1578...block corrupted...error is normal...a block...had a NOLOGGING...operation performed against

Mercadante, Thomas F





You actually are reinforcing my opinion.


Yes, we can do what you suggest – just backup the database files that we loaded.  But why do it that way?  Why have a backup policy for the entire database that may say we backup the entire database daily or ever other day, or just the archive logs in between a full backup, and then change the policy to say – oh wait a minute – we are going to just reloaded these two tables so I’m not going to enforce logging but I’ll do a special backup to cover my backside.


Why in the world would we want to do business this way?  To save time?


I guess at some sites we (DBA’s) may be forced into this position by management.  But I would argue strongly that these practices have a higher chance of data loss than just running things normally.  


What does Gartner say is the leading cause of data loss?  Human decisions – not hardware failure.


I guess I’m not risk tolerant.




From: Jared Still [mailto:jkstill@gmail.com]
Sent: Monday, August 22, 2005 5:05 PM
To: Mercadante, Thomas F (LABOR)
Cc: cmarquez@collegeboard.org; oracle-l@freelists.org
Subject: Re: ORA-1578...block corrupted...error is normal...a block...had a NOLOGGING...operation performed against



On 8/22/05, Mercadante, Thomas F (LABOR) <Thomas.Mercadante@labor.state.ny.us> wrote:

I was thinking about this whole topic over the weekend.  It just affirms my feeling that using the NOLOGGING option needs to be used judiciously.  And I question how much time we are saving here.

Quite a bit of time actually.  Try timing a bulk load operation with and without logging.


If the total time to reload using NOLOGGING and a total backup is less than a reload with LOGGING and no backup, then don't use it.

You don't need a complete database backup, just the datafiles containing the  nologging objects.


Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist