I am working on DB2 Version 8. Does db2audit have capability to
capture who, when, on what object an Insert, Update or Delete
operation was performed. I don't need the statement that was executed,
only the operation type and of course whether it was successful or
not.

There is no clear answer to this question in Version 8 documentation.
Some articles mention that CONTEXT capture these details however could
not confirm this.

(trying my luck at this forum after getting no response from other 2 forums)

"who, when, on what object " - yes, audit does this