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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
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

_disable_logging=true and ORA-00353 question

Juan Carlos Reyes Pacheco


**important _disable_logging is an advanced parameter and you should
not be set**
Hi please,
in my test of upgrades I was using _disable_logging, to understand
how it works.
I had to do an upgrade from 9.2 to to 10.2.

I'm not thinking in use on production. I only want to understand it.

I enabled it in the upgrade process and disable after the next upgrade step.
Every thing was ok.
Finally once migrated having _disable_logging=false
I run a long script which run correctly and at the end of the script,
I suppose in the moment of a logswitch, I got the following error:

ORA-00354: corrupt redo log block header
ORA-00353: log corruption near block 2 change 105990334 time 05/11/2006 09:06:19
ORA-00312: online log 2 thread 1: 'E:\ORASERP\LOGFILES\LOG_2SERP.ORA'
ORA-00312: online log 2 thread 1: 'D:\ORASERP\LOGFILES\LOG_2SERP.ORA'

'E:\ORASERP\LOGFILES\LOG_2SERP.ORA'; and I received a message the file
don't exists

Why does it happen?
I suppose if I would had done an ALTER SYSTEM SWITCH LOGFILE;
In some moment, this problem wouldn't had happen.

But I can't get it, why if everything was ok, in the moment of switch
it get an error log corrupt.

Thank you :)
Oracle Certified Profesional 9i 10g
Orace Certified Professional Developer 6i

8 years of experience in Oracle 7,8i,9i,10g and developer 6i