New monitoring metrics for determining failure rate of SQL statements

It is now possible to monitor the failure rate of an SQL statement using the MON_GET_PKG_CACHE_STMT table function.

The following columns have been added to MON_GET_PKG_CACHE_STMT:

The MON_GET_PKG_CACHE_STMT_DETAILS table function has also been updated to include this data in the XML document output. Further, the PACKAGE CACHE event monitor has been updated to include this new data, allowing the data to be captured by an active event monitor as statements are evicted from the SQL cache.