HTMLDB | htmldb disabled = Duplicate DAD

Question

Hello,
I am very new to htmldb world. I have installed Oracle 10g (Release 2), 10g Enterprise Manger and html db on Fedora Core 3 operating system .
When I tried to start http I get this
Taurus$ ./opmnctl stopall
opmnctl: stopping opmn and all managed processes...
Taurus$ ps -ef | grep http
oracle 31449 3595 0 19:22 pts/3 00:00:00 grep http
Taurus$ ./opmnctl startall
opmnctl: starting opmn and all managed processes...
================================================================================
opmn id=Taurus:6200
0 of 1 processes started.
ias-instance id=standalone
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ias-component/process-type/process-set:
HTTP_Server/HTTP_Server/HTTP_Server
Error
--> Process (pid=31480)
Starten von verwaltetem Prozess nach der maximalen Anzahl der Wiederholungen nicht erfolgreich
Log:
/appl/local/oracle/htmldb/opmn/logs/HTTP_Server~1
Taurus$ vi /appl/local/oracle/htmldb/opmn/logs/HTTP_Server~1
Taurus$
05/11/07 19:22:20 Start process
/appl/local/oracle/htmldb/Apache/Apache/bin/apachectl start: execing httpd
[Mon Nov  7 19:22:21 2005] [crit] mod_plsql: DAD /htmldb disabled => Duplicate DAD
[Mon Nov  7 19:22:21 2005] [crit] mod_plsql: DAD /htmldb disabled => Duplicate DAD
err.log
[Mon Nov  7 19:22:19 2005] [crit] mod_plsql: DAD /htmldb disabled => Duplicate DAD
[Mon Nov  7 19:22:19 2005] [crit] mod_plsql: DAD /htmldb disabled => Duplicate DAD
[Mon Nov  7 19:22:19 2005] [crit] (98)Die Adresse wird bereits verwendet: make_sock: could not bind to address 127.0.0.1 port 7200
[Mon Nov  7 19:22:22 2005] [crit] mod_plsql: DAD /htmldb disabled => Duplicate DAD
[Mon Nov  7 19:22:22 2005] [crit] mod_plsql: DAD /htmldb disabled => Duplicate DAD
[Mon Nov  7 19:22:22 2005] [crit] (98)Die Adresse wird bereits verwendet: make_sock: could not bind to address 127.0.0.1 port 7200
My dads.conf
# ============================================================================
alias /i/ "/appl/local/oracle/htmldb/htmldb/images/"
<Location /htmldb>
SetHandler pls_handler
Order deny,allow
Allow from all
AllowOverride None
PlsqlDatabaseUsername HTMLDB_PUBLIC_USER
PlsqlDatabasePassword xcsvd2
PlsqlDatabaseConnectString Taurus:1521:mySID
PlsqlDefaultPage htmldb
PlsqlDocumentTablename wwv_flow_file_objects$
PlsqlDocumentPath docs
PlsqlDocumentProcedure wwv_flow_file_manager.process_download
PlsqlAuthenticationMode Basic
PlsqlNLSLanguage AMERICAN_AMERICA.UTF8
</Location>
Any ideas?
Thanks,
A. Ha

Answer 1

Hi,
sorry, I had first gotten the impression that you used Oracle Application Server. This is apparently not the case.
First of all let't become clear on the facts:
1) You installed Oracle 10gR2 into /appl/local/oracle/10.2.0
2) You have installed HTMLDB from the companion CD into a separate Oracle Home /appl/local/oracle/htmldb
So far it is all fine.
Some things confuse me a bit. It seems that you have changed the default configuration.
The dad is configured to use /htmldb and not /pls/htmldb as per default.
You have renamed the marvel.conf to conf_orig_marvel.
I don't know what else you might have changed. So troubleshooting is a bit difficult.
Anyway, the error messages indicate the following:
[Mon Nov 7 19:22:19 2005] [crit] (98)Die Adresse wird bereits verwendet: make_sock: could not bind to address 127.0.0.1 port 7200
This means that opmn cannot start the http server since a process is still listening to port 7200. This could either mean another process or not all processed got killed when doing opmnctl stopall.
After you do opmnctl stopall, make sure that all http processes are removed and no other process is listening to port 7200.
[Mon Nov 7 19:22:22 2005] [crit] mod_plsql: DAD /htmldb disabled => Duplicate DAD
This means that you have two declarations of /htmldb included in the configuration.
Either you include the dads /htmldb twice or perhaps you have an additional mapping to /htmldb as being a virtual directory pointing to a directory in the filesystem.
Start from /appl/local/oracle/htmldb/htmldb/Apache/Apache/conf/httpd.conf and check each included file whether you have mapping to /htmldb.
The default mapping to the htmldb DAD during installation is /pls/htmldb anyway.
Also make sure that you set the Oracle environment properly, when starting / stopping the HTMLDB Apache.
Taurus$ echo $ORACLE_HOME
/appl/local/oracle/10.2.0/
This is the ORACLE_HOME for the database, not the ORACLE_HOME for HTMLDB!.
Else revisit the configuration guide for HTML DB.
For the rest of the week I will be off to the German Oracle User Group meeting in Mannheim (DOAG), so if you need further assistance this week you can contact me here: http://www.opal-consulting.de/kontakt.html
Hope that helps,
~Dietmar.