These views summarize memory use, grouped by thread. By default, rows are sorted by descending amount of memory used.
          The
          memory_by_thread_by_current_bytes
          and
          x$memory_by_thread_by_current_bytes
          views have these columns:
- thread_id- The thread ID. 
- user- The thread user or thread name. 
- current_count_used- The current number of allocated memory blocks that have not been freed yet for the thread. 
- current_allocated- The current number of allocated bytes that have not been freed yet for the thread. 
- current_avg_alloc- The current number of allocated bytes per memory block for the thread. 
- current_max_alloc- The largest single current memory allocation in bytes for the thread. 
- total_allocated- The total memory allocation in bytes for the thread.