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ORA-12528: TNS:listener: all appropriate instances are blocking new connections [message #462064]

Tue, 22 June 2010 11:22

TechMonkey
Messages: 14
Registered: June 2010

Junior Member

Installing Oracle XE 10.2.0.4 on CentOS 5.4. (VM running on ESX vSphere 4.0, cloned from existing VM. 2G RAM, 2G swap.)

Problem: Can't connect to DB.

(Yes, I've searched hither and yon, which is where I found many of the troubleshooting steps, but this is the first time I've knowingly breathed the same air as an Oracle DB, and so have no idea how to proceed.)

[root@spacewalk ~]# sqlplus system@xe
SQL*Plus: Release 10.2.0.4.0 - Production on Tue Jun 22 08:07:50 2010 Copyright (c) 1982, 2007, Oracle. All Rights Reserved. Enter password: ERROR: ORA-12528: TNS:listener: all appropriate instances are blocking new connections

[root@spacewalk spaceinstall]# /etc/init.d/oracle-xe restart
Shutting down Oracle Database 10g Express Edition Instance.
Stopping Oracle Net Listener.

Starting Oracle Net Listener.
Starting Oracle Database 10g Express Edition Instance.

[root@spacewalk spaceinstall]# /etc/init.d/oracle-xe status

LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 22-JUN-2010 08:24:36

Copyright (c) 1991, 2005, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 21-JUN-2010 21:58:49
Uptime 0 days 0 hr. 0 min. 9 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Default Service XE
Listener Parameter File /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/network/admin/listener.ora
Listener Log File /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC_FOR_XE)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=spacewalk.mydomain.tld)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "XE" has 1 instance(s).
Instance "XE", status BLOCKED, has 1 handler(s) for this service...
Service "XE_XPT" has 1 instance(s).
Instance "XE", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully
[root@spacewalk spaceinstall]#

How I got here:

Used guide at (Can'tPostLinksYet)wiki.centos.org/HowTos/PackageManagement/Spacewalk as that is why I'm installing it.

Not knowing any better, I first installed the 11.x versions, no configuration, then saw I could still get the referenced 10.2.x. Oracle docs say rpm -e will completely remove all settings, which is what I wanted. Installed 10.2.x, everything looked fine until I got to the testing oracle part:

Realized that the old hostname was still in defined in "localhosts", fixed that. The GUI start/stop tools gave errors about root not being in DBA group, so added it to said group.

I've looked at oracle-forums for related errors, and so tried defining ORACLE_BASE (/usr/lib/oracle/xe/app/oracle/), ORACLE_HOME(/usr/lib/oracle/xe/app/oracle/product/10.2.0/) and ORACLE_SID (XE). I've tried starting the DB under the 'oracle' user. Quadruple-checked /etc/tnsnames.ora. Cross-referenced (CantPostLinksYet)fedorahosted.org/spacewalk/wiki/HowToInstall.

Next Steps:
No idea. I'm completely new to Oracle, so any info I've missed, or hints on where to start would be appreciated.

It would be really nice to get this working, as the patch management is one of the main barriers to us adopting CentOS vs. Redhat. (We're a small school.)