I am using MAPI C library to talk to multiple monetdb databases.

I cache the connection (struct mapi) to reduce overhead.

However if a database/machine restarts then the connection is not usable. 

How do I determine if a cached connection is usable before actually using it.

I have tried mapi_is_connected() and mapi_ping().

But mapi_ping always returns 0 while mapi_is_connected always returns 1.

Thansk and Regards,

Tapomay.