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

Machine time change and login/startup problem

Harvinder Singh



We are using 10g on windows and whenever I changes system clock to past,
oracle doesn't startup. And I get errors:

SQL> connect sys/[Email address protected] as sysdba
ORA-12514: TNS:listener does not currently know of service requested in
connect descriptor

SQL> connect / as sysdba
ORA-01041: internal error. hostdef extension doesn't exist

More error like this when try to connect to already running oracle after
time changes:

R:\>sqlplus hs/hs

SQL*Plus: Release - Production on Wed Feb 18 16:06:39 2004

Copyright (c) 1982, 2004, Oracle. All rights reserved.

ORA-28547: connection to server failed, probable Net8 admin error

But if I change clock back to current time it start working again.

What is the workaround to be able to change date to the past date and
still use oracle.


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