Oracle HTTP Server and mod_plsql

Question

Hi there,
I have a problem using HTML DB on a small network. LAN consists of two computers with Windows XP Professional, Service Pack 1. Server has two NIC. One connected to the local internet provider (PPPoE) with TCP/IP set to "Obtain an IP address automatically" and second network adapter (for the LAN) with TCP/IP address 192.168.0.2. Second computer has NIC with IP 192.168.0.3. The server is set with HTML DB 2.0. There is NO ANY problem if I work on it as stand alone computer - second network adapter disable!
The problem arises if I connect the second computer and then start HTML DB by http://localhost:7777/…"503 the service is temporary unavailable", emagent is down, DBconsole service is not active anymore, etc. Apache or Oracle HTTP Server is up.
I have found, after several days of troubleshooting, that the problem might be in httpd.config file. If somebody have experience in similar networks or Oracle HTTP Server settings please, give me advice or send httpd.conf file as an example.
Please help me!
Konstantin

Answer 1

Hi,
If I disable the network adapters and restart the computer, then connect to the HTML DB or my application, everything is OK. Then enable connection and I can work from both computers!
This is listener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = KONCOMP)(PORT = 1521))
This is tnsnames.ora
KONSTA10 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = koncomp)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = KONSTA10)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
The dad.conf is empty because I am using marvel.conf. I just checked the rules to build such file. Listener uses as host name - computer name (in my case koncomp), but in all config files Oracle HTTP Server uses name localhost or 127.0.0.1. That is the reason for SYSMAN to make too separate folders in Oracle home named LOCALHOST_instancename and hostname_instanceename.
One error from emagent.log
It goes down all the times when the problem arises.
2005-12-05 15:11:58 Thread-1996 ParseError: File=stream, Line=4, Msg=Missing value for ARG in RemoteOperationArgument (01006)
An error from sqlnet.log
Fatal NI connect error 12541, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=koncomp)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=KONSTA10)(CID=(PROGRAM=C:\oracle\product\10.2.0\db_1\jdk\jre\bin\java.exe)(HOST=KONCOMP)(USER=Konsta))))
VERSION INFORMATION:
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 10.2.0.1.0 - Production
Time: 08-ДЕК. -2005 20:31:09
Tracing not turned on.
Tns error struct:
ns main err code: 12541
TNS-12541: TNS:no listener
ns secondary err code: 12560
nt main err code: 511
TNS-00511: No listener
nt secondary err code: 61
nt OS err code: 0
Moreover in listener.log LISTENER is tried to connect to 127.0.0.1 and to 192.168.1.2 which is the second network adapter.
From Database Control, then Management Services and Repository, and Agent there are one agent and 4 targets. I found there several Metric erros.
Agent to Agent (Agent Process Statistics)
em_result=3696|0.00|14204|20384|1.94||751|12|14204|20384 Terminating on signal SIGTERM(15)
Agent to Database Instance (SQL Response Time, Streams Capture Queue Statistics, SGA Pool Wastage, etc.)
ORA-12505: TNS:listener does not currently know of SID given in connect descriptor,
ORA-12545: Connect failed because target host or object does not exist,
em_error=Could not connect to dbsnmp/(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(Port=1521))(CONNECT_DATA=(SID=Konsta10))) : ORA-12505: TNS:listener does not currently know of SID given in connect descriptor (DBD ERROR: OCIServerAttach),
ORA-12528: TNS:listener: all appropriate instances are blocking new connections
Agent to Listener (Response)
Terminating on signal SIGTERM(15)
Policy Violations found
Oracle recommends that you close all unnecessarily open ports, especially on internet-facing hosts