Dataguard GAP showing in Minus(-)

Question

hi there,
we have just migrated from oracle 9.2.0.3.0 to 11.2.3.0 on IBM - AIX
DR also have been migrated from 9.2.0.3.0 to 11.2.3.0.
previously we used to check for the DR GAP count with the help of below query on 9i.
{code}
SELECT ARCH.THREAD# "Thread", ARCH.SEQUENCE# "Last Sequence Received", APPL.SEQUENCE# "Last Sequence Applied", (ARCH.SEQUENCE# - APPL.SEQUENCE#) "Difference"
FROM
(SELECT THREAD# ,SEQUENCE# FROM V$ARCHIVED_LOG WHERE (THREAD#,FIRST_TIME ) IN (SELECT THREAD#,MAX(FIRST_TIME) FROM V$ARCHIVED_LOG GROUP BY THREAD#)) ARCH,
(SELECT THREAD# ,SEQUENCE# FROM V$LOG_HISTORY WHERE (THREAD#,FIRST_TIME ) IN (SELECT THREAD#,MAX(FIRST_TIME) FROM V$LOG_HISTORY GROUP BY THREAD#)) APPL
WHERE
ARCH.THREAD# = APPL.THREAD#
ORDER BY 1;
{code}
{code}
Thread Last Sequence Received Last Sequence Applied Difference
1            
403280           
404811 
-1531
{code}
so why its showing the difference in Minus.
MRP process is down when there was  a GAP of 7000 logs. and some 1000 logs have been copied manually. and below command have been fired on DR site
{code}
alter database recover standby database
{code}
so friends what is the issue here. need help.

Answer 1

V$LOG_HISTORY displays log history information from the control file.
V$LOG_HISTORY is obsolete and retained for backwards compatibility only.
V$ARCHIVED_LOG displays archived log information from the control file, including archive log names. An archive log record is inserted after the online redo log is successfully archived or cleared (name column is NULL if the log was cleared). If the log is archived twice, there will be two archived log records with the same THREAD#, SEQUENCE#, and FIRST_CHANGE#, but with a different name. An archive log record is also inserted when an archive log is restored from a backup set or a copy and whenever a copy of a log is made with the RMAN COPY command.
How to Clean-Up Entries in V$LOG_HISTORY, V$ARCHIVED_LOG (Doc ID 1060139.6)
Best Regards
mseberg