oracle--DG模式備庫歸檔缺失問題（1）

01.問題描述

　　 備庫的歸檔日志沒有增加，一直等待一個

    查詢問題：

SQL> SELECT * FROM V$ARCHIVE_GAP;

   THREAD# LOW_SEQUENCE# HIGH_SEQUENCE#
---------- ------------- --------------
     1        6434       6435

select name ,sequence# from v$archived_log;
NAME                                          SEQUENCE#
-------------------------------------------------------------------------------- ----------
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6414_1000748999.dbf           6414
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6417_1000748999.dbf           6417
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6420_1000748999.dbf           6420
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6421_1000748999.dbf           6421
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6419_1000748999.dbf           6419
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6418_1000748999.dbf           6418
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6425_1000748999.dbf           6425
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6426_1000748999.dbf           6426
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6423_1000748999.dbf           6423
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6422_1000748999.dbf           6422
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6424_1000748999.dbf           6424

NAME                                          SEQUENCE#
-------------------------------------------------------------------------------- ----------
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6366_1000748999.dbf           6366
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6427_1000748999.dbf           6427
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6428_1000748999.dbf           6428
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6429_1000748999.dbf           6429
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6509_1000748999.dbf           6509
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6431_1000748999.dbf           6431
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6432_1000748999.dbf           6432
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6430_1000748999.dbf           6430
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6433_1000748999.dbf           6433
/u01/app/oracle/product/11.2.0/db_1/dbs/archivelog/1_6436_1000748999.dbf           6436

二，問題解決思路

　　01，查看本地庫存不存在這個歸檔日志

　　　　🤣存在就直接手工注冊上這個日志文件

　　　　　　手工注冊:

alter database register logfile ' XXX'

　　　　🙃如果存在也注冊了但是未注冊成功的話可能是歸檔傳輸過程出現了問題，重新傳輸然后換個路徑應用歸檔

rman target /

catalog start with 'XXXX';

---注冊日志

　　 02，查看主庫存不存在歸檔日志

　　　　🥚如果存在的話k拷貝到備庫然后手工組測

　　　　😋如果不存在的話生成基於SCN的備份集

　　　　　　

查看備庫最小的scn號:
select to_char(current_scn) from v$database;
select min(checkpoint_change#) from v$datafile;
select min(checkpoint_change#) from v$datafile_header;

比對最小的scn

然后再備庫生成基於SCn的備份集

backup as compressed backupset incremental from scn $MIN  database format '/backup/inc_%d_%T_%s_%p';
backup current controlfile for standby format '/backup/inc.ctl';


然后scp 傳輸到備庫上

備庫恢復備份集
shutdown abort;
startup nomount;
restore standby controlfile from "/backup/inc.ctl";
alter database mount;
catalog start with "/backup/" NOPROMPT;
shutdown immediate;
startup mount;
recover database;


重新開啟實時應用歸檔
alter database recover managed standby database disconnect from session using current logfile;