1. 请描述在windows下和linux下安装oracle数据库的区别。环境参数配置和系统参数设置不同,由于操作系统的区别linux下安装要比WINDOWS麻烦得多。2。存放于数据安装的路径(ORACLE_HOME)3.SQL> SELECT * FROM A FOR UPDATE;A B
-- ---------
A 1SQL> INSERT INTO A VALUES ('A',1);1 row created.
-- ---------
A 1SQL> INSERT INTO A VALUES ('A',1);1 row created.
5 show sga
...
4.
create trigger trigger_name
after update on tablea
for each row
begin
insert into his_tablea(...) values(....);
...
end;