A few weeks ago, I had the opportunity to investigate an issue on a live system where a regular J2EE web application was hitting the well-known error ORA-01555: snapshot too old: rollback segment number <number> with name <name> too small . But in this particular case, it was accompanied by an ORA-02063, which means that the error was received from a database link. Folks with Oracle dblink experience are probably aware that unexpected traps lurk beneath the attractive abstraction that dblinks provide. A snapshot too old on a dblink - that had to be interesting !
Wednesday, July 21, 2010
Monday, July 19, 2010
A signed root zone and an NSEC adventure
On 15-July-2010, the root zone of the Domain Name System was DNSSEC-enabled. The details of this effort, which was underway for some time, are outlined at http://www.root-dnssec.org. The signing of the root is regarded as an important step towards a broader DNSSEC deployment across the internet.
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