Updating Oracle Instant Client

Hi Basis Expert,

I have an question regarding Oracle Instant Client in 11g (11.2.0.2).

Can i update the oracle instant client in 11g(11.2.0.2) when SAP System, listener and DB is up and running?

Till now we have updated new oracle instant client by stopping the SAP system, listener and DB.

I am thinking in point of production system so that we can reduce the downtime.

Please suggest me.

Regards,

Anil Shenoy.