BayaiM__oracle切换归档模式(步骤)：

------------------oracle11g设置归档模式和非归档模式--------------------------
[root@testoracle ~]#mkdir /u01/arch
[root@testoracle ~]#chown -R oracle:oinstall /u01/arch
[root@testoracle ~]#sqlplus / as sysdba
SQL> archive log list;
SQL> select name, log_mode from v$database;
SQL> shutdown immediate;
SQL> startup mount;
SQL> alter database archivelog;
SQL> alter database open;
SQL> alter system set log_archive_dest_1='location=/u01/arch' scope=spfile;
SQL> shutdown immediate;
SQL> startup;
SQL> show parameter dest;
log_archive_dest_1 string location=/u01/arch
SQL> alter system switch logfile; -- 是强制日志切换，不一定就归档当前的重做日志文件（若自动归档打开，就归档前的重做日志，若自动归档没有打开，就不归档当前重做日志。）
SQL> /
[root@testoracle arch]# pwd
/u01/arch
[root@testoracle arch]# ll
-rw-r----- 1 oracle oinstall 8863744 11月 2 14:53 1_12_991067760.dbf
-rw-r----- 1 oracle oinstall 1024 11月 2 14:53 1_13_991067760.dbf
[oracle@testoracle ~]$ lsnrctl
LSNRCTL> stop
LSNRCTL> start
Services Summary...
Service "prodb" has 1 instance(s).
Instance "prodb", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL>

修改日志文件命名格式
alter system set log_archive_max_processes = 5;
alter system set log_archive_format = "archive_%t_%s_%r.log" scope=spfile;

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对于小白人，无脑操作，完全按照我的步骤就好，不要问，记住不懂得不要问，只要做就好了。

2018年11月2日15:00:24

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