Theoretical question on having "stand by" instance on 4 node RAC cluster.

We have been having discussions on how we can improve the overall stability and performance of our RAC cluster. Currently we are running multiple databases on a 2 node cluster. The idea is that we will add two more nodes to the cluster and then spread the instances across the 4 nodes but only have two active and 1 as a standby in the event of node failure.
In other words:
Node1, Node2, and Node3 would run DB1
Node 4 Node3 and Node2 would run DB2
Additionally DB1_Instance3 would be shutdown on Node3 and only started if Node1 or 2 failed.
This would be the same for DB2 where DB2_Instance3 on Node2 would only be started if Node3 or Node4 failed.
Underneath them all would be the same ASM database shared for all 4 nodes.
Has anyone seen such a configuration? Is anyone aware of a white paper that discusses it.

the parameter active_instance_count is a 9i parameter and should only be set if you want to run RAC with a 2 node cluster - one instance active (all users connected here) and the second instance up but no one actively using it. IF instance one goes away, all work is move to instance 2. This is hot failover .
If you are adding a new instance to a rac database, you are recommended to use DBCA or EM to add the instance. If you do not want to have users connected to the instance all the time, you can either leave it running but do not enable any services on it until you need it or stop the instance with srvctl stop instance. The cluster will not try to restart the instance automatically.
The services option, when you create a service, you define which instances you wish it to run on. You can dynamically change where it runs. For the end user, they just connect to the service, the listener directs the connection to the least loaded instance providing the service at connect time. See the workload management with RAC 10g white paper on otn (otn.oracle.com/rac) or Chapter 6 of admin & deploy guide

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    RMAN-00571: ===========================================================
    RMAN-03002: failure of Duplicate Db command at 08/28/2011 13:33:55
    RMAN-03015: error occurred in stored script Memory Script
    RMAN-04006: error from auxiliary database: ORA-12514: TNS:listener does not currently know of service requested in connect descriptorAlso find my listener services.
    [oracle@rac1 ~]$ lsnrctl status
    LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 29-AUG-2011 10:56:24
    Copyright (c) 1991, 2009, Oracle.  All rights reserved.
    Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
    STATUS of the LISTENER
    Alias                     LISTENER
    Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
    Start Date                18-AUG-2011 10:35:07
    Uptime                    11 days 0 hr. 21 min. 17 sec
    Trace Level               off
    Security                  ON: Local OS Authentication
    SNMP                      OFF
    Listener Parameter File   /u01/11.2.0/grid/network/admin/listener.ora
    Listener Log File         /u01/app/oracle/diag/tnslsnr/rac1/listener/alert/log.xml
    Listening Endpoints Summary...
      (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
      (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.8.123)(PORT=1521)))
      (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.8.127)(PORT=1521)))
    Services Summary...
    Service "+ASM" has 1 instance(s).
      Instance "+ASM1", status READY, has 1 handler(s) for this service...
    Service "RACDB" has 1 instance(s).
      Instance "RACDB1", status READY, has 1 handler(s) for this service...
    Service "RACDBXDB" has 1 instance(s).
      Instance "RACDB1", status READY, has 1 handler(s) for this service...
    Service "stand" has 2 instance(s).
      Instance "stand", status UNKNOWN, has 1 handler(s) for this service...
      Instance "stand", status BLOCKED, has 1 handler(s) for this service...
    Service "testdb" has 1 instance(s).
      Instance "RACDB1", status READY, has 1 handler(s) for this service...
    Service "testdb1" has 1 instance(s).
      Instance "RACDB1", status READY, has 1 handler(s) for this service...
    The command completed successfully
    [oracle@rac1 ~]$ lsnrctl services
    LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 29-AUG-2011 10:56:35
    Copyright (c) 1991, 2009, Oracle.  All rights reserved.
    Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
    Services Summary...
    Service "+ASM" has 1 instance(s).
      Instance "+ASM1", status READY, has 1 handler(s) for this service...
        Handler(s):
          "DEDICATED" established:0 refused:0 state:ready
             LOCAL SERVER
    Service "RACDB" has 1 instance(s).
      Instance "RACDB1", status READY, has 1 handler(s) for this service...
        Handler(s):
          "DEDICATED" established:3 refused:0 state:ready
             LOCAL SERVER
    Service "RACDBXDB" has 1 instance(s).
      Instance "RACDB1", status READY, has 1 handler(s) for this service...
        Handler(s):
          "D000" established:0 refused:0 current:0 max:1022 state:ready
             DISPATCHER <machine: rac1.qfund.net, pid: 3975>
             (ADDRESS=(PROTOCOL=tcp)(HOST=rac1.qfund.net)(PORT=43731))
    Service "stand" has 2 instance(s).
      Instance "stand", status UNKNOWN, has 1 handler(s) for this service...
        Handler(s):
          "DEDICATED" established:0 refused:0
             LOCAL SERVER
      Instance "stand", status BLOCKED, has 1 handler(s) for this service...
        Handler(s):
          "DEDICATED" established:669 refused:0 state:ready
             LOCAL SERVER
    Service "testdb" has 1 instance(s).
      Instance "RACDB1", status READY, has 1 handler(s) for this service...
        Handler(s):
          "DEDICATED" established:3 refused:0 state:ready
             LOCAL SERVER
    Service "testdb1" has 1 instance(s).
      Instance "RACDB1", status READY, has 1 handler(s) for this service...
        Handler(s):
          "DEDICATED" established:3 refused:0 state:ready
             LOCAL SERVER
    The command completed successfully
    [oracle@rac1 ~]$Tnsnames.ora file content.
    RACDB =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = racdb-scan.qfund.net)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = RACDB)
    #QFUNDRAC =
    stand =
      (DESCRIPTION =
        (ADDRESS_LIST =
          (ADDRESS = (PROTOCOL = TCP)(HOST= racdb-scan.qfund.net)(PORT = 1521))
        (CONNECT_DATA =
          (SERVICE_NAME = stand)
          (UR = A)
      )Please help me how to solve this problem.
    Thanks & Regards,
    Poorna Prasad.S

    Hi,
    Please find the output from v$dataguard_status from primary and standby
    Primary
    SQL> select message from v$dataguard_status;
    MESSAGE
    ARC0: Archival started
    ARCH: LGWR is scheduled to archive destination LOG_ARCHIVE_DEST_2 after log swit
    ch
    ARCH: Beginning to archive thread 1 sequence 214 (4604093-4604095)
    Error 12514 received logging on to the standby
    ARCH: Error 12514 Creating archive log file to 'stand'
    ARCH: Completed archiving thread 1 sequence 214 (4604093-4604095)
    ARC1: Archival started
    ARC2: Archival started
    ARC3: Archival started
    MESSAGE
    ARC4: Archival started
    ARC5: Archival started
    ARC6: Archival started
    ARC7: Archival started
    ARC8: Archival started
    ARC9: Archival started
    ARCa: Archival started
    ARCb: Archival started
    ARCc: Archival started
    ARCd: Archival started
    ARCe: Archival started
    MESSAGE
    ARCf: Archival started
    ARCg: Archival started
    ARCh: Archival started
    ARCi: Archival started
    ARCj: Archival started
    ARCk: Archival started
    ARCl: Archival started
    ARCm: Archival started
    ARCn: Archival started
    ARCo: Archival started
    ARCp: Archival started
    MESSAGE
    ARCq: Archival started
    ARCr: Archival started
    ARCs: Archival started
    ARC1: Becoming the 'no FAL' ARCH
    ARC1: Becoming the 'no SRL' ARCH
    ARC2: Becoming the heartbeat ARCH
    ARC7: Beginning to archive thread 1 sequence 215 (4604095-4604191)
    ARC7: Completed archiving thread 1 sequence 215 (4604095-4604191)
    ARC5: Beginning to archive thread 1 sequence 216 (4604191-4604471)
    ARC5: Completed archiving thread 1 sequence 216 (4604191-4604471)
    ARCt: Archival started
    MESSAGE
    ARC3: Beginning to archive thread 1 sequence 217 (4604471-4605358)
    ARC3: Completed archiving thread 1 sequence 217 (4604471-4605358)
    LNS: Standby redo logfile selected for thread 1 sequence 217 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 217
    LNS: Completed archiving log 1 thread 1 sequence 217
    LNS: Standby redo logfile selected for thread 1 sequence 218 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 218
    MESSAGE
    LNS: Completed archiving log 2 thread 1 sequence 218
    ARC4: Beginning to archive thread 1 sequence 218 (4605358-4625984)
    ARC4: Completed archiving thread 1 sequence 218 (4605358-4625984)
    LNS: Standby redo logfile selected for thread 1 sequence 219 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 219
    LNS: Completed archiving log 1 thread 1 sequence 219
    ARC5: Beginning to archive thread 1 sequence 219 (4625984-4641358)
    ARC5: Completed archiving thread 1 sequence 219 (4625984-4641358)
    LNS: Standby redo logfile selected for thread 1 sequence 220 for destination LOG
    MESSAGE
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 220
    LNS: Completed archiving log 2 thread 1 sequence 220
    ARC6: Beginning to archive thread 1 sequence 220 (4641358-4644757)
    ARC6: Completed archiving thread 1 sequence 220 (4641358-4644757)
    LNS: Standby redo logfile selected for thread 1 sequence 221 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 221
    LNS: Completed archiving log 1 thread 1 sequence 221
    MESSAGE
    ARC7: Beginning to archive thread 1 sequence 221 (4644757-4648306)
    ARC7: Completed archiving thread 1 sequence 221 (4644757-4648306)
    LNS: Standby redo logfile selected for thread 1 sequence 222 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 222
    LNS: Completed archiving log 2 thread 1 sequence 222
    ARC8: Beginning to archive thread 1 sequence 222 (4648306-4655287)
    ARC8: Completed archiving thread 1 sequence 222 (4648306-4655287)
    LNS: Standby redo logfile selected for thread 1 sequence 223 for destination LOG
    _ARCHIVE_DEST_2
    MESSAGE
    LNS: Beginning to archive log 1 thread 1 sequence 223
    LNS: Completed archiving log 1 thread 1 sequence 223
    ARC9: Beginning to archive thread 1 sequence 223 (4655287-4655307)
    ARC9: Completed archiving thread 1 sequence 223 (4655287-4655307)
    LNS: Standby redo logfile selected for thread 1 sequence 224 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 224
    LNS: Attempting destination LOG_ARCHIVE_DEST_2 network reconnect (3135)
    LNS: Destination LOG_ARCHIVE_DEST_2 network reconnect abandoned
    MESSAGE
    Error 3135 for archive log file 2 to 'stand'
    LNS: Failed to archive log 2 thread 1 sequence 224 (3135)
    ARC3: Beginning to archive thread 1 sequence 224 (4655307-4660812)
    ARC3: Completed archiving thread 1 sequence 224 (4655307-4660812)
    LNS: Standby redo logfile selected for thread 1 sequence 224 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 224
    LNS: Completed archiving log 2 thread 1 sequence 224
    LNS: Standby redo logfile selected for thread 1 sequence 225 for destination LOG
    _ARCHIVE_DEST_2
    MESSAGE
    LNS: Beginning to archive log 1 thread 1 sequence 225
    LNS: Completed archiving log 1 thread 1 sequence 225
    ARC4: Beginning to archive thread 1 sequence 225 (4660812-4660959)
    ARC4: Completed archiving thread 1 sequence 225 (4660812-4660959)
    LNS: Standby redo logfile selected for thread 1 sequence 226 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 226
    LNS: Completed archiving log 2 thread 1 sequence 226
    ARC5: Beginning to archive thread 1 sequence 226 (4660959-4664925)
    MESSAGE
    LNS: Standby redo logfile selected for thread 1 sequence 227 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 227
    ARC5: Completed archiving thread 1 sequence 226 (4660959-4664925)
    LNS: Completed archiving log 1 thread 1 sequence 227
    LGWR: Error 1089 closing archivelog file 'stand'
    ARC6: Beginning to archive thread 1 sequence 227 (4664925-4668448)
    ARC6: Completed archiving thread 1 sequence 227 (4664925-4668448)
    ARC5: Beginning to archive thread 1 sequence 228 (4668448-4670392)
    ARC5: Completed archiving thread 1 sequence 228 (4668448-4670392)
    MESSAGE
    LNS: Standby redo logfile selected for thread 1 sequence 228 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 228
    LNS: Completed archiving log 2 thread 1 sequence 228
    ARC4: Standby redo logfile selected for thread 1 sequence 227 for destination LO
    G_ARCHIVE_DEST_2
    LNS: Standby redo logfile selected for thread 1 sequence 229 for destination LOG
    _ARCHIVE_DEST_2
    MESSAGE
    LNS: Beginning to archive log 1 thread 1 sequence 229
    LNS: Completed archiving log 1 thread 1 sequence 229
    ARC3: Beginning to archive thread 1 sequence 229 (4670392-4670659)
    ARC3: Completed archiving thread 1 sequence 229 (4670392-4670659)
    LNS: Standby redo logfile selected for thread 1 sequence 230 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 230
    LNS: Completed archiving log 2 thread 1 sequence 230
    ARC4: Beginning to archive thread 1 sequence 230 (4670659-4670679)
    ARC4: Completed archiving thread 1 sequence 230 (4670659-4670679)
    MESSAGE
    LNS: Standby redo logfile selected for thread 1 sequence 231 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 231
    LNS: Completed archiving log 1 thread 1 sequence 231
    ARC5: Beginning to archive thread 1 sequence 231 (4670679-4690371)
    ARC5: Completed archiving thread 1 sequence 231 (4670679-4690371)
    LNS: Standby redo logfile selected for thread 1 sequence 232 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 232
    MESSAGE
    LNS: Completed archiving log 2 thread 1 sequence 232
    ARC6: Beginning to archive thread 1 sequence 232 (4690371-4712566)
    ARC6: Completed archiving thread 1 sequence 232 (4690371-4712566)
    LNS: Standby redo logfile selected for thread 1 sequence 233 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 233
    LNS: Completed archiving log 1 thread 1 sequence 233
    ARC7: Beginning to archive thread 1 sequence 233 (4712566-4731626)
    LNS: Standby redo logfile selected for thread 1 sequence 234 for destination LOG
    _ARCHIVE_DEST_2
    MESSAGE
    LNS: Beginning to archive log 2 thread 1 sequence 234
    ARC7: Completed archiving thread 1 sequence 233 (4712566-4731626)
    LNS: Completed archiving log 2 thread 1 sequence 234
    ARC8: Beginning to archive thread 1 sequence 234 (4731626-4753780)
    LNS: Standby redo logfile selected for thread 1 sequence 235 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 235
    ARC8: Completed archiving thread 1 sequence 234 (4731626-4753780)
    LNS: Attempting destination LOG_ARCHIVE_DEST_2 network reconnect (3135)
    MESSAGE
    LNS: Destination LOG_ARCHIVE_DEST_2 network reconnect abandoned
    Error 3135 for archive log file 1 to 'stand'
    LNS: Failed to archive log 1 thread 1 sequence 235 (3135)
    ARC9: Beginning to archive thread 1 sequence 235 (4753780-4765626)
    ARC9: Completed archiving thread 1 sequence 235 (4753780-4765626)
    LNS: Standby redo logfile selected for thread 1 sequence 235 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 235
    LNS: Completed archiving log 1 thread 1 sequence 235
    LNS: Standby redo logfile selected for thread 1 sequence 236 for destination LOG
    MESSAGE
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 236
    LNS: Attempting destination LOG_ARCHIVE_DEST_2 network reconnect (3135)
    LNS: Destination LOG_ARCHIVE_DEST_2 network reconnect abandoned
    Error 3135 for archive log file 2 to 'stand'
    LNS: Failed to archive log 2 thread 1 sequence 236 (3135)
    ARCa: Beginning to archive thread 1 sequence 236 (4765626-4768914)
    ARCa: Completed archiving thread 1 sequence 236 (4765626-4768914)
    LNS: Standby redo logfile selected for thread 1 sequence 236 for destination LOG
    _ARCHIVE_DEST_2
    MESSAGE
    LNS: Beginning to archive log 2 thread 1 sequence 236
    LNS: Completed archiving log 2 thread 1 sequence 236
    LNS: Standby redo logfile selected for thread 1 sequence 237 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 237
    LNS: Completed archiving log 1 thread 1 sequence 237
    ARCb: Beginning to archive thread 1 sequence 237 (4768914-4770603)
    ARCb: Completed archiving thread 1 sequence 237 (4768914-4770603)
    LNS: Standby redo logfile selected for thread 1 sequence 238 for destination LOG
    MESSAGE
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 238
    LNS: Completed archiving log 2 thread 1 sequence 238
    ARCc: Beginning to archive thread 1 sequence 238 (4770603-4770651)
    ARCc: Completed archiving thread 1 sequence 238 (4770603-4770651)
    LNS: Standby redo logfile selected for thread 1 sequence 239 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 239
    LNS: Completed archiving log 1 thread 1 sequence 239
    MESSAGE
    ARCd: Beginning to archive thread 1 sequence 239 (4770651-4773918)
    ARCd: Completed archiving thread 1 sequence 239 (4770651-4773918)
    LNS: Standby redo logfile selected for thread 1 sequence 240 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 240
    LNS: Completed archiving log 2 thread 1 sequence 240
    ARCe: Beginning to archive thread 1 sequence 240 (4773918-4773976)
    ARCe: Completed archiving thread 1 sequence 240 (4773918-4773976)
    LNS: Standby redo logfile selected for thread 1 sequence 241 for destination LOG
    _ARCHIVE_DEST_2
    MESSAGE
    LNS: Beginning to archive log 1 thread 1 sequence 241
    LNS: Attempting destination LOG_ARCHIVE_DEST_2 network reconnect (3135)
    LNS: Destination LOG_ARCHIVE_DEST_2 network reconnect abandoned
    Error 3135 for archive log file 1 to 'stand'
    LNS: Failed to archive log 1 thread 1 sequence 241 (3135)
    ARC3: Beginning to archive thread 1 sequence 241 (4773976-4774673)
    ARC3: Completed archiving thread 1 sequence 241 (4773976-4774673)
    LNS: Standby redo logfile selected for thread 1 sequence 241 for destination LOG
    _ARCHIVE_DEST_2
    MESSAGE
    LNS: Beginning to archive log 1 thread 1 sequence 241
    LNS: Completed archiving log 1 thread 1 sequence 241
    LNS: Standby redo logfile selected for thread 1 sequence 242 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 242
    LNS: Completed archiving log 2 thread 1 sequence 242
    ARC4: Beginning to archive thread 1 sequence 242 (4774673-4776045)
    ARC4: Completed archiving thread 1 sequence 242 (4774673-4776045)
    LNS: Standby redo logfile selected for thread 1 sequence 243 for destination LOG
    _ARCHIVE_DEST_2
    MESSAGE
    LNS: Beginning to archive log 1 thread 1 sequence 243
    LNS: Completed archiving log 1 thread 1 sequence 243
    ARC5: Beginning to archive thread 1 sequence 243 (4776045-4776508)
    ARC5: Completed archiving thread 1 sequence 243 (4776045-4776508)
    LNS: Standby redo logfile selected for thread 1 sequence 244 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 244
    LNS: Attempting destination LOG_ARCHIVE_DEST_2 network reconnect (3135)
    LNS: Destination LOG_ARCHIVE_DEST_2 network reconnect abandoned
    MESSAGE
    Error 3135 for archive log file 2 to 'stand'
    LNS: Failed to archive log 2 thread 1 sequence 244 (3135)
    ARC6: Beginning to archive thread 1 sequence 244 (4776508-4778741)
    ARC6: Completed archiving thread 1 sequence 244 (4776508-4778741)
    ARC7: Beginning to archive thread 1 sequence 245 (4778741-4778781)
    ARC7: Completed archiving thread 1 sequence 245 (4778741-4778781)
    ARC8: Beginning to archive thread 1 sequence 246 (4778781-4778787)
    ARC8: Completed archiving thread 1 sequence 246 (4778781-4778787)
    ARC9: Standby redo logfile selected for thread 1 sequence 244 for destination LO
    G_ARCHIVE_DEST_2
    MESSAGE
    ARC3: Beginning to archive thread 1 sequence 247 (4778787-4778934)
    LNS: Standby redo logfile selected for thread 1 sequence 247 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 247
    ARC3: Completed archiving thread 1 sequence 247 (4778787-4778934)
    LNS: Completed archiving log 1 thread 1 sequence 247
    LNS: Standby redo logfile selected for thread 1 sequence 248 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 248
    MESSAGE
    ARC4: Beginning to archive thread 1 sequence 248 (4778934-4781018)
    LNS: Completed archiving log 2 thread 1 sequence 248
    ARC4: Completed archiving thread 1 sequence 248 (4778934-4781018)
    LNS: Standby redo logfile selected for thread 1 sequence 249 for destination LOG
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 1 thread 1 sequence 249
    LNS: Completed archiving log 1 thread 1 sequence 249
    ARC5: Beginning to archive thread 1 sequence 249 (4781018-4781033)
    ARC5: Completed archiving thread 1 sequence 249 (4781018-4781033)
    LNS: Standby redo logfile selected for thread 1 sequence 250 for destination LOG
    MESSAGE
    _ARCHIVE_DEST_2
    LNS: Beginning to archive log 2 thread 1 sequence 250
    233 rows selected.
    SQL>Standby
    SQL> select message from v$dataguard_status;
    MESSAGE
    ARC0: Archival started
    ARC1: Archival started
    ARC2: Archival started
    ARC3: Archival started
    ARC4: Archival started
    ARC5: Archival started
    ARC6: Archival started
    ARC7: Archival started
    ARC8: Archival started
    ARC9: Archival started
    ARCa: Archival started
    MESSAGE
    ARCb: Archival started
    ARCc: Archival started
    ARCd: Archival started
    ARCe: Archival started
    ARCf: Archival started
    ARCg: Archival started
    ARCh: Archival started
    ARCi: Archival started
    ARCj: Archival started
    ARCk: Archival started
    ARCl: Archival started
    MESSAGE
    ARCm: Archival started
    ARCn: Archival started
    ARCo: Archival started
    ARCp: Archival started
    ARCq: Archival started
    ARCr: Archival started
    ARCs: Archival started
    ARC1: Becoming the 'no FAL' ARCH
    ARC2: Becoming the heartbeat ARCH
    Error 1017 received logging on to the standby
    FAL[client, ARC2]: Error 16191 connecting to RACDB for fetching gap sequence
    MESSAGE
    ARCt: Archival started
    Attempt to start background Managed Standby Recovery process
    MRP0: Background Managed Standby Recovery process started
    Managed Standby Recovery starting Real Time Apply
    Media Recovery Log /u02/stand/archive/1_119_758280976.arc
    Media Recovery Waiting for thread 2 sequence 183
    RFS[1]: Assigned to RFS process 30110
    RFS[1]: Identified database type as 'physical standby': Client is ARCH pid 25980
    RFS[2]: Assigned to RFS process 30118
    RFS[2]: Identified database type as 'physical standby': Client is ARCH pid 26008
    RFS[3]: Assigned to RFS process 30124
    MESSAGE
    RFS[3]: Identified database type as 'physical standby': Client is ARCH pid 26029
    RFS[4]: Assigned to RFS process 30130
    RFS[4]: Identified database type as 'physical standby': Client is ARCH pid 26021
    ARC4: Beginning to archive thread 1 sequence 244 (4776508-4778741)
    ARC4: Completed archiving thread 1 sequence 244 (0-0)
    RFS[5]: Assigned to RFS process 30144
    RFS[5]: Identified database type as 'physical standby': Client is LGWR ASYNC pid
    26128
    Primary database is in MAXIMUM PERFORMANCE mode
    ARC5: Beginning to archive thread 1 sequence 247 (4778787-4778934)
    MESSAGE
    ARC5: Completed archiving thread 1 sequence 247 (0-0)
    ARC6: Beginning to archive thread 1 sequence 248 (4778934-4781018)
    ARC6: Completed archiving thread 1 sequence 248 (0-0)
    ARC7: Beginning to archive thread 1 sequence 249 (4781018-4781033)
    ARC7: Completed archiving thread 1 sequence 249 (0-0)
    58 rows selected.
    SQL>also find the output for the primary alertlog file.
    Tue Aug 30 10:45:41 2011
    LNS: Attempting destination LOG_ARCHIVE_DEST_2 network reconnect (3135)
    LNS: Destination LOG_ARCHIVE_DEST_2 network reconnect abandoned
    Errors in file /u01/app/oracle/diag/rdbms/racdb/RACDB1/trace/RACDB1_nsa2_26128.trc:
    ORA-03135: connection lost contact
    Error 3135 for archive log file 2 to 'stand'
    Errors in file /u01/app/oracle/diag/rdbms/racdb/RACDB1/trace/RACDB1_nsa2_26128.trc:
    ORA-03135: connection lost contact
    LNS: Failed to archive log 2 thread 1 sequence 244 (3135)
    Errors in file /u01/app/oracle/diag/rdbms/racdb/RACDB1/trace/RACDB1_nsa2_26128.trc:
    ORA-03135: connection lost contact
    Tue Aug 30 10:50:25 2011
    Thread 1 advanced to log sequence 245 (LGWR switch)
      Current log# 1 seq# 245 mem# 0: +ASM_DATA1/racdb/onlinelog/group_1.268.758280977
      Current log# 1 seq# 245 mem# 1: +ASM_DATA2/racdb/onlinelog/group_1.265.758280979
    Tue Aug 30 10:50:25 2011
    Archived Log entry 612 added for thread 1 sequence 244 ID 0x2d0e0689 dest 1:
    Thread 1 cannot allocate new log, sequence 246
    Checkpoint not complete
      Current log# 1 seq# 245 mem# 0: +ASM_DATA1/racdb/onlinelog/group_1.268.758280977
      Current log# 1 seq# 245 mem# 1: +ASM_DATA2/racdb/onlinelog/group_1.265.758280979
    Thread 1 advanced to log sequence 246 (LGWR switch)
      Current log# 2 seq# 246 mem# 0: +ASM_DATA1/racdb/onlinelog/group_2.269.758280979
      Current log# 2 seq# 246 mem# 1: +ASM_DATA2/racdb/onlinelog/group_2.266.758280981
    Tue Aug 30 10:50:27 2011
    Archived Log entry 613 added for thread 1 sequence 245 ID 0x2d0e0689 dest 1:
    Thread 1 cannot allocate new log, sequence 247
    Checkpoint not complete
      Current log# 2 seq# 246 mem# 0: +ASM_DATA1/racdb/onlinelog/group_2.269.758280979
      Current log# 2 seq# 246 mem# 1: +ASM_DATA2/racdb/onlinelog/group_2.266.758280981
    Thread 1 advanced to log sequence 247 (LGWR switch)
      Current log# 1 seq# 247 mem# 0: +ASM_DATA1/racdb/onlinelog/group_1.268.758280977
      Current log# 1 seq# 247 mem# 1: +ASM_DATA2/racdb/onlinelog/group_1.265.758280979
    Tue Aug 30 10:50:30 2011
    Archived Log entry 614 added for thread 1 sequence 246 ID 0x2d0e0689 dest 1:
    Tue Aug 30 10:51:37 2011
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    Sorry to make you waiting. Thought the thread is frozen after the question is answered.
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