V$CLASS_CACHE_TRANSFER

V$CLASS_CACHE_TRANSFER displays the number of blocks pinged per block class. Use this view to compare contentions for blocks in different classes.

Column	Datatype	Description
CLASS	VARCHAR2(18)	The block class
X_2_NULL	NUMBER	Number of lock conversions from Exclusive-to-NULL for all blocks of the specified CLASS
X_2_NULL_FORCED_WRITE	NUMBER	Number of forced writes that occur for blocks of the specified CLASS due to Exclusive-to-NULL conversions
X_2_NULL_FORCED_STALE	NUMBER	Number of times a block in the CLASS was made STALE due to Exclusive-to-NULL conversions
X_2_S	NUMBER	Number of lock conversions from Exclusive-to-Shared for all blocks of the specified CLASS
X_2_S_FORCED_WRITE	NUMBER	Number of forced writes that occur for blocks of the specified CLASS due to Exclusive-to-Shared conversions
S_2_NULL	NUMBER	Number of lock conversions from Shared-to-NULL for all blocks of the specified CLASS
S_2_NULL_FORCED_STALE	NUMBER	Number of times a block in the CLASS was made STALE due to Shared-to-NULL conversions
NULL_2_X	NUMBER	Number of lock conversions from NULL-to-Exclusive for all blocks of the specified CLASS
S_2_X	NUMBER	Number of lock conversions from Shared-to-Exclusive for all blocks of the specified CLASS
NULL_2_S	NUMBER	Number of lock conversions from NULL-to-Shared for all blocks of the specified CLASS