Sorry, this is totally from memory ( don't have my notes to hand ) , but we had something similar. Sounds crazy, but it was to do with using SYSDATE with DBMS_SCHEDULER and BST. The jobs were created in BST using a daft combination of start_date and SYSDATE. When we headed back into GMT at the end of British Summer time, the jobs started running one hour out. After some playing about we stopped using sysdate and used the correct TIMESTAMP data type when setting up jobs. As an OT we had a weird one the other day on our Solaris 10 boxes. When we hit BST a couple of weeks back, all the jobs between 1am and 2am, failed to run. We couldn't work it out until we realised that cron has no concept of daylight savings. The O/S simply flipped the clock from 1 to 2 and cron obviously skipped all the jobs between 1 and 2. Had us scratching our heads for an hour or two. ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Howard Latham Sent: 01 June 2009 14:14 To: ORACLE-L Cc: brian Subject: DBMS Scheduler runs jobs an hour late Oracle 10g on Redhat Linux Although our time zone is Europe/London and the Database seems to know we are in GMT+1 our manually run jobs run an hour late - any ideas? -- Howard A. Latham Please consider the environment before printing ******************************************************************************************** This message contains confidential information and is intended only for the individual or entity named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. This message is provided for informational purposes and should not be construed as an invitation or offer to buy or sell any securities or related financial instruments. GAM operates in many jurisdictions and is regulated or licensed in those jurisdictions as required. To the extent this email has been sent to you by any GAM company domiciled in the EU, being GAM (U.K.) Limited, GAM Sterling Management Limited, GAM International Management Limited, GAM London Limited, GAM Fund Management Limited, or GAM Fonds Marketing GmbH i.L., please note the following details in respect of each such company: - GAM (U.K.) Limited (a company limited by shares and registered in England and Wales with company number 01664573); - GAM Sterling Management Limited (a company limited by shares and registered in England and Wales with company number 01750352); - GAM International Management Limited (a company limited by shares and registered in England and Wales with company number 01802911); - GAM London Limited (a company limited by shares and registered in England and Wales with company number with Company Number 00874802) Each of Registered Office: 12 St. James's Place, London, SW1A 1NX GAM Sterling Management Limited, GAM International Management Limited and GAM London Limited are each authorised and regulated by the Financial Services Authority. GAM Fund Management Limited (a company limited by shares and registered in Ireland with no. 156828) of Registered Office: George's Court 54-62 Townsend Street Dublin 2, Ireland GAM Fonds Marketing GmbH, i.L. (a company limited by shares and registered in Germany under No. HRB 66857) of Friedrichstrasse 154, D-10117 Berlin, Germany. The competent Commercial Register is "Amtsgericht Charlottenburg" in Berlin. Liquidator: Daniel Durrer.