Dataguard监控检查

查询Dataguard的状态：

set linesize 200
select d.DB_UNIQUE_NAME,d.open_mode,d.log_mode,d.DATABASE_ROLE,d.PROTECTION_MODE from v$database d;

DB_UNIQUE_NAME		       OPEN_MODE	    LOG_MODE	 DATABASE_ROLE	  PROTECTION_MODE
------------------------------ -------------------- ------------ ---------------- --------------------
orcl_st 		       MOUNTED		    ARCHIVELOG	 PHYSICAL STANDBY MAXIMUM PERFORMANCE

查询最近每个归档目标的状态，每个目标的归档文件应该一样，如果不一样，status不是“VALID”。

set linesize 200
 col DESTINATION form a40
SELECT DESTINATION, STATUS, ARCHIVED_THREAD#, ARCHIVED_SEQ# FROM V$ARCHIVE_DEST_STATUS WHERE STATUS <> 'DEFERRED' AND STATUS <> 'INACTIVE';

DESTINATION				 STATUS 	ARCHIVED_THREAD#	 ARCHIVED_SEQ#
---------------------------------------- --------- --------------------- ---------------------
/u01/app/oracle/oradata/orcl/archivelog  VALID			       1		   106
orcl_st 				 VALID			       1		   106

查询最近的一次归档日志序号：

SQL> SQL> SELECT MAX(SEQUENCE#), THREAD# FROM V$ARCHIVED_LOG WHERE RESETLOGS_CHANGE# = (SELECT MAX(RESETLOGS_CHANGE#) FROM V$ARCHIVED_LOG) GROUP BY THREAD#;


       MAX(SEQUENCE#)		    THREAD#
--------------------- ---------------------
		  106			  1

检查已经归档到目标1但没有归档到目标2的归档日志:

SELECT LOCAL.THREAD#, LOCAL.SEQUENCE# FROM  (SELECT THREAD#, SEQUENCE# FROM V$ARCHIVED_LOG WHERE DEST_ID=1)  LOCAL WHERE  LOCAL.SEQUENCE# NOT IN  (SELECT SEQUENCE# FROM V$ARCHIVED_LOG WHERE DEST_ID=2 AND  THREAD# = LOCAL.THREAD#);

检查gap

SELECT STATUS, GAP_STATUS FROM V$ARCHIVE_DEST_STATUS WHERE DEST_ID = 2;

查询日志应用速度

COLUMN NAME FORMAT A24
COLUMN VALUE FORMAT A16
COLUMN DATUM_TIME FORMAT A24
SELECT NAME, VALUE, DATUM_TIME FROM V$DATAGUARD_STATS;

在Redo源数据库执行以下SQL语句显示目的地2的响应时间柱状图

 select frequency,duration    from v$redo_dest_resp_histogram       where dest_id = 2       and frequency > 1;