11.2 DB & Data Guard : ORA-16014 how to archive a sequence?

Hi,
I've installed 11.2 Oracle Database in my laptop with Oracle Enterprise Linux 5.3 and I have created two standby databases, orcl (primary) and orclstby (physical standby). I performed a switchover to orclstby and consequently, orclstby was the new primary and orcl the physical standby, I checked those values with SQLPlus executing the select database_role from v$database statement, so, there were no problems during the switchover.I also shutteddown and started both primary and stanby databases to check all was fine.
Today, I've tried to start the environment again and I've encountered the following problem during the startup of the primary database:
[oracle@mredon-es ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Wed Oct 21 17:34:21 2009
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 839282688 bytes
Fixed Size 2217992 bytes
Variable Size 507512824 bytes
Database Buffers 322961408 bytes
Redo Buffers 6590464 bytes
Database mounted.
ORA-03113: end-of-file on communication channel
Process ID: 5562
Session ID: 9 Serial number: 3
I've checked the newest log created and this is its content:
Dump file /u01/app/oracle/product/11.2.0/dbhome_1/rdbms/log/orclstby_ora_5382.trc
*** 2009-10-21 17:34:30.467
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1
System name: Linux
Node name: mredon-es.us.oracle.com
Release: 2.6.18-128.el5
Version: #1 SMP Wed Jan 21 08:45:05 EST 2009
Machine: x86_64
Instance name: orclstby
Redo thread mounted by this instance: 0 <none>
Oracle process number: 0
Unix process pid: 5382, image: [email protected]
*** 2009-10-21 17:34:30.526
2009-10-21 17:34:30.457: [ default]utgdv:2:ocr loc file /etc/oracle/olr.loc cann
ot be opened. errno 2
2009-10-21 17:34:30.527: [ default]utgdv:2:ocr loc file /etc/oracle/ocr.loc cann
ot be opened. errno 2
I've searched in Metalink information about ocr.loc and olr.loc and they seem to be part of an Oracle RAC installation, I don't know why the database needs these files to start if I am using single instance...
Any idea would be kindly appreciated because I'm a bit confused and I don't really know what steps I am suppposed to take in order to solve this problem.
Thanks in advance.
Edited by: mredon on Oct 26, 2009 5:22 AM
Reason: title of the post changed

sorry for the delay, here is the alert log:
<msg time='2009-10-21T23:03:09.576+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module='[email protected] (TNS V1-V3)'
pid='6582'>
<txt>Data Guard: version check completed
</txt>
</msg>
<msg time='2009-10-21T23:03:09.642+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module=''
pid='6486'>
<txt>LGWR: STARTING ARCH PROCESSES
</txt>
</msg>
<msg time='2009-10-21T23:03:09.709+02:00' org_id='oracle' comp_id='rdbms'
msg_id='ksbrdp:3833:3697353022' type='NOTIFICATION' group='process start'
level='16' host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130'
pid='6588'>
<txt>RSM0 started with pid=23, OS id=6588
</txt>
</msg>
<msg time='2009-10-21T23:03:09.831+02:00' org_id='oracle' comp_id='rdbms'
msg_id='ksbrdp:3833:3697353022' type='NOTIFICATION' group='process start'
level='16' host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130'
pid='6590'>
<txt>ARC0 started with pid=24, OS id=6590
</txt>
</msg>
<msg time='2009-10-21T23:03:10.832+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module=''
pid='6486'>
<txt>ARC0: Archival started
</txt>
</msg>
<msg time='2009-10-21T23:03:10.832+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module=''
pid='6486'>
<txt>LGWR: STARTING ARCH PROCESSES COMPLETE
</txt>
</msg>
<msg time='2009-10-21T23:03:10.833+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module=''
pid='6590'>
<txt>ARC0: STARTING ARCH PROCESSES
</txt>
</msg>
<msg time='2009-10-21T23:03:11.180+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module='[email protected] (TNS V1-V3)'
pid='6582'>
<txt>ARCH: LGWR is scheduled to archive destination LOG_ARCHIVE_DEST_2 after log switch
</txt>
</msg>
<msg time='2009-10-21T23:03:11.183+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module='[email protected] (TNS V1-V3)'
pid='6582'>
<txt>ARCH: LGWR is scheduled to archive destination LOG_ARCHIVE_DEST_1 after log switch
</txt>
</msg>
<msg time='2009-10-21T23:03:11.258+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module='[email protected] (TNS V1-V3)'
pid='6582'>
<txt>Errors in file /u01/app/oracle/product/diag/rdbms/orclstby/orclstby/trace/orclstby_ora_6582.trc:
ORA-16014: log 1 sequence# 27 not archived, no available destinationsORA-00312: online log 1 thread 1: &apos;/u01/app/oracle/product/oradata/orclstby/redo01.log&apos;
</txt>
</msg>
<msg time='2009-10-21T23:03:11.263+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module='[email protected] (TNS V1-V3)'
pid='6582'>
<txt>USER (ospid: 6582): terminating the instance due to error 16014 </txt>
</msg>
<msg time='2009-10-21T23:03:11.429+02:00' org_id='oracle' comp_id='rdbms'
msg_id='ksbrdp:3833:3697353022' type='NOTIFICATION' group='process start'
level='16' host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130'
pid='6592'>
<txt>ARC1 started with pid=25, OS id=6592
</txt>
</msg>
<msg time='2009-10-21T23:03:12.728+02:00' org_id='oracle' comp_id='rdbms'
client_id='' type='UNKNOWN' level='16'
host_id='mredon-es.us.oracle.com' host_addr='192.168.237.130' module='[email protected] (TNS V1-V3)'
pid='6582'>
<txt>Instance terminated by USER, pid = 6582
</txt>
</msg>
I've marked in bold the errors which may be causing the problem, ¿what do you think?

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    Current status for DG1:
    Warning: ORA-16607: one or more databases failed.
    I have searched for solutions on Metalink and google, but with no success.
    Has anyone got this kind of problem?
    Any suggestions on how to resolve it?
    Thanks

    Hi DigerDBA
    I did your advice , the error disappear, and thanks for your advice , but do I need to keep standby_file_management='AUTO' or 'MANUAL' in primary and standby init files?
    Am asking this because when I use the observer the failover failed and I get the following error
    SQL Execution error=604, sql=[ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY WAIT WITH SESSION SHUTDOWN]. See error stack below.
      ORA-00604: error occurred at recursive SQL level 1
      ORA-01275: Operation ADD LOGFILE is not allowed if standby file management is automatic.
    Complete Failover operation failed in the step when attempting to convert the database to be the new primary.
    Database Resource SetState Error (16771)
    01/07/2014 09:14:43
    Command FAILOVER TO epprod2 completed with error ORA-16771
    if possible can you advice me please?

  • ORA-16525: the Data Guard broker is not yet available while conneting ...

    Hi,
    I am trying to connect oracle database instance in dgmgrl prompt.
    Following error message appear ...
    DGMGRL>
    DGMGRL> connect sys/<password>@<oracle_service_name>
    Connected.
    Error:
    ORA-16525: the Data Guard broker is not yet available
    ORA-06512: at "SYS.DBMS_DRS", line 124
    ORA-06512: at line 1
    DGMGRL> exit
    $ e
    We are using oracle enterprise manager ...
    SSM

    DG broker is the way to go. There are only minor points you can't control - like when you have standby redo logs and no redo application delay, dg broker will always start real-time apply.
    Also, DG broker is the only way if you want fast-start failover (10gR2 feature).
    What is the latency of your nework, especially under load? Add this latency to each commit - will the commit time be acceptable? If not, you cannot use sync.
    What version do you use? In 10gR1, there are issues with async - there is only about 50MB buffer, and if you get such backlog, even with async commit will wait for standby. (In 10gR2 this is solved, async will read from disk redo logs.)
    NET_TIMEOUT - set it low for sync (so commits won't hang long), higher for async. Default is 180 seconds, Oracle recommends minimum value to 10 seconds. I would start with 10 sec for sync, 180 for sync. The main question is, how reliable your network is, and how long brownouts you want to survive without affecting data protection (with the expense of performance).
    Regarding the proper setting of all bells and whistles of archive_log_dest_n - I had best experience with leaving it to dg broker. Just set LogXptMode property to sync/async/arch, and let dg broker set everything else (service, valid_for, affirm, retries...).
    The authoritative source: http://www.oracle.com/technology/deploy/availability/htdocs/maa.htm#Publications
    If you are on 10.2.0.1 - 10.2.0.3, please see metalink bug 5578157, 5587231 - if sqlnet.outbound_connection_timeout is not set, the lgwr can hang even if net_timeout is set. (Yes, real-world experience:-)

  • Error: ORA-16525: the Data Guard broker is not yet available

    Hi ,
    After upgrading from 11201 to 11203 ON AIX GI/RDBMS on standby but have not upgraded the primary db yet.I had set dg_broker_start=false and disable configuration before i started the upgrade .
    once the GI for oracle restart was upgraded i upgraded the rdbms binaries and brought up the standby on mount ,while trying to enable configuration its throwing the below error.I had already started the broker process.
    SQL> show parameter dg_
    NAME TYPE VALUE
    dg_broker_config_file1 string /u01/app/omvmxp1/product/11.2.
    0/dbhome_2/dbs/dr1mvmxs2.dat
    dg_broker_config_file2 string /u01/app/omvmxp1/product/11.2.
    0/dbhome_2/dbs/dr2mvmxs2.dat
    dg_broker_start boolean TRUE
    DGMGRL> show configuration;
    Configuration - Matrxrep_brkr
    Protection Mode: MaxAvailability
    Databases:
    mvmxp2 - Primary database
    mvmxs2 - Physical standby database
    Error: ORA-16525: the Data Guard broker is not yet available
    Fast-Start Failover: DISABLED
    Configuration Status:
    ERROR
    from drcmvmxs2.log
    Starting Data Guard Broker bootstrap <<Broker Configuration File Locations:
    dg_broker_config_file1 = "/u01/app/omvmxp1/product/11.2.0/dbhome_2/dbs/dr1mvmxs2.dat"
    dg_broker_config_file2 = "/u01/app/omvmxp1/product/11.2.0/dbhome_2/dbs/dr2mvmxs2.dat"
    12/19/2012 16:05:33
    Data Guard Broker shutting down
    DMON Process Shutdown <<12/19/2012 16:10:20
    Starting Data Guard Broker bootstrap <<Broker Configuration File Locations:
    dg_broker_config_file1 = "/u01/app/omvmxp1/product/11.2.0/dbhome_2/dbs/dr1mvmxs2.dat"
    dg_broker_config_file2 = "/u01/app/omvmxp1/product/11.2.0/dbhome_2/dbs/dr2mvmxs2.dat"
    ~
    Regards
    Edited by: Monto on Dec 19, 2012 1:23 PM

    Hi,
    I removed the configuration and removed the broker files from RAC primary(mvmxp2) and single instance standby(mvmxs2) and re-created back.i tried it many times but getting error "ORA-16532" .I needed to have this standby backup before i start upgrading the primary.
    SQL> alter system set dg_broker_start=true scope=both;
    System altered.
    SQL> exit
    Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
    With the Partitioning, Automatic Storage Management, OLAP, Data Mining
    and Real Application Testing options
    palmer60:/u01/app/omvmxp1/product/11.2.0/dbhome_2/dbs>dgmgrl
    DGMGRL for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - 64bit Production
    Copyright (c) 2000, 2009, Oracle. All rights reserved.
    Welcome to DGMGRL, type "help" for information.
    DGMGRL> connect sys@mvmxp2
    Password:
    Connected.
    DGMGRL> CREATE CONFIGURATION 'Matrxrep'
    AS
    PRIMARY DATABASE IS 'mvmxp2'
    CONNECT IDENTIFIER IS 'mvmxp2';> > >
    Configuration "Matrxrep" created with primary database "mvmxp2"
    DGMGRL> ADD DATABASE 'mvmxs2'
    AS
    CONNECT IDENTIFIER IS 'mvmxs2'
    ;Database "mvmxs2" added
    DGMGRL> SHOW CONFIGURATION;
    Configuration - Matrxrep
    Protection Mode: MaxPerformance
    Databases:
    mvmxp2 - Primary database
    mvmxs2 - Physical standby database
    Fast-Start Failover: DISABLED
    Configuration Status:
    DISABLED
    DGMGRL> ENABLE CONFIGURATION;
    Enabled.
    DGMGRL> SHOW DATABASE MVMXS2;
    Database - mvmxs2
    Role: PHYSICAL STANDBY
    Intended State: APPLY-ON
    Transport Lag: (unknown)
    Apply Lag: (unknown)
    Real Time Query: OFF
    Instance(s):
    mvmxs2
    Database Status:
    DGM-17016: failed to retrieve status for database "mvmxs2"
    ORA-16532: Data Guard broker configuration does not exist
    ORA-16625: cannot reach database "mvmxs2"
    DGMGRL>
    tailed the drcmvmxs2.log during stop and start of the broker
    palmer60:/u01/app/omvmxp1/diag/rdbms/mvmxs2/mvmxs2/trace>tail -f drcmvmxs2.log
    12/19/2012 20:32:20
    drcx: cannot open configuration file "/u01/app/omvmxp1/product/11.2.0/dbhome_2/dbs/dr1mvmxs2.dat"
    ORA-27037: unable to obtain file status
    IBM AIX RISC System/6000 Error: 2: No such file or directory
    Additional information: 3
    12/19/2012 20:32:55
    drcx: cannot open configuration file "/u01/app/omvmxp1/product/11.2.0/dbhome_2/dbs/dr2mvmxs2.dat"
    ORA-27037: unable to obtain file status
    IBM AIX RISC System/6000 Error: 2: No such file or directory
    Additional information: 3
    12/19/2012 20:59:10
    Data Guard Broker shutting down
    DMON Process Shutdown <<12/19/2012 20:59:35
    Starting Data Guard Broker bootstrap <<Broker Configuration File Locations:
    dg_broker_config_file1 = "/u01/app/omvmxp1/product/11.2.0/dbhome_2/dbs/dr1mvmxs2.dat"
    dg_broker_config_file2 = "/u01/app/omvmxp1/product/11.2.0/dbhome_2/dbs/dr2mvmxs2.dat"
    Not sure how to fix this one.
    Regards

  • Data Guard Configuration Issue / ORA-16047

    So last night I decided to setup a test Physical Standby database. I had everything working correctly and when I started playing around with the Data Guard Broker I started having some problems. Now I can't get the logs to ship from the primary to the standby.
    Version: Primary and Standby
    BANNER
    Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
    PL/SQL Release 11.2.0.1.0 - Production
    CORE    11.2.0.1.0    Production
    TNS for Linux: Version 11.2.0.1.0 - Production
    NLSRTL Version 11.2.0.1.0 - Production
    OS: Primary and Standby
    [oracle@dgdb0 trace]$ uname -a
    Linux dgdb0.localdomain 2.6.32-100.28.5.el6.x86_64 #1 SMP Wed Feb 2 18:40:23 EST 2011 x86_64 x86_64 x86_64 GNU/LinuxI first noticed a problem with a large gap in sequence numbers.
    Standby
    SQL> SELECT sequence#, applied from v$archived_log order by sequence#;
    SEQUENCE# APPLIED
         8 YES
         9 YES
        10 YES
        11 YES
        12 YES
        13 YES
        14 YES
    7 rows selected.
    Primary
    SQL> archive log list;
    Database log mode           Archive Mode
    Automatic archival           Enabled
    Archive destination           USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     37
    Next log sequence to archive   39
    Current log sequence           39Here is some of the configuration information on the primary:
    SQL> show parameter db_name
    NAME                     TYPE     VALUE
    db_name                  string     dgdb0
    SQL> show parameter db_unique_name
    NAME                     TYPE     VALUE
    db_unique_name                 string     dgdb0
    SQL> show parameter log_archive_config
    NAME                     TYPE     VALUE
    log_archive_config             string     dg_config=(dgdb0,dgdb1)
    SQL> show parameter log_archive_dest_2
    NAME                     TYPE     VALUE
    log_archive_dest_2             string     service=dgdb1 async valid_for=
                             (online_logfile,primary_role)
                             db_unique_name=dgdb1Standby parameters
    SQL> show parameter db_name
    NAME                     TYPE     VALUE
    db_name                  string     dgdb0
    SQL> show parameter db_unique_name
    NAME                     TYPE     VALUE
    db_unique_name                 string     dgdb1So I proceeded to run this query:
    SQL> SELECT error from v$archive_dest WHERE dest_name='LOG_ARCHIVE_DEST_2';
    ERROR
    ORA-16047: DGID mismatch between destination setting and target
    databaseThe error description is:
    Cause:       The DB_UNIQUE_NAME specified for the destination does not match the DB_UNIQUE_NAME at the destination.
    Action:     Make sure the DB_UNIQUE_NAME specified in the LOG_ARCHIVE_DEST_n parameter defined for the destination matches the DB_UNIQUE_NAME parameter defined at the destination.As you can see from above the DB_UNIQUE_NAME in the LOG_ARCHIVE_DEST_2 parameter matches that of the standby database.
    Also DG_BROKER_START is set to false on both the primary and standby databases.
    Finally, I've removed all the drc* files from the $ORACLE_HOME/dbs directories on both the primary and standby servers to ensure the broker is not configured.
    Where did I go wrong? How can I get the standby caught up and working correctly again?
    I apologized if I missed anything. I'm relatively new to standby databases.

    Centinul;
    I have noticed a couple things
    1. If you are running the query below from the standby you will probably always get the results you posted
    SELECT sequence#, applied from v$archived_log order by sequence#;
    What I do if run this from the primary and I add the "DEST_ID" column to the query.
    2. You might have better luck finding GAPS using these queries:
    select max(sequence#) from v$archived_log where applied='YES';
    select process,status from v$managed_standby;
    SELECT * FROM V$ARCHIVE_GAP;
    3. You are mixing SQL results with Data Broker, that can bite you. Not sure where you went wrong but I would create PFILE versions at both ends before trying to Data Broker. The you can review each setting and avoid issues before adding Data Broker. Data Broker will take control and you may even find it adds entries to your parameter file.
    The ORA-16047 is probably database parameter related and this should at least help answer the question. For example you might be missing log_archive_config on the Standby or soething. Comparing the two PFILE's should narrow this down
    I checked my Data Broker notes but did not find an ORA-16047, I managed ORA-01031, ORA-16675, ORA-12514, and ORA-16608.
    For me I decided it was a good idea to run Data Guard without Data Broker at first until I got the feel of it using SQL.
    Last of all if you have not already consider buying Larry Carpenter's "Oracle Data Guard 11g Handbook" In my humble opinion its worth every penny and more.
    Best Regards
    mseberg

  • How do i find dataloss in Data Guard?

    We are using redo log, in async mode, following is our setting.
    SERVICE=xxx_sb max_failure=100 reopen=600 LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=xxx_sb
    When i query V$managed_Standby for delay_mins, its always zero. Meaning there is no delay in copying a log. I have 2 questions..
    1. How can i communicate to business that in worst case we will lose x Mintues of data? Its an OLTP, where the transactions are less then 2mins. Also during the night there are some batch jobs where the transactions are 60mins longs.
    2. Most of the time during peak hours there is a log switch happening every 10-15mins but during non-peak it may not happen for a long period of time, is it advisable to set ARCHIVE_LAG_TIME to 10 mins? as im not using archiver , we are using log writer for standby.
    any explanation or point to documentation would be appreciated,
    Thanks,

    Production databases who are running with fully fined configured Data Guard, do'nt have any dataloss because failover operation ensures zero data loss if dataguard is configured with maximum protection mode or maximum availability mode at failover time.
    http://www.dbazone.com/docs/oracle_10gDataGuard_overview.pdf
    The above pdf is oracle white paper which too confirmed it.
    LGWR SYNC AFFIRM in Oracle Data Guard is used for zero data loss. How does one ensure zero data loss? Well, the redo block generated at the primary has to reach the standby across the network (that's where the SYNC part comes in - i.e. it is a synchronous network call), and then the block has to be written on disk on the standby (that's where the AFFIRM part comes in) - typically on a standby redo log.
    Can you have LGWR SYNC NOAFFIRM? Yes sure. Then you will have synchronous network transport, but the only thing you are guaranteed is that the block has reached the remote standby's memory. It has not been written on to disk yet. So not really a zero data loss solution (e.g. what if the standby instance crashes before the disk I/O).
    To sum up -> LGWR SYNC AFFIRM means primary transaction commits are waiting for ntk I/O + disk I/O acks. LGWR SYNC NOAFFIRM means primary transaction commits are waiting for ntk I/O only.
    Source:http://www.dbasupport.com/forums/showthread.php?t=54467
    HTH
    Girish Sharma

  • Urgent  : ORA-01426: numeric overflow on oracle 11g  Active Data Guard

    Hi
    I have configured Active Data Guard on oracle 11g, for reporting purpose we will select mutliple querry on target side(10 users). we are getting 'numeric overflow erro'r on alert log file When we issuing multiple query on target side. PLeae let me know is this error will cause performance degrad. if it will degrade performance mean please tell me how to resolve this problem. Why the numeric overflow is comming . and it is not comming in the primary database, it is comming in standby database only. please any one help it is very urgent
    is there any parameter To overcome this problme
    Please please it is very important to me and very urgent .
    Thanks
    nafees
    Edited by: Nafees on Jan 1, 2009 3:44 AM
    Edited by: Nafees on Jan 1, 2009 3:54 AM

    There is no one drowning.
    Your house is not on fire.
    The volcano has not exploded.
    Please apologize for abusing this forum by claiming your issue is more urgent than other people's requests.
    Then, and only then, should anyone help you. I know I certainly won't until I read your sincere apology and promise not to be abusive in the future.

  • Question on db_unique_name in init.ora for Data Guard

    I need to set up only one physical standby on a different box (at a different location) for the primary db in production.
    OS: Sun Sparc Solaris 10
    Oracle: 10.2.0.3
    Can I use the same db_unique_name in init.ora for both primary and standby DBs?
    What are the minimal parameters required by Data Guard I have to specify in the init.ora in my case?
    Could anyone please post an example of init.ora for both primary and standby DBs?
    Thanks very much in advance.

    http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/create_ps.htm#i63561

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