配置完成后备库不能应用日志，数据是不同步的状态，查看数据库主库的告警日志发现如下报错：
LGWR: Attempting destination LOG_ARCHIVE_DEST_2 network reconnect (3113)
LGWR: Destination LOG_ARCHIVE_DEST_2 network reconnect abandoned
Errors in file /u01/app/oracle/diag/rdbms/primary/orcl/trace/orcl_lgwr_32231.trc:
ORA-03113: end-of-file on communication channel
Error 3113 for archive log file 3 to 'standby'
LGWR: Error 1041 disconnecting from destination LOG_ARCHIVE_DEST_2 standby host 'standby'
Mon Mar 11 16:16:03 2019
ARC1: Attempting destination LOG_ARCHIVE_DEST_2 network reconnect (3113)
Error 1034 received logging on to the standby
ARC1: Error 1034 attaching to RFS for reconnect
PING[ARC1]: Error 3113 when pinging standby standby.
检查发现pfile.ora文件中，archive_dest_2的设置于tns文件中的自定义备库不一样
Dataguard中archive_dest_2是用来指向备库的，负责将归档日志传到备库
注意dest_2中service= 这里应该和tnsnames中定义备库的是一样的
更改完成以后关闭主库，指定pfile文件启动数据库 ok问题解决
startup pfile='pfile文件路径'
