DG-duplicate 操作注意事项
log_file_name_convert='+orcl_DATA/orcldb','+orcl_data/orcldb_dg2'
查看ASM磁盘的详细信息及状态
select group_number,disk_number,header_status,mode_status,state,total_mb,name,failgroup,path from v$asm_disk;
select name,state from v$asm_diskgroup;
-- 添加 ASM磁盘组
Create diskgroup orcl1_DATA external redundancy disk '/dev/asm_vdd';
Create diskgroup orcl2_DATA external redundancy disk '/dev/asm_vdb';
Create diskgroup orcl3_DATA external redundancy disk '/dev/asm_vdi';
给磁盘组添加磁盘
alter diskgroup data add disk '/dev/asm_vde';
alter diskgroup data add disk '/dev/asm_vdf';
alter diskgroup data add disk '/dev/asm_vdg';
alter diskgroup data add disk '/dev/asm_vdh';
alter diskgroup data add disk '/dev/asm_vdj';
--加载磁盘组
ALTER DISKGROUP DATA MOUNT;
13、备库注意配置/etc/hosts
ip地址 orcldb-dg
14、duplicate后，同步日志无法成功，主库查询出现报错
SQL> select inst_id,dest_name,status,error from gv$archive_dest_status where dest_name='LOG_ARCHIVE_DEST_2';
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
1
LOG_ARCHIVE_DEST_2
ERROR ORA-16191: ??????????????????
2
LOG_ARCHIVE_DEST_2
ERROR ORA-16191: ??????????????????
或者
2
LOG_ARCHIVE_DEST_2
ERROR ORA-16058: ??????????
1
LOG_ARCHIVE_DEST_2
ERROR ORA-16058: ??????????
这个时候需要去备库重启数据库实例
Shutdown immediate
startup
15、duplicate时出现报错
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 03/28/2018 19:36:20
RMAN-05501: aborting duplication of target database
RMAN-03015: error occurred in stored script Memory Script
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 03/28/2018 19:36:20
ORA-00245: ????????; ?????????????
尝试手动执行命令，不用脚本
16、安装备库单节点ASM后，需要手动启动CRS服务
crsctl start resource ora.diskmon
crsctl status resource -t
crs_stat -p ora.cssd
crsctl modify resource "ora.cssd" -attr "AUTO_START=1" --设置自动启动
crs_stat -p ora.diskmon
crsctl modify resource "ora.diskmon" -attr "AUTO_START=1" --设置自动启动
注意：这里采用图形界面安装GRID软件，要选择第二项安装
如果选择的是最后一项安装软件，可能会漏掉一些CRS服务，导致无法使用asmca命令打开图形界面
17、记得把备份停止了
18、duplicate后，同步日志无法成功，主库查询出现报错
SQL> select inst_id,dest_name,status,error from gv$archive_dest_status where dest_name='LOG_ARCHIVE_DEST_2';
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
2
LOG_ARCHIVE_DEST_2
ERROR ORA-01033: ORACLE initialization or shutdown in progress
1
LOG_ARCHIVE_DEST_2
ERROR ORA-01033: ORACLE initialization or shutdown in progress
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
解决方法：
1、检查RAC节点的密码文件是否同步，可以直接拷贝覆盖一下
2、检查DG节点的密码文件是否同步， 可以直接拷贝RAC的密码文件到DG覆盖
3、在主节点alter system set log_archive_dest_state_2=enable;
4、再次查询状态变成VALID正常
SQL> select inst_id,dest_name,status,error from gv$archive_dest_status where dest_name='LOG_ARCHIVE_DEST_2';
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
2
LOG_ARCHIVE_DEST_2
VALID
1
LOG_ARCHIVE_DEST_2
VALID
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
注意：检验是否因密码问题导致DG日志不同步，也可以在alter.log里面查找验证（主库和备库都看）
19、如果遇到下面的报错，哈哈，可能你设置的路径并不是LOG_ARCHIVE_DEST_2
也可能是LOG_ARCHIVE_DEST_3，所以要看清楚了。 select * from V$ARCHIVE_DEST_STATUS
SQL> select inst_id,dest_name,status,error from gv$archive_dest_status where dest_name='LOG_ARCHIVE_DEST_2';
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
2
LOG_ARCHIVE_DEST_2
BAD PARAM
1
LOG_ARCHIVE_DEST_2
BAD PARAM
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
20、在DG库上设置同步后，发现日志并没有同步
SQL> select thread#,process,client_process,sequence#,status from v$managed_standby;
THREAD# PROCESS CLIENT_P SEQUENCE# STATUS
---------- --------- -------- ---------- ------------
0 ARCH ARCH 0 CONNECTED
0 ARCH ARCH 0 CONNECTED
0 ARCH ARCH 0 CONNECTED
0 ARCH ARCH 0 CONNECTED
2 MRP0 N/A 2880 APPLYING_LOG
这个时候，查看主库状态
SQL> select inst_id,dest_name,status,error from gv$archive_dest_status where dest_name='LOG_ARCHIVE_DEST_2';
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
1
LOG_ARCHIVE_DEST_2
ERROR ORA-03135: connection lost contact
2
LOG_ARCHIVE_DEST_2
ERROR ORA-03135: connection lost contact
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
在主库重新enable也没用
alter system set log_archive_dest_state_2=ENABLE;
检查DG备库监听，发现监听没启动
su - oracle
lsnrctl start
然后再次检查，发现还是不同步
主库查状态
SQL> select inst_id,dest_name,status,error from gv$archive_dest_status where dest_name='LOG_ARCHIVE_DEST_2';
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
1
LOG_ARCHIVE_DEST_2
ERROR ORA-12543: TNS:destination host unreachable
2
LOG_ARCHIVE_DEST_2
ERROR ORA-12543: TNS:destination host unreachable
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
这个时候，检查DG备库，发现，iptables -L 发现防火墙阻拦了
iptables -F清除
问题解决
21、 在DG库上设置同步后，发现日志并没有同步
SQL> select thread#,process,client_process,sequence#,status from v$managed_standby;
THREAD# PROCESS CLIENT_P SEQUENCE# STATUS
---------- --------- -------- ---------- ------------
0 ARCH ARCH 0 CONNECTED
0 ARCH ARCH 0 CONNECTED
0 ARCH ARCH 0 CONNECTED
0 ARCH ARCH 0 CONNECTED
2 MRP0 N/A 2880 APPLYING_LOG
这个时候，查看主库状态
SQL> select inst_id,dest_name,status,error from gv$archive_dest_status where dest_name='LOG_ARCHIVE_DEST_2';
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
2
LOG_ARCHIVE_DEST_2
DISABLED ORA-16057: server not in Data Guard configuration
1
LOG_ARCHIVE_DEST_2
DISABLED ORA-16057: server not in Data Guard configuration
INST_ID
----------
DEST_NAME
--------------------------------------------------------------------------------
STATUS ERROR
--------- -----------------------------------------------------------------
看到这个报错，就要去检查log_archive_config了
主备库两个都要检查，因为他们要一致
主库查看
SQL> show parameter log_archive_config
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_config string DG_CONFIG=orcldb,orcldbdg3)
备库查看
SQL> show parameter log_archive_config
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_config string DG_CONFIG=(orcldbdg3,orcldbdg)
果然不一致，修改它
SQL> alter system set log_archive_config='DG_CONFIG=(orcldbdg3,orcldb)';
去主库重新enable一下
alter system set log_archive_dest_state_2=ENABLE;
回到备库，发现已经开通同步日志了
