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TNS:could not resolve the connect identifier specified
Backtrace message unwound by exceptions
invalid identifier
PL/SQL compilation error
internal error
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end-of-file on communication channel
TNS:listener unknown in connect descriptor
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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-0214, controlfile updates question

Kevin Closson

2006-08-30

Replies:
 
so, admins create multiplexed CF because one is good, so more must
be better! :-)
 
 
 
 


From: Tuomas Pystynen [mailto:tuomas.pystynen@deepbase.com]
Sent: Wednesday, August 30, 2006 1:34 PM
To: Kevin Closson
Cc: OakTable List
Subject: Re: ORA-0214, controlfile updates question

I agree. After a crash there is no recovery before controlfiles are opened (and ORA-214 is signalled). Oracle can not write atomically to multiple controlfiles.

Some important controlfile updates (such as add datafile) are logged to redo. But it doesn't help here. The redo can not be applied before controlfiles are opened (redo log names are there). I believe redo is applied to controlfiles only during media recovery when using backup controlfile.

Tuomas

Kevin Closson wrote:
 >>>Due bugs that show them in extreme circumstances - why not?
  
(I have to admit though that I haven't seen any corruption 
cases yet where the cause would have been determined as lost 
writes and nothing else).
        

I'm not saying it it impossible, I'm saying that in this
case it is MUCH more likely that Oracle's "transaction"
areound this type of multiplexing is a bit questionable.