V$ACTIVE_SESSION_HISTORY 檢視中包含的資訊

The data present in ASH can be rolled up on various dimensions that it
captures, including the following:
■ SQL identifier of SQL statement
■ Object number, file number, and block number
■ Wait event identifier and parameters
■ Session identifier and session serial number
■ Module and action name
■ Client identifier of the session
■ Service hash identifier[@more@]