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本帖最后由 jiawang 于 2025-4-15 15:56 编辑
12c里,Oracle推出了 History 命令,这很像 Shell 中的 history ,减少了重敲 SQL ,带来了很多便利。
1、查看history帮助
SQL> help history
HISTORY
-------
Stores, lists, executes, edits of the commands
entered during the current SQL*Plus session.
HIST[ORY] [N {RUN | EDIT | DEL[ETE]}] | [CLEAR]
N is the entry number listed in the history list.
Use this number to recall, edit or delete the command.
Example:
HIST 3 RUN - will run the 3rd entry from the list.
HIST[ORY] without any option will list all entries in the list.
2、hist 语法
HIST[ORY] [N {RUN | EDIT | DEL[ETE]}] | [CLEAR]
3、hist 默认是关闭的,在每次会话断开连接后会自动关闭,当hist关闭后,hist 列表会被清空。
SQL> history;
SP2-1650: History is off, use "SET HIST[ORY] ON" to enable History.
4、打开或者关闭hist
SQL> set hist on;
SQL> set hist off;
5.查看hist状态
SQL> show hist;
history is OFF
6.设置hist保留的记录数 ,默认保留记录数是 100
SQL>set history 3;
7.查看hist保留的记录
SQL> hist list;
1 show con_name
2 show parameter version;
3 show hist;
说明:保留的记录数 是按命令计算 而不是行数。
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