PLSQL Developer查询结果表格中复制字段值,总会 卡顿一下,原因是PLSQL Dev默认会再次从oracle 数据字典里读取字段meta info,如图:
此功能大多数我们不需要,反而降低性能,影响使用感受。
可以在PL/SQL Dev中依次打开:
取消勾选“ Show dictionary info in result grid ”
关于该项在Manual中的解释如下:
Show dictionary info in result grid.
When enabled, the following dictionary info will be displayed in the result grid:
- The column data type, optionality, and comment will be displayed on the status line.
- A lookup list will be displayed for columns with a check constraint that checks for specific
values (e.g. col in (value1, value2, ...))
- A Lookup list will be displayed for columns with a foreign key constraint to small tables of
less than 1000 rows.
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转载于:http://blog.itpub.net/12707874/viewspace-2637516/