12c,12d实验与视频的差异疑问

lujiaguai

12b,12c实验中控制文件通过脚本或者rman二进制恢复以后
都是通过先recover database，看日志断点在哪里
unable to find archived log
archived log thread=1 sequence=7
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 07/05/2016 12:50:40
RMAN-06054: media recovery requesting unknown archived log for thread 1 with sequence 7 and starting SCN of 4394950
可见断点在7，然后指定断点来恢复
run
{
set until sequence 7 thread 1;
restore database;
recover database;
}
但是这样做不下去，提示如下
media recovery failed
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 07/05/2016 12:52:34
RMAN-11003: failure during parse/execution of SQL statement: alter database recover if needed
start until cancel using backup controlfile
ORA-00275: media recovery has already been started

这个时候只能去sqlplus下，执行:recover database until cancel using backup controlfile;
12b,12c,12d我第一次做都是这样的情况，其中12C反复做了2次，都是这样的。
这样的结果与视频不一致，不明白有什么差别？
在我的理解里，这2种办法都可以的，12系列之前我反复试过几个实验，2种做法都可以。
但是12系列实验却不是这样，很困惑？

botang

但是这样做不下去，提示如下
media recovery failed
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 07/05/2016 12:52:34
RMAN-11003: failure during parse/execution of SQL statement: alter database recover if needed
start until cancel using backup controlfile
ORA-00275: media recovery has already been started

哦，这可能不是偶然的。这是会话锁引起的。试验完断点后，重启一次，用rman再做。

lujiaguai

重启指的是什么？
库关掉再mount一次吗？
还说rman退出，再进一次？