Re: Database reset connection

No, as I said this is out of the scope of JDBC

Dave Cramer

davec(at)postgresintl(dot)com
www.postgresintl.com

On 1 December 2016 at 00:30, Manoj Palhade <reply(dot)manoj(at)gmail(dot)com> wrote:

> Hi,
>
> Thanks for your quick reply.
>
> It looks like I am using JDBC3 from the runtime exception I got
> (Caused by: java.lang.AbstractMethodError: org.postgresql.jdbc3.
> Jdbc3Connection.isValid(I)Z)
>
> I guess *postgresql.jdbc3* does not have any way to auto Connection to
> database with timer.
>
>
>
> Thanks and Regards,
> Manoj Palhade
>
>
> On Wed, Nov 30, 2016 at 5:58 PM, rob stone <floriparob(at)gmail(dot)com> wrote:
>
>>
>> On Wed, 2016-11-30 at 16:48 +0530, Manoj Palhade wrote:
>> > Hi,
>> >
>> > I have Java class which implements the Database(Postgres) related
>> > functionality.
>> >
>> > The problem is if Database stopped and then restart then My this
>> > class throws SQLException as connection got reset(database is up and
>> > running).
>> >
>> > Is there any way that after Database restarted; my class
>> > automatically Connection to database and work as expected instead of
>> > throwing SQLException.
>> >
>> > Is there anyway with Properties as a parameter to
>> > DriverManager.getConnection().
>> >
>> > Thanks and Regards,
>> >
>> > Manoj Palhade
>> >
>>
>>
>>
>> From the javdoc's:-
>>
>> isValid
>>
>> boolean isValid(int timeout)
>> throws SQLException
>>
>> Returns true if the connection has not been closed and is still
>> valid. The driver shall submit a query on the connection or use some
>> other mechanism that positively verifies the connection is still valid
>> when this method is called.
>>
>> The query submitted by the driver to validate the connection shall
>> be executed in the context of the current transaction.
>>
>> Parameters:
>> timeout - - The time in seconds to wait for the database
>> operation used to validate the connection to complete. If the timeout
>> period expires before the operation completes, this method returns
>> false. A value of 0 indicates a timeout is not applied to the database
>> operation.
>>
>> Returns:
>> true if the connection is valid, false otherwise
>> Throws:
>> SQLException - if the value supplied for timeout is less then 0
>> Since:
>> 1.6
>>
>> See Also:
>> DatabaseMetaData.getClientInfoProperties()
>>
>>
>