ARCH和LGWR进程同步DG日志的区别 我在做Standby RAC实验时,起初使用的是ARCH传输,后来将其改为LGWR传输(实际是LGWR分出的小工进程LNS): --之前的设置 alter system set log_archive_dest_2='SERVICE=mynas ARCH VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=mynas'; --修改设置,可以在线修改: alter system set log_a
[root@bgx shell]# cat tt.sh #! /bin/bash test() { echo "未加引号,二者相同" echo $* echo $@ echo "加入引号后对比" echo "----"\$*----"" for N in "$*" do echo $N done echo "----"\$@----"" for N in "
#! /bin/bash test() { echo "未加引号,二者相同" echo $* echo $@ # 脚本名 echo $ # 参数个数 echo $# # 返回值 echo $? echo "加入引号后对比" for N in "$*" do echo $N done echo "----------" for N in "$@" do echo $N done } test [root@el