I checked other sites(metalink inclusive) for steps in creating logical standby and they all list log_archive_dest_1, log_archive_dest_2 and log_archive_dest_3 specified. Do i need to have all three mandatory and is the cause of my problem? Please advice. Could anyone please post their logical standby log_archive_dest_* parameter settings for primary and logical standby configuration.Thanks. On Tue, Aug 9, 2011 at 2:48 PM, sundar mahadevan < sundarmahadevan82@xxxxxxxxx> wrote: > Hi All, > Good day. I set up a logical standby but real time apply does not work. If > i switch the logfile, then the redo log file gets archive and get applied > over. I looked at the various sql commands here: > http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/manage_ls.htm#CHDGBCGIto > see what is wrong but nothing comes up. Appreciate your help.Thanks in > advance. > > Few responses for the sql statements: > > On primary: > > 14:34:15 sys@MFPROD SQL>select current_scn from v$database; > > CURRENT_SCN > ----------------------- > 5288795814937 > > Parameter settings: > > log_archive_config string > dg_config=(MFPROD,MFPRODLS) > log_archive_dest_1 string LOCATION=/u01/arch/mfprod > VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=MFPROD > log_archive_dest_3 string SERVICE=mfprod_logstdby > arch ASYNC VALID_FOR=(ONLINE_LOGFILE, ALL_ROLES) DB_UNIQUE_NAME=MFPRODLS > > On Logical standby: > > 14:32:20 sys@MFPRODLS SQL>SELECT DEST_ID, RECOVERY_MODE FROM > V$ARCHIVE_DEST_STATUS WHERE DEST_ID=3; > > DEST_ID RECOVERY_MODE > -------- ----------------------- > 3 LOGICAL REAL TIME APPLY > > 14:47:02 sys@MFPRODLS SQL>SELECT REALTIME_APPLY FROM V$LOGSTDBY_STATE; > > REALTIME_APPLY > --------------- > Y > > Parameter settings: > > log_archive_config string > dg_config=(MFPROD,MFPRODLS) > log_archive_dest_3 string > LOCATION=/u01/arch/mfprod_stdby VALID_FOR=(STANDBY_LOGFILES,STANDBY_ROLE) > DB_UNIQUE_NAME=MFPRODLS > > 14:38:37 sys@MFPRODLS SQL>SELECT APPLIED_SCN, LATEST_SCN, MINING_SCN, > RESTART_SCN FROM V$LOGSTDBY_PROGRESS; > > APPLIED_SCN LATEST_SCN MINING_SCN > RESTART_SCN > -------------------- -------------------- -------------------- > -------------------- > 5288795813413 5288795813413 5288795813414 > 528879581341 >