Ora-12528 all appropriate instances are blocking new connections

hi,
i get an error 'ora-12528 all appropriate instances are blocking new connections'
i have changed shared_servers parameters. from there itself i get the error

With zero substantive information about your environment, it is impossible to know for sure.
But, if you've just set SHARED_SERVERS=0, for example, and your tnsnames.ora has a line in it that says (SERVER=SHARED), then your client is demanding the use of shared servers which don't exist. You can therefore expect the sort of error you're getting.
The fix is to remove the explicit demand for shared servers in the tnsnames.ora. Just remove the line (or, not quite such good practice, set it to DEDICATED).

Similar Messages

ORA-12528: TNS:listener: all appropriate instances are blocking new connect

Dear All,
I got the following error when use 'STARTUP MOUNT;' in sqlplus
Error
ORA-12528: TNS:listener: all appropriate instances are blocking new connections
I am using Oracle 10 Database and Window XP Operating System
How to solve it.
Please help me
Thanks and Regards,
Fazil
Edited by: user11334489 on Sep 11, 2012 12:41 AM

Wrong forum. Please post your question in the General Database Discussions forum.
Craig...

ORA-12528: TNS:listener: all appropriate instances are blocking new connections

I'm working with OBIEE 11.1.1.5, with Ora DB 11.2.
Suddenly, the OBIEE is not accessible.
The logs showed that the issue is DB connectivity.
When I try to enter directly to the DB via sqlplus I get the error:
/opt/oracle/product/11.2.0/dbhome_1/bin/sqlplus sys@UBI as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Wed Nov 20 13:18:23 2013
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Enter password:
ERROR:
ORA-12528: TNS:listener: all appropriate instances are blocking new connections
I tried restarting server, DB, listener, but nothing helped.
I've Googled and saw that I need to unregister some old connections, which were not closed correctly, i.e. entering DB and delete some records,
but I cannot login to the sqlplus.
I failed login as sys, system, scott - on the same error.
How can I solve this issue?

ls $ORACLE_HOME/dbs
dbs httpFileTransfer.py init.ora lkUBI peerapp_catalog qoe_network_offset.template subscriberUpdate.py
hc_ubi.dat index.html.1 initUBI.ora orapwubi profile.sql spfileubi.ora
padmin@rprt:~> /opt/oracle/product/11.2.0/dbhome_1/bin/sqlplus "/as sysdba"
SQL*Plus: Release 11.2.0.1.0 Production on Wed Nov 20 18:09:04 2013
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup
ORA-48108: invalid value given for the diagnostic_dest init.ora parameter
ORA-48140: the specified ADR Base directory does not exist [/opt/oracle/product/11.2.0/dbhome_1/dbs/<ORACLE_BASE>]
ORA-48187: specified directory does not exist
Linux-x86_64 Error: 2: No such file or directory
Additional information: 1
SQL>

TNS-12528: TNS:listener: all appropriate instances are blocking new connect

Hi all,
May be you remember that i posted connection problem to my database and when checking mi listener log file i found the error TNS-12528 as in the following portion of my alert log file:
05-NOV-2007 11:37:42 * service_died * abdb1 * 12537
05-NOV-2007 11:37:42 * service_died * abdb1 * 12537
05-NOV-2007 11:37:49 * (CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=abdb)(CID=(PROGRAM=E:\mvoucher\bin\SMPPGateways\Transmitter\PyroESMEt.exe)(HOST=MGUTP)(U
SER=SYSTEM))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.175)(PORT=4517)) * establish * abdb * 0
05-NOV-2007 11:37:52 * (CONNECT_DATA=(SID=abdb1)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.204)(PORT=1437)) * establish
* abdb1 * 12505
TNS-12505: TNS:listener does not currently know of SID given in connect descriptor
05-NOV-2007 11:37:55 * (CONNECT_DATA=(SID=abdb1)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.204)(PORT=1440)) * establish
* abdb1 * 12505
TNS-12505: TNS:listener does not currently know of SID given in connect descriptor
05-NOV-2007 11:37:55 * service_update * abdb2 * 0
05-NOV-2007 11:37:56 * (CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=abdb)(CID=(PROGRAM=E:\mvoucher\bin\SMPPGateways\Transmitter\PyroESMEt.exe)(HOST=MGUTP)(U
SER=SYSTEM))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.175)(PORT=4518)) * establish * abdb * 12528
TNS-12528: TNS:listener: all appropriate instances are blocking new connections
05-NOV-2007 11:37:57 * (CONNECT_DATA=(SID=abdb1)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.204)(PORT=1443)) * establish
* abdb1 * 12505
TNS-12505: TNS:listener does not currently know of SID given in connect descriptor
05-NOV-2007 11:37:59 * (CONNECT_DATA=(SID=abdb1)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.204)(PORT=1446)) * establish
* abdb1 * 12505
TNS-12505: TNS:listener does not currently know of SID given in connect descriptor
05-NOV-2007 11:38:01 * (CONNECT_DATA=(SID=abdb1)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.204)(PORT=1449)) * establish
* abdb1 * 12505
Does anybody have an idea about why this error is comming.
Note that we are using oracle 10g in a RAC environment with 02 nodes.
Thanks for your help.
Raitsarevo

I don't use SID in my tnsnames.ora, i use SERVICE_NAME and it's OK. May be someone who have configured iot's tnsnames made it wrong because there consultant installaing new application in our company and may be their tnsnames was wrong and causing that problem. Because in their application it always tries to connect in the database till connection will be established and may be it increase the database session number.
Isn't it and when session max number is reached may be database connection will hang.
Correct me if it is the case, we will have a look in their applivcation tnsnames configuration.
Thanks
regards
Raitsarevo

TNS: listener: all appropriate instances are blocking new connections.

Hello,
when I start up my freshly installed developerday VB appliance, and try to connect to the database, following the tutorial in "Hands-on lab" - "SQL developer", as well as with any other attempt, the connection would not establish. I always get a message ORA-12528: TNS: listener: all appropriate instances are blocking new connections.
I cannot find any Readme or Tutorial which explains this appearance.
Weird, that obviously nobody else runs into this problem, otherwise this forum would be full of it. But isn't the VB appliance byte-for-byte the same for anybody?
Any ideas?
Edited by: pestw2000 on 23.12.2010 01:06

Hi Marco, thanks for replying. You can read the OS version from the lsnctl output. The OS of the host system of the Virtual Box is Windows7 64-bit. Hmm... "HOST=0.0.0.0" looks suspicious, doesn't it?
Wolfgang
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                24-DEC-2010 01:31:40
Uptime                    0 days 0 hr. 1 min. 45 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
+(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=1521)))+
+(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=80))(PROTOCOL_STACK=(PRESENTATION=HTTP)(SESSION=RAW)))+
+(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=21))(PROTOCOL_STACK=(PRESENTATION=FTP)(SESSION=RAW)))+
Services Summary...
Service "orcl" has 1 instance(s).
Instance "orcl", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully

RMAN: -TNS:listener: all appropriate instances are blocking new connections

Hi all,
we are trying the some rman recoveries on test machine when we are trying to restore the conrolfile thru rman
what they have mentioned in docs id shutdown abort of the target database and then startup no mount thru rman then restore controlfile and open the database.
Now what i want to know is after shutdown i can t able to connect thru rman target since it is showing
TNS:listener: all appropriate instances are blocking new connections
how can i connect when thru rman in this stage when the database is down when i m trying to startup command thru RMAN prompt also it throw me the same error. for this i cant move further can pls anybody help this..
Thanks
M.Murali..

D:\>lsnrctl services
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 20-MAY-2009 16:17:58
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
Services Summary...
Service "BKPRMANXDB" has 1 instance(s).
Instance "bkprman", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1002 state:ready
DISPATCHER <machine: INP1MFDDB, pid: 936>
(ADDRESS=(PROTOCOL=tcp)(HOST=INP1MFDDB)(PORT=1826))
Service "BKPRMAN_XPT" has 1 instance(s).
Instance "bkprman", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:90 refused:0 state:ready
LOCAL SERVER
Service "MFUNDXDB" has 1 instance(s).
Instance "mfund", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1002 state:ready
DISPATCHER <machine: INP1MFDDB, pid: 1876>
(ADDRESS=(PROTOCOL=tcp)(HOST=INP1MFDDB)(PORT=1054))
Service "MFUND_XPT" has 1 instance(s).
Instance "mfund", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:25 refused:0 state:ready
LOCAL SERVER
Service "bkprman" has 1 instance(s).
Instance "bkprman", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:90 refused:0 state:ready
LOCAL SERVER
Service "mfund" has 1 instance(s).
Instance "mfund", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:25 refused:0 state:ready
LOCAL SERVER
The command completed successfully
Edited by: Balamurali on May 20, 2009 4:33 PM

ORA-12528: TNS: listener: all appropriate instances are blocking new connec

Hi this is kumar,
i am getting the below error .
ORA-12528: TNS: listener: all appropriate instances are blocking new connections
please find my alertlog file ,in alert log file we are getting opertaion timed out.
TNS-12535: TNS:operation timed out
ns secondary err code: 12560
nt main err code: 505
TNS-00505: Operation timed out
nt secondary err code: 238
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.254.254.32)(PORT=1599))

Hi,
thank you for your quick responce.
$ srvctl config scan_listener
SCAN Listener LISTENER_SCAN1 exists. Port: TCP:1526
SCAN Listener LISTENER_SCAN2 exists. Port: TCP:1526
SCAN Listener LISTENER_SCAN3 exists. Port: TCP:1526
$ lsnrctl status LISTENER_SCAN1
LSNRCTL for HPUX: Version 11.2.0.2.0 - Production on 22-APR-2013 20:38:33
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
STATUS of the LISTENER
Alias LISTENER_SCAN1
Version TNSLSNR for HPUX: Version 11.2.0.2.0 - Production
Start Date 30-JAN-2013 01:46:21
Uptime 82 days 18 hr. 52 min. 12 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/11.2.0/grid/network/admin/listener.ora
Listener Log File /u01/app/11.2.0/grid/log/diag/tnslsnr/dccdb01/listener_scan1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.44.83.111)(PORT=1526)))
Services Summary...
Service "instance" has 2 instance(s).
Instance "instance1", status READY, has 1 handler(s) for this service...
Instance "instance2", status READY, has 1 handler(s) for this service...
Service "instanceXDB" has 2 instance(s).
Instance "instance1", status READY, has 1 handler(s) for this service...
Instance "instance2", status READY, has 1 handler(s) for this service...
Service "instance" has 2 instance(s).
Instance "instance1", status READY, has 1 handler(s) for this service...
Instance "instance2", status READY, has 1 handler(s) for this service...
Service "instanceXDB" has 2 instance(s).
Instance "instance1", status READY, has 1 handler(s) for this service...
Instance "instance2", status READY, has 1 handler(s) for this service...
Service "instanceoltp" has 2 instance(s).
Instance "instance1", status READY, has 1 handler(s) for this service...
Instance "instance2", status READY, has 1 handler(s) for this ser
$
ABCD =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = dccdb-cluster-scan)(PORT = 1526))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ABCD)
ADCDE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = dccdb-cluster-scan)(PORT = 1526))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ADCDE)
we didn't do any changes from the database side,now only my user had raised a complaint

ORA-12528: TNS:listener: all approriate instances are blocking new connecti

HI all ,
i am getting this error while log on on database 10g on operating system is WINDOW XP
ORA-12528: TNS:listener: all approriate instances are blocking new connection
Please GUide me how to resolve this issue
Thanks And regards
Vikas Singhal

vikas singhal wrote:
HOw to find listener to see if the service is in BLOCKED state:
Thanks And Regards
Vikas SinghalYou can use lsnrctl services as
C:\Documents and Settings\chinar>lsnrctl services
LSNRCTL for 32-bit Windows: Version 10.2.0.2.0 - Production on 13-JUL-2010 14:30
:26
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=chinar.bank.local)(PORT=
1521)))
Services Summary...
Service "+ASM_XPT" has 1 instance(s).
Instance "+asm", status BLOCKED, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0 state:ready
         LOCAL SERVER
Service "+asm" has 1 instance(s).
Instance "+asm", status BLOCKED, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0 state:ready
         LOCAL SERVER
Service "TEST" has 2 instance(s).
Instance "TEST", status UNKNOWN, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:387 refused:0
         LOCAL SERVER
Instance "test", status RESTRICTED, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0 state:ready
         LOCAL SERVER
Service "TESTXDB" has 1 instance(s).
Instance "test", status RESTRICTED, has 1 handler(s) for this service...
    Handler(s):
      "D000" established:0 refused:0 current:0 max:1002 state:ready
         DISPATCHER <machine: CHINAR, pid: 7472>
         (ADDRESS=(PROTOCOL=tcp)(HOST=chinar.bank.local)(PORT=4790))
Service "TEST_XPT" has 1 instance(s).
Instance "test", status RESTRICTED, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0 state:ready
         LOCAL SERVER
Service "chinar.bank.local" has 1 instance(s).
Instance "SB", status UNKNOWN, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0
         LOCAL SERVER
The command completed successfully
C:\Documents and Settings\chinar>

Error TNS:listener: all appropriate instances are blocking new con...

Hi,
I try connect to database "mariusz" using sql developer. When I try do this I get error ORA-12528... I try shutdown and startup database and nothing. I chceck status using lsnrctl and there I have : mariusz state blocked. I try LSNRCTL> stop LSNRCTL> start but it didn't help.

status
C:\>lsnrctl status
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 28-LIP-2012 16:25
:02
Copyright (c) 1991, 2010, Oracle. All rights reserved.
ú╣czenie z (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STAN NASúUCHU
Alias LISTENER
Wersja TNSLSNR for 32-bit Windows: Version 11.2.0.1.0 - Produc
tion
Data rozpoczŕcia 28-LIP-2012 15:11:13
Czas dzia│ania 0 dni 1 h 13 min. 51 s
Poziom ťladu off
Zabezpieczenie ON: Local OS Authentication
SNMP OFF
Plik parametrˇw nas│uchu F:\app\Mariano\product\11.2.0\dbhome_1\network\admin\
listener.ora
Plik dziennika nas│uchu f:\app\mariano\diag\tnslsnr\mariusz\listener\alert\log.x
ml
Nas│uch punktˇw ko˝cowych - podsumowanie...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Podsumowanie us│ug...
Us│uga "CLRExtProc" ma liczbŕ instancji rˇwn╣ 1.
Instancja "CLRExtProc", stan UNKNOWN, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs
│ugi...
Us│uga "mariusz" ma liczbŕ instancji rˇwn╣ 1.
Instancja "mariusz", stan BLOCKED, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs│ug
i...
Us│uga "orcl" ma liczbŕ instancji rˇwn╣ 1.
Instancja "mar", stan READY, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs│ugi...
Us│uga "user" ma liczbŕ instancji rˇwn╣ 1.
Instancja "user", stan READY, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs│ugi...
Us│uga "userXDB" ma liczbŕ instancji rˇwn╣ 1.
Instancja "user", stan READY, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs│ugi...
Polecenie zako˝czone powodzeniem
service
C:\>lsnrctl service
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 28-LIP-2012 16:27
:00
Copyright (c) 1991, 2010, Oracle. All rights reserved.
ú╣czenie z (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
Podsumowanie us│ug...
Us│uga "CLRExtProc" ma liczbŕ instancji rˇwn╣ 1.
Instancja "CLRExtProc", stan UNKNOWN, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs
│ugi...
Procedura(-y) obs│ugi:
"DEDICATED" ustalono:0 odmˇwiono:0
LOCAL SERVER
Us│uga "mariusz" ma liczbŕ instancji rˇwn╣ 1.
Instancja "mariusz", stan BLOCKED, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs│ug
i...
Procedura(-y) obs│ugi:
"DEDICATED" ustanowiono:0 odmˇwiono:0 stan:ready
LOCAL SERVER
Us│uga "orcl" ma liczbŕ instancji rˇwn╣ 1.
Instancja "mar", stan READY, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs│ugi...
Procedura(-y) obs│ugi:
"DEDICATED" ustanowiono:1 odmˇwiono:0 stan:ready
LOCAL SERVER
Us│uga "user" ma liczbŕ instancji rˇwn╣ 1.
Instancja "user", stan READY, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs│ugi...
Procedura(-y) obs│ugi:
"DEDICATED" ustanowiono:1 odmˇwiono:0 stan:ready
LOCAL SERVER
Us│uga "userXDB" ma liczbŕ instancji rˇwn╣ 1.
Instancja "user", stan READY, ma dla tej us│ugi 1 procedur(-ŕ, -y) obs│ugi...
Procedura(-y) obs│ugi:
"D000" ustalono:0 odmˇwiono:0 bie┐╣ce:0 maks.:1022 stan:ready
DISPATCHER <machine: MARIUSZ, pid: 2892>
(ADDRESS=(PROTOCOL=tcp)(HOST=mariusz)(PORT=1051))
Polecenie zako˝czone powodzeniem
C:\>

ORA-12526: TNS:listener: all appropriate instances are in restricted mode

Hi all,
I am trying to connect to Oracle10.2.0.2 in solaris9 as
conn sys/password@dbname as sysdba
but after this attempt it showing
ORA-12526: TNS:listener: all appropriate instances are in restricted mode
but if i connect like this
conn sys/password as sysdba
it works.
Can some one give me the solution for the same?
Thanks
Vipin

Hi,
When you want to connect to database there are majorly two kinds of protocols are involve
1. TCP and
2. IPC
when you are talking about <username>/<password>@<servername > then though you are on same server you are refering to TCP protocol and when you are talking about <username>/<password> then you are refering to IPC protocol
now here when you are going to connect to your database through
conn sys/password as sysdba
its working fine because you are using IPC and if you connect through
conn sys/password@dbname as sysdba
it will show you error because you are using Listener TCP.
So i think that you need to check your listener status and database status both and give the output.
Thanks
Pruthiv

ORA-12526 : TNS Listener : all appropriate instances are in restricted more

I have configured configuration manager to listen to port 1610. When i try connecting to the database i get the above error. If i pass the configuration manager and use 1521 of the listener i can connect. The database is 10gR2.
The old data files were moved from a previous release . I had to open the database with the upgrade option.
Please let me know if any one has any idea about how we can get rid of this. Did not find much on metalink.

Is listener started successfully after changing the port to 1621?
did you change the port number in tnsnames.ora of the client?
Regards
Srinath

TNS Listner blocking new connections

Hai,
I am in the process of creating a standby database. In the process at one point i had to do the following.
sql>shutdown immediate;
sql>startup mount;
I got the following error.
ORA-12528: TNS:listener: all appropriate instances are blocking new connections.
Please help.
Regards,
Vinoth V

This forum is for Forms questions. You should ask your question on the database forum.
Regards,
Robin Zimmermann.

All Pipe Instances are Busy

I am running an Oracle Server 7.3.3.0.0 on an Windows NT4.0 server.
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When I try to start an additional Oracle instance, I get the message "Could not start the service on xxxxxx. Error 0231: All pipe instances are busy". If I shut down one of the currently running instances, I can start another one, I just can't go over a certain total number of these services.
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Can admin server be shutdown after all managed instances are started?

Hi all,
I'll like to ask, can the admin instance be shutdown after I have started all the managed instances? I'll restarted the admin instance whenever I need to preform admin duties, like application redeployment, configuration of the domain.
I reckon the answer is yes. But I'll like to know will my cluster still function? ie is there clustering function after I shutdown the admin instance?

Hi,
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You will not be able to start any new managed server instance when the admin server is down, unless the managed server is starting in MSI mode.
Regards.

Is it possible to access nominated websites only, so all other sites are blocked with FireFox?

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See for info: [https://support.mozilla.org/en-US/kb/Parental%20controls Parental controls]
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Ora-12528 all appropriate instances are blocking new connections

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