db2 开启归档日志的功能

1、 查看默认情况下的设置：

   db2 get db cfg for db_name |grep -i log

   结果如下：

Log retain for recovery enabled             (LOGRETAIN) = OFF
 User exit for logging enabled                (USEREXIT) = OFF
 HADR log write synchronization mode     (HADR_SYNCMODE) = NEARSYNC
 First log archive method                 (LOGARCHMETH1) = OFF

 默认情况为循环日志

 

2、更改为归档日志：

   db2 update db cfg for db_name using LOGRETAIN ON

  

   运行后结果如下：

Log retain for recovery enabled             (LOGRETAIN) = RECOVERY
 User exit for logging enabled                (USEREXIT) = OFF
 HADR log write synchronization mode     (HADR_SYNCMODE) = NEARSYNC
 First log archive method                 (LOGARCHMETH1) = LOGRETAIN、

 

  更改归档目录:

  db2 update db cfg for db_name using LOGARCHMETH1 "disk:/archive/db_name_db_log"

 

 运行后结果如下：

 Log retain for recovery enabled             (LOGRETAIN) = RECOVERY
 User exit for logging enabled                (USEREXIT) = OFF
 HADR log write synchronization mode     (HADR_SYNCMODE) = NEARSYNC
 First log archive method                 (LOGARCHMETH1) =  

                                                    DISK:/archivelog/db_name_db_log/

 

3、手工归档方法：

  db2 archive log for db db_name

  （但前提是没数据库连接，很奇怪，不知道为什么）

 如下：

[db2inst1@home SQLOGDIR]$ db2 connect to fangys

   Database Connection Information

 Database server        = DB2/LINUX 8.2.9
 SQL authorization ID   = DB2INST1
 Local database alias   = FANGYS

[db2inst1@home SQLOGDIR]$ db2 archive log for db fangys
SQL1493N  The application is already connected to an active database.

  -------不知道为什么不行！！！！

 

[db2inst1@home SQLOGDIR]$ db2 connect reset
DB20000I  The SQL command completed successfully.
[db2inst1@home SQLOGDIR]$ db2_ps
Node 0
     UID        PID       PPID    C     STIME     TTY     TIME CMD
db2inst1       6608       6607    0     21:30   pts/1 00:00:00 db2sysc 0
    root       6609       6608    0     21:30   pts/1 00:00:00 db2ckpwd 0
    root       6610       6608    0     21:30   pts/1 00:00:00 db2ckpwd 0
    root       6611       6608    0     21:30   pts/1 00:00:00 db2ckpwd 0
    root       6612       6608    0     21:30   pts/1 00:00:00 db2pmd 0
db2inst1       6613       6608    0     21:30   pts/1 00:00:00 db2gds 0
db2inst1       6615       6608    0     21:30   pts/1 00:00:00 db2ipccm 0
db2inst1       6616       6608    0     21:30   pts/1 00:00:00 db2tcpcm 0
db2inst1       6617       6608    0     21:30   pts/1 00:00:00 db2resync 0
db2inst1       6620       6608    0     21:30   pts/1 00:00:00 db2hmon  ,0,0,0,1,0,0,0,0,1e014,2,0,1,9fe0,0x113a0000,0x113a0000,15fc000,58004,2,f800a
db2inst1       6618       6613    0     21:30   pts/1 00:00:00 db2srvlst 0
db2inst1       8502       6613    0     22:50   pts/1 00:00:00 db2agent (instance) 0
db2inst1       8748       6613    0     23:07   pts/1 00:00:00 db2agent (idle) 0
db2inst1       8831       6613    0     23:17   pts/1 00:00:00 db2agent (idle) 0
db2inst1       9026       6613    0     23:27   pts/1 00:00:00 db2agent (idle) 0
db2inst1       9124       6613    0     23:34   pts/1 00:00:00 db2agent (idle) 0
db2inst1       9125       6613    0     23:34   pts/1 00:00:00 db2agent (idle) 0
db2inst1       6873       6615    0     21:46   pts/1 00:00:00 db2agent (instance) 0
[db2inst1@home SQLOGDIR]$ db2 archive log for db fangys
DB20000I  The ARCHIVE LOG command completed successfully.

----------------这样就行了，很奇怪