PARSE

Translates the SQL statement into an execution plan, including checks for proper security authorization and checks for the existence of tables, columns, and other referenced objects.翻译sql语句到执行计划，包括适当的安全性检查，并且检查表，字段，其它参考的对象是否存在。

EXECUTE

Actual execution of the statement by Oracle. For INSERT, UPDATE, and DELETE statements, this modifies the data. For SELECT statements, this identifies the selected rows.真正的执行sql语句。对于INSERT, UPDATE, 和DELETE语句，那么会修改数据。对于SELECT语句，确定被选择的行。

FETCH

Retrieves rows returned by a query. Fetches are only performed for SELECT statements.得到查询返回的行。只有SELECT语句才执行这个动作。

COUNT

Number of times a statement was parsed, executed, or fetched.语句被解析，执行，和获取的次数

CPU

Total CPU time in seconds for all parse, execute, or fetch calls for the statement. This value is zero (0) if TIMED_STATISTICS is not turned on.解析、执行、获取总的CPU时间（秒）。TIMED_STATISTICS选项如果没有打开，则是0。

ELAPSED

Total elapsed time in seconds for all parse, execute, or fetch calls for the statement. This value is zero (0) if TIMED_STATISTICS is not turned on.解析、执行、获取的总时间（秒）。TIMED_STATISTICS选项如果没有打开，则是0。

DISK

Total number of data blocks physically read from the datafiles on disk for all parse, execute, or fetch calls.解析、执行、获取过程中从硬盘上的数据文件物理读取的数据块的个数。

QUERY

Total number of buffers retrieved in consistent mode for all parse, execute, or fetch calls. Usually, buffers are retrieved in consistent mode for queries.

consistent 方式读取的缓冲区的数量。通常对于查询语句缓冲区是consistent读取的。

CURRENT

Total number of buffers retrieved in current mode. Buffers are retrieved in current mode for statements such as INSERT, UPDATE, and DELETE.

current 模式读取缓冲区的数量。INSERT, UPDATE, and DELETE语句一般式current 模式读取缓冲的。

ROWS

Total number of rows processed by the SQL statement. This total does not include rows processed by subqueries of the SQL statement.

sql语句处理的总行数。这个总行数不包括子查询处理的行数。