Last archive log

Question

Hi All,
sorry if i can not write English well. and i am beginner in Data guard(DG)
i established Data guard . primary in server1 and DG in server2. dont enable redo log for DG.
when an archive log created in server1 , immediate copy this archive log to server2 automatically.
but for example when we have 10 archive log in server1 . we have 11 archive log in server2. i dont know the last archive is archive log or another file type but this name is same archive log file name format.
for example when created O1_MF_1_69_689MFJSW_.ARC (40 MB size). this file copy to server2 but
in server2 created O1_MF_1_70_689MFJSW_.ARC . and i think when DG database is shutdown, last archive log
in this case O1_MF_1_70_689MFJSW_.ARC deleted automatically. my question is : what is this(last archive that created in server2) . this is normal or no?
Best Regards
Hassan

Answer 1

hi,
Can you paste the result of the below query.. Run it in primary
SET PAGESIZE 124
COL DB_NAME FORMAT A8
COL HOSTNAME FORMAT A12
COL LOG_ARCHIVED FORMAT 999999
COL LOG_APPLIED FORMAT 999999
COL LOG_GAP FORMAT 999
COL APPLIED_TIME FORMAT A12
COL LOG_DAY FORMAT A2
SELECT DB_NAME, HOSTNAME, LOG_ARCHIVED, LOG_APPLIED,APPLIED_TIME,
LOG_ARCHIVED-LOG_APPLIED LOG_GAP,LAG_DAY,LAG_TIME
FROM
SELECT NAME DB_NAME
FROM V$DATABASE
SELECT UPPER(SUBSTR(HOST_NAME,1,(DECODE(INSTR(HOST_NAME,'.'),0,LENGTH(HOST_NAME),
(INSTR(HOST_NAME,'.')-1))))) HOSTNAME
FROM V$INSTANCE
SELECT MAX(SEQUENCE#) LOG_ARCHIVED
FROM V$ARCHIVED_LOG WHERE DEST_ID=1 AND ARCHIVED='YES'
SELECT MAX(SEQUENCE#) LOG_APPLIED
FROM V$ARCHIVED_LOG WHERE DEST_ID=2 AND APPLIED='YES'
SELECT TO_CHAR(MAX(COMPLETION_TIME),'DD-MON/HH24:MI') APPLIED_TIME
FROM V$ARCHIVED_LOG WHERE DEST_ID=2 AND APPLIED='YES'
SELECT floor((sysdate - MAX(COMPLETION_TIME))*24*60) LAG_TIME
FROM V$ARCHIVED_LOG WHERE DEST_ID=2 AND APPLIED='YES'
SELECT '+'||floor((sysdate - MAX(COMPLETION_TIME))*24) LAG_DAY
FROM V$ARCHIVED_LOG WHERE DEST_ID=2 AND APPLIED='YES'
);thanks,
baskar.l