发现修改成归档模式下，只需要重启系统

发现修改成归档模式下，只需要重启系统，不需要对数据库进行备份

1 修改成归档模式
[db2inst1@db210 arc]$ db2 update db cfg for test using LOGARCHMETH1 "DISK:/test/arch"
DB20000I  The UPDATE DATABASE CONFIGURATION command completed successfully.
SQL1363W  Database must be deactivated and reactivated before the changes to
one or more of the configuration parameters will be effective.
2 关闭数据库
[db2inst1@db210 arc]$ db2 force application all
DB20000I  The FORCE APPLICATION command completed successfully.
DB21024I  This command is asynchronous and may not be effective immediately.
3  连接数据库
[db2inst1@db210 arc]$ db2 connect to test
   Database Connection Information
Database server        = DB2/LINUXX8664 10.1.0
SQL authorization ID   = DB2INST1
Local database alias   = TEST
4  参数已经生效
db2 get db cfg for test | grep -i loga
First log archive method                 (LOGARCHMETH1) = DISK:/test/arch/
Archive compression for logarchmeth1    (LOGARCHCOMPR1) = OFF
Options for logarchmeth1                  (LOGARCHOPT1) =
Second log archive method                (LOGARCHMETH2) = OFF
Archive compression for logarchmeth2    (LOGARCHCOMPR2) = OFF
Options for logarchmeth2                  (LOGARCHOPT2) =