在oracle 数据库中查看一个sql语句的执行时间和SP2-0027错误
oracle 数据库中查看一个sql语句的执行时间和SP2-0027错误的解决方法
进入sqlplusSQL> set timing on
SQL>
SQL> select count(*) from comm_human_role;
COUNT(*)
----------
866
Elapsed: 00:00:00.05
以上数字输出分别是:Hours:Minutes:Seconds.Milliseconds
即用了0.05秒的时间执行,相当于50毫秒。
时间如果是这样的表示:00: 03: 235.78
总共用的时间为235.78秒, 不到4分钟,所以显示的是3分钟(235.78秒大约为3分钟55.78秒)
#设置屏幕行宽度
SQL>set linesize 190
#设置sqlplus打印执行计划和统计信息
SQL>set autotrace on
#设置sqlplus打印执行时间
SQL>set timing on
如果在sqlplus中出现下面的错误:
SP2-0027: Input is too long (> 2499 characters) - line ignored
表示sql一行的语句已经超过了2499个字符。
解决:
在一段sql中加“回车”,
保证每行不超2499个字符,重新执行sql语句就好了。

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