All Oracle Error Codes
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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-01034: Oracle Not Available error

Anurag Verma


Run the command "Show parameter log_archive" in a SQLPLUS session in your primary database.
See whether any log_archive_Dest set to Standby.
If set to standby, run
Alter system set log_archive_dest_<number> = '' ;    -- setting to Null
Then run " Alter system switch logfile"
Check again alert log. You should not see the error again.

On 3/13/07, Godwin vincent <godwin.ror@gmail.com> wrote:
Hi all,
          Im getting this ORA-01034 error in my alert lot from a long time even though the database is up and running and even the listener is working correctly. Following is the text from my alert log, which is continuously showing up
ORA-01034: ORACLE not available
Tue Mar 13 10:24:23 2007
Errors in file /u01/app/oracle/admin/DB1/bdump/DB1_arc0_31166.trc:
ORA-01034: ORACLE not available
Tue Mar 13 10:26:58 2007
Errors in file /u01/app/oracle/admin/DB1/bdump/DB1_arc0_31166.trc:
ORA-01034: ORACLE not available
Tue Mar 13 10:39:43 2007
Errors in file /u01/app/oracle/admin/DB1/bdump/DB1_arc0_31166.trc:
ORA-01034: ORACLE not available
Tue Mar 13 11:03:13 2007
Errors in file /u01/app/oracle/admin/DB1/bdump/DB1_arc0_31166.trc:
ORA-01034: ORACLE not available
Tue Mar 13 11:03:59 2007
Thread 1 advanced to log sequence 17000
  Current log# 2 seq# 17000 mem# 0: /u01/oradata/hosting/redo02.log
Tue Mar 13 11:03:59 2007
ARC1: Evaluating archive   log 1 thread 1 sequence 25777
ARC1: Beginning to archive log 1 thread 1 sequence 25777
Creating archive destination LOG_ARCHIVE_DEST_2: '/u04/oradata/DB1/archive/1_25777.dbf'
Creating archive destination LOG_ARCHIVE_DEST_1: '/u05/oradata/DB1/archive/1_25777.dbf'
Tue Mar 13 11:10:00 2007
ARC1: Completed archiving  log 1 thread 1 sequence 25777
Tue Mar 13 11:13:19 2007
Errors in file /u01/app/oracle/admin/DB1/bdump/DB1_arc0_31166.trc:
ORA-01034: ORACLE not available
Tue Mar 13 11:19:27 2007
Errors in file /u01/app/oracle/admin/DB1/bdump/DB1_arc0_31166.trc:
ORA-01034: ORACLE not available
Tue Mar 13 11:28:34 2007
Errors in file /u01/app/oracle/admin/DB1/bdump/DB1_arc0_31166.trc:

I have been getting the above text (ORA-01034) in the alert log since  a long time. I tried to look into this trace file " DB1_arc0_31166.trc" and issued the following to see if there are any ORA errors

$ cat DB1_arc0_3166.trc | grep -v ORA-01034 | grep ORA
for which, i got the following errors
ORA-12541: TNS: no listener
ORA-16058: Standby database instance is not mounted
along with ORA-01034: Oracle Not Available error.  We have a standby database in place, which is down from a long time. The error associated with ORA-01034 in the trace file tells about the standby database, so is this the situation because the standby is down?. The database DB1 is up and running and im able to connect & work on it with out any problem. Any suggestions for any other reasons this error could occur and how actually to diagnose it. Any help would be greatly appreciated.