oracle11R2 log_archive_format

         log_archive_format定义了归档文件名称的格式。

SQL> select * from v$version;   BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production PL/SQL Release 11.2.0.3.0 - Production CORE       11.2.0.3.0        Production TNS for Linux: Version 11.2.0.3.0 - Production NLSRTL Version 11.2.0.3.0 - Production

         default value

SQL> show parameter log_archive_format;   NAME                                     TYPE      VALUE ------------------------------------ ----------- ------------------------------ log_archive_format                     string     %t_%s_%r.dbf

         detail

l  %s：日志序列号

l  %S：日志序列号（带有前导）

l  %t：重做线程编号

l  %T：重做线程编号（带有前导）

l  %a：活动ID号

l  %d：数据库ID号

l  %r：resetlogs的ID值

modify

SQL> alter system set log_archive_format='ARCH_%t_%s_%r.ARC' scope=both; alter system set log_archive_format='ARCH_%t_%s_%r.ARC' scope=both                  * ERROR at line 1: ORA-02095: specified initialization parameter cannot be modified   SQL> alter system set log_archive_format='ARCH_%t_%s_%r.ARC' scope=spfile;   System altered.

         restart

SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> startup; ORACLE instance started.   Total System Global Area 1603411968 bytes Fixed Size                      2228784 bytes Variable Size              973082064 bytes Database Buffers      620756992 bytes Redo Buffers               7344128 bytes Database mounted. Database opened.

         check

SQL> show parameter log_archive_format;   NAME                                     TYPE      VALUE ------------------------------------ ----------- ------------------------------ log_archive_format                     string     ARCH_%t_%s_%r.ARC   SQL> alter system switch logfile;   System altered.

 

[oracle@orcl01rmp]$ ls -l

total 43992

-rw-r-----. 1oracle oinstall 16677376 Jan  5 10:521_23_899396931.dbf

-rw-r-----. 1oracle oinstall 24066560 Jan  5 10:521_24_899396931.dbf

-rw-r-----. 1oracle oinstall  2202624 Jan  5 10:52 1_25_899396931.dbf

-rw-r-----. 1oracle oinstall  2093568 Jan  5 14:04 ARCH_1_27_899396931.ARC