On 12.03.2013, at 17:14, Christopher Schultz <ch...@christopherschultz.net> 
wrote:
> On 3/12/13 7:54 AM, amit shah wrote:
>> I am using Oracle. Oracle JDBC Driver provides the Oracle
>> Universal Connection Pool (UCP) which includes this 
>> feature<http://docs.oracle.com/cd/E11882_01/java.112/e16548/fstconfo.htm>of
>> 
>> 
> connection failover but since we use tomcat jdbc connection pool we
>> cannot use UCP.
> 
> Why not?

Because it would be two-level pooling?

>> Also UCP has lot of synchronized code which leads to blocking
>> threads and less concurrency support.
>> 
>> Let me know your suggestions/thoughts.
> 
> I'm thinking that a low-performance fail-over is preferable to a
> zero-performance non-fail-over.

Well, low overall performance, but possibility of failover in the hopefully 
rare case,
may not be acceptable compared to high(er) overall performance and a search for 
other ways
to perform failover.

Rainer
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