Hi, Thanks for feedback. If a SQLException can be returned then I could probably use that in the Java application to determine if an exception occurred. Can you provide any guidance?
Thank you Regards Alan Farroll Analyst Programmer Finance and Corporate Services Renfrewshire House Cotton Street Paisley PA1 1HY 0141 618 7961 alan.farr...@renfrewshire.gov.uk www.renfrewshire.gov.uk From: Christopher Schultz <ch...@christopherschultz.net> To: Tomcat Users List <users@tomcat.apache.org> Date: 29/01/2013 17:11 Subject: Re: JNDI Feedback -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Alan, On 1/29/13 11:54 AM, alan.farr...@renfrewshire.gov.uk wrote: > Running Tomcat 7.0.29 on Windows XP Professional Service Pack 3 Ready for a Microsoft upgrade cycle? The clock is ticking... > I have been handed a project developed by a former colleague and I > am still learning Java and Tomcat. Welcome to the community! > The project has 4 JNDI's set up Nomenclature nit: that's "has 4 JNDI /resources/". JNDI itself is just a directory interface where you stash stuff. > 2 Oracle and 2 SQL Server with validation queries set up for the > Oracle databases. I want to set up validation queries on the > JNDI's for SQL server and also have the JNDI provide feedback to > the Java application if the database is down. The only feedback you are going to get is (eventual) SQLExceptions. > Can you advise how to do this please? If not possible, then what > is an alternative? Obviously, you can set up a validationQuery in the 2 MS SQL Server resources by just adding an appropriate query (e.g. "SELECT 1 FROM DUAL" or whatever is appropriate in MS SQL Server) to the <Resource> attributes. Were you hoping to get some other behavior than just what validationQuery already provides? FYI if you are using Tomcat's default connection pool, then you are using Apache commons-dbcp, whose configuration guide can be found here: http://commons.apache.org/dbcp/configuration.html That will explain all the configuration attributes you can use (right in the XML) and what they all do. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEAREIAAYFAlEIAq0ACgkQ9CaO5/Lv0PBwvgCfd/QXbOkTEsCA4+dVG3GkhcYu dOQAn0lAOIdxaok55TJCE5pu7jb+aR4t =izRU -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org ********************************************************************** Renfrewshire Council Website - http://www.renfrewshire.gov.uk This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. Renfrewshire Council may, in accordance with the Telecommunications(Lawful Business Practice) (Interception of Communications) Regulations 2000, intercept e-mail messages for the purpose of monitoring or keeping a record of communications on the Council's system. If a message contains inappropriate dialogue it will automatically be intercepted by the Council's Internal Audit section who will decide whether or not the e-mail should be onwardly transmitted to the intended recipient(s). This footnote also confirms that this email message has been swept by Sophos for the presence of computer viruses. **********************************************************************
