Home > Ask the Oracle Database / Applications Experts > Oracle Application Server Questions & Answers > Problems connecting to database after installing Forms
Ask The Oracle Expert: Questions & Answers
EMAIL THIS

Problems connecting to database after installing Forms

John Garmany EXPERT RESPONSE FROM: John Garmany

Pose a Question
Other Oracle Categories
Meet all Oracle Experts
Become an Expert for this site


Oracle tips, scripts, and expert advice
Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us    Add to Google


>
QUESTION POSED ON: 10 November 2005
Initially Oracle 8i was installed on my PC. Recently I installed Oracle Forms 6i, and from that day on I was not able to connect to the database. It is giving me the ORA-12203 error. Because the listener was not started I tried to start the listener service from control panel --> administrative tools --> services. It says the service cannot be started.


Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us    Add to Google



RELATED CONTENT
Oracle Application Server
Database objects becoming invalid
How to solve ORA-04076 error?
Receiving ORA-12541 error trying to connect through Forms/Reports
Button trigger raising exception
Cause of access violation while connecting from Forms
Migrating a database to 10g and a new server
Best OS for installing database and application server on same server
Accessing an application through the Internet
Testing the accessibility of an application from outside U.A.E.
Accessing applications from the Internet

Oracle error messages
Why am I receiving Oracle memory allocation errors?
Oracle tutorial library: SearchOracle.com's learning guides
Oracle error 6550 may mean incorrect Oracle export version
Why does the archive log in Oracle give me the ORA-16032 error?
Are we getting the ORA-00382 error because we're at maximum block size?
How do I solve the ORA-00257 error in Oracle?
Solving common Oracle errors guide
Error during RMAN backup
ORA-12560 error with Oracle 10g Instant Client
Unable to view Oracle tables in NetBeans

Oracle database installation, upgrades and patches
Oracle's Java database continues push into embedded database market
How to use the Oracle Database Upgrade Assistant (DBUA)
Oracle delivers database fixes in Critical Patch Update
How to get the most out of Toad for Oracle 10
Coca-Cola Bottling swaps out Oracle for DB2
Oracle renews push into embedded open source software market
Oracle releases new database, says 11g upgrade will cut costs
Comparing servers for Oracle database 11g upgrades
Choosing the right server hardware is all about choosing the right software
The best of the Oracle 11g-ready servers

RELATED GLOSSARY TERMS
Terms from Whatis.com − the technology online dictionary
10g  (SearchOracle.com)

RELATED RESOURCES
2020software.com, trial software downloads for accounting software, ERP software, CRM software and business software systems
Search Bitpipe.com for the latest white papers and business webcasts
Whatis.com, the online computer dictionary


Well, I can't solve your problem but I can direct you where to begin looking. First, look for the listener log in $ORACLE_HOME/network/log. This may tell you why the listener will not start. Also check the database alert log to ensure that the database is starting. Sometimes the service will tell you it started when in fact it never gets to the point of being open. Try to manually start the listener. Open a command prompt. Set the oracle home and then start the listener. 

C:> set ORACLE_HOME=C:oracleora8i  (whatever yours is) C:> lsnrctl start
If this fails you will have the errors that caused it to fail. You can use the listener control utility to start, stop or check the status of the listener. 
C:> lsnrctl status
Hope that will at least get you to the point of getting the listener error message to tell you why it will not start.




Search and Browse the Expert Answer Center
Search and browse more than 25,000 question and answer pairs from more than 250 TechTarget industry experts.
Browse our Expert Advice



Oracle White Papers: Fusion Middleware
HomeNewsTopicsTipsAsk the ExpertsMultimediaWhite PapersProductsBlogs
About Us  |  Contact Us  |  For Advertisers  |  For Business Partners  |  Site Index  |  RSS
SEARCH 
TechTarget provides technology professionals with the information they need to perform their jobs - from developing strategy, to making cost-effective purchase decisions and managing their organizations' technology projects - with its network of technology-specific websites, events and online magazines.

TechTarget Corporate Web Site  |  Media Kits  |  Site Map




All Rights Reserved, Copyright 2003 - 2009, TechTarget | Read our Privacy Policy 		  TechTarget - The IT Media ROI Experts