主库增加表空间导致DG同步失败
问题现象：
由于主库表空间不足，同事给表空间增加数据文件，第二天收到反馈说备库未同步。
1、主、备查看归档序列号，发现主、备归档正常同步。
SQL>archive log list
2、在主库端查询v$archived_log视图，确认日志是否被应用
set lines 300 pages 300 col name for a20 select name,dest_id,thread#,sequence#,standby_dest,applied,registrar,completion_time from v$archived_log where standby_dest='YES' order by thread#,sequence#;
3、在备库查看接收到的被应用的redo，发现日志未被应用
在备库查看已经应用和正在应用的日志： SELECT SEQUENCE#,APPLIED,TO_CHAR(COMPLETION_TIME, 'yy-mm-dd hh24:mi:ss') FROM V$ARCHIVED_LOG where APPLIED='YES' OR APPLIED like '%IN-MEMRY%' ORDER BY SEQUENCE#; SEQUENCE#,APPLIED FROM V$ARCHIVED_LOG ORDER BY SEQUENCE#;
4、处理方式:
现在备库中建立了对应的文件夹并赋权
将备库中STANDBY_FILE_MANAGEMENT选项设定为MANUAL
查找出对应的UNNAMED 文件
将UNNAMED文件重命名为指定需要新建的数据文件
将备库STANDBY_FILE_MANAGEMENT 恢复设置为auto
同步数据
主备库查看：
show parameter STANDBY_FILE_MANAGEMENT ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT=MANUAL; select name from v$datafile where name like '%UNNAMED%';
主库
主库： SQL> col name for a50 select file#,name from v$datafile; FILE# NAME ---------- ---------------------------------------------------------------------------------------------------- 1 /opt/oradata/shdb/system01.dbf 2 /opt/oradata/shdb/sysaux01.dbf 3 /opt/oradata/shdb/undotbs01.dbf 4 /opt/oradata/shdb/users01.dbf 5 /opt/oradata/shdb/tbs_hank_dat01.dbf 6 /opt/oradata/shdb/tbs_hank_idx01.dbf 7 /opt/oradata/shdb/tbs_dock_dat01.dbf 8 /opt/oradata/shdb/tbs_mok_dat01.dbf 9 /opt/oradata/shdb/tbs_lod_dat01.dbf 10 /opt/oradata/shdb/tbs_book_idx01.dbf 11 /opt/oradata/shdb/tbs_book_part_dat01.dbf 12 /opt/oradata/shdb/tbs_book_part_idx01.dbf 13 /opt/oradata/shdb/system02.dbf 14 /opt/oradata/shdb/tbs_book_idx02.dbf 15 /opt/oradata/shdb/tbs_book_part_dat02.dbf 16 /opt/oradata/shdb/tbs_dock_dat02.dbf 17 /opt/oradata/shdb/tbs_book_idx03.dbf 18 /opt/oradata/shdb/tbs_book_part_dat03.dbf 19 /opt/oradata/shdb/tbs_book_idx04.dbf 20 /opt/oradata/shdb/tbs_book_idx05.dbf 21 /opt/oradata/shdb/tbs_book_part_dat04.dbf 22 /opt/oradata/shdb/tbs_book_part_dat05.dbf 23 /opt/oradata/shdb/tbs_dock_dat03.dbf 24 /opt/oradata/shdb/user02.dbf 24 rows selected.
备库：
备库： SQL> select name from v$datafile where name like '%UNNAMED%'; NAME -------------------------------------------------- /opt/oracle/app/product/11g/dbs/UNNAMED00019
col name for a50 select file#,name from v$datafile; FILE# NAME ---------- -------------------------------------------------- 1 /opt/oradata/shdbstd/system01.dbf 2 /opt/oradata/shdbstd/sysaux01.dbf 3 /opt/oradata/shdbstd/undotbs01.dbf 4 /opt/oradata/shdbstd/users01.dbf 5 /opt/oradata/shdbstd/tbs_hank_dat01.dbf 6 /opt/oradata/shdbstd/tbs_hank_idx01.dbf 7 /opt/oradata/shdbstd/tbs_dock_dat01.dbf 8 /opt/oradata/shdbstd/tbs_mok_dat01.dbf 9 /opt/oradata/shdbstd/tbs_lod_dat01.dbf 10 /opt/oradata/shdbstd/tbs_book_idx01.dbf 11 /opt/oradata/shdbstd/tbs_book_part_dat01.dbf FILE# NAME ---------- -------------------------------------------------- 12 /opt/oradata/shdbstd/tbs_book_part_idx01.dbf 13 /opt/oradata/shdbstd/system02.dbf 14 /opt/oradata/shdbstd/tbs_book_idx02.dbf 15 /opt/oradata/shdbstd/tbs_book_part_dat02.dbf 16 /opt/oradata/shdbstd/tbs_dock_dat02.dbf 17 /opt/oradata/shdbstd/tbs_book_idx03.dbf 18 /opt/oradata/shdbstd/tbs_book_part_dat03.dbf 19 /opt/oracle/app/product/11g/dbs/UNNAMED00019 19 rows selected. SQL>
和主库对比，进行修改
alter database create datafile '/opt/oracle/app/product/11g/dbs/UNNAMED00019' as '/opt/oradata/shdb/tbs_book_idx04.dbf'; recover managed standby database disconnect;
继续查询备库：
SQL> select name from v$datafile; NAME -------------------------------------------------- /opt/oradata/shdbstd/system01.dbf /opt/oradata/shdbstd/sysaux01.dbf /opt/oradata/shdbstd/undotbs01.dbf /opt/oradata/shdbstd/users01.dbf /opt/oradata/shdbstd/tbs_hank_dat01.dbf /opt/oradata/shdbstd/tbs_hank_idx01.dbf /opt/oradata/shdbstd/tbs_dock_dat01.dbf /opt/oradata/shdbstd/tbs_mok_dat01.dbf /opt/oradata/shdbstd/tbs_lod_dat01.dbf /opt/oradata/shdbstd/tbs_book_idx01.dbf /opt/oradata/shdbstd/tbs_book_part_dat01.dbf NAME -------------------------------------------------- /opt/oradata/shdbstd/tbs_book_part_idx01.dbf /opt/oradata/shdbstd/system02.dbf /opt/oradata/shdbstd/tbs_book_idx02.dbf /opt/oradata/shdbstd/tbs_book_part_dat02.dbf /opt/oradata/shdbstd/tbs_dock_dat02.dbf /opt/oradata/shdbstd/tbs_book_idx03.dbf /opt/oradata/shdbstd/tbs_book_part_dat03.dbf /opt/oradata/shdb/tbs_book_idx04.dbf /opt/oracle/app/product/11g/dbs/UNNAMED00020 20 rows selected. 可以发现，又出现一个UNNAMED00020
同样的方法处理 alter database create datafile '/opt/oracle/app/product/11g/dbs/UNNAMED00020' as '/opt/oradata/shdb/tbs_book_idx05.dbf'; recover managed standby database disconnect;
按照这种方法反复查询，知道主备数据文件数量一致，且备库不再出现UNNAMED***类似的数据文件
ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT=auto;
5、备库启用apply，接收来自主库的redo并apply
alter database recover managed standby database using current logfile disconnect from session;
6、取消同步
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;
7、备库再次启用apply，接收来自主库的redo并apply
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;
8、根据步骤1、2、3进行验证。
在备库查看已经应用和正在应用的日志：
SELECT SEQUENCE#,APPLIED,TO_CHAR(COMPLETION_TIME, 'yy-mm-dd hh24:mi:ss') FROM V$ARCHIVED_LOG where APPLIED='YES' OR APPLIED like '%IN-MEMORY%' ORDER BY SEQUENCE#;