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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

9i : ORA-00020: maximum number of processes (%s) exceeded

Guang Mei



In 8i, when I got the above error, I always could launch svrmgrl, connected
as intenal and bounce the DB. Now in 9i without svrmgrl, how do we bounce
the db if we have the above error?

I did the following test on a 9204 db on Solaris 9:

1. I set up processes=12 in init.ora, and started the db, everything is OK.
ps -ef|grep ora_ gave me:

oracle 9209   1 0 13:59:20 ?     0:00 ora_pmon_YPD
oracle 9217   1 0 13:59:21 ?     0:01 ora_smon_YPD
oracle 9211   1 0 13:59:20 ?     0:00 ora_dbw0_YPD
oracle 14801 14800 0 15:44:56 pts/3   0:00 ps -ef
oracle 9223   1 0 13:59:21 ?     0:01 ora_qmn0_YPD
oracle 14800 14787 0 15:44:56 pts/3   0:00 grep oracle
oracle 9215   1 0 13:59:21 ?     0:02 ora_ckpt_YPD
oracle 9219   1 0 13:59:21 ?     0:00 ora_reco_YPD
oracle 9213   1 0 13:59:21 ?     0:02 ora_lgwr_YPD
oracle 9221   1 0 13:59:21 ?     0:00 ora_cjq0_YPD

2. I opened two seperated sql sessions, connected as regular user. No
problem. So I left them idle.

3. When I tried the 3rd session, I got

essex$ sqlplus user/password

SQL*Plus: Release - Production on Wed Feb 25 15:46:31 2004

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

ORA-00020: maximum number of processes (%s) exceeded

Enter user-name:
ORA-01017: invalid username/password; logon denied

Enter user-name:
ORA-01017: invalid username/password; logon denied

SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus
essex$ sqlplus '/ as sysdba'

SQL*Plus: Release - Production on Wed Feb 25 15:46:57 2004

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

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

I can not shut down the DB. The other two sessions are still working as
normal. I don't want to do "kill -9" to another sqlplus connection if I
don't have to. Do I have another choice if I want to bounce the db?



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