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


Pedro Espinoza


One of our production users complained that he couldn't connect to the
database. I looked into the listener.log and found the following.

Environment: single instance on solaris sparc 64, 5.8

30-MAY-2007 14:33:31 *
(ADDRESS=(PROTOCOL=tcp)(HOST= * establish *
TMAN * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
 TNS-00517: Lost contact
  Solaris Error: 32: Broken pipe

Note 340089.1 suggests to increase the processes.

I, then, connected to the db using "connect '/as sydba'"

XYZ>show parameter process
ORA-01012: not logged on

I have checked whether oracle processes exist. I did ps -aef | grep
XYZ, and found that all processes were running.

I exit from this session, and then connected '/as sysdba' from local
box, so there is no business of orapw,e tc). When I tried to shutdown
immediate, I got the following:

XYZ> shutdown immediate;

ORA-24324: service handle not initialized
ORA-24323: value not allowed
ORA-00020: maximum number of processes (%s) exceeded

Then, I tried

XYZ> shutdown abort;
ORA-01031: insufficient privileges
XYZ> exit

Next, I connected again. This time, the database allowed me to shutdown abort.

My doubt is: why I got ORA-1031errors, even though I tried to shutdown
as oracle user with group dba.

Thanks, Pedro.