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



Hi Tom, I appreciate your response , my comments inline

> If you are running in NOARCHIVELOG mode, you *always* have to backup
> your database daily to be able to recover it to when you backed it up -
> you do not get any recovery option other than that.

Yes, I understand that, I do weekly cold backups
> If you are running in NOARCHIVELOG mode and you turn logging on, you
> must perform a backup immediately to be able to perform point in time
> reovery from that point forward.

Ok, at this point I have a cold backup which has objects created with
NOLOGGING (even though the database was in NOARCHIVELOG),
 in other words these segments are "marked" in the dictionary as being
created with LOGGING=N

Q? - from that point on - will recovery *ever* complain about corrupt
blocks which were created *before" the backup?
Note the database is in NOARCHIVE, and at a time in the "future" will
archiving turned on

Q? - How does the segment get marked/reset LOGGING= ? in the
dictionary,or block header?
Im guessing this would be how the problem comes to haunt you. IOW this
is how Oracle would "know" if the segment was affected by NOLOGGING, and
I would think this needed to be reset somehow.

The original poster was surprised how long the problem stayed dormant ,
I'm thinking he must have done backups during that time frame....?

so, my mis understanding is with the dictionary / block header flags

My understanding or your reply is that the database can be rolled
forward from the last backup, which is what I would expect.
Although if I wanted to recover from point in time I would risk this
situation of corrupt blocks.
Using NOLOGGING I could only roll forward from the last backup

> So the lesson learned here is to either create an object in the normal
> way (with archiving enabled) or use the NOLOGGING option and always
> schedule a backup to protect what you just created.