Data guard synchronization after link down b/w primary and physical standby

Hi All,
I have configured data guard on oracle 11gr2 db. Normally switchover between my primary and physical standby happens smoothly and the Apply lag would be zero. Recently We had to test a scenario when the network link between Primary and Physical standby is completely down and Physical standby is isolated completely for more than half an hour.
When we brought up the link every thing worked smoothly but apply lag started increasing from 0 to around 3 hrs. And then it started reducing to 0. Currently Apply lag and transport lag shows 0.
But is this normal behaviour of oracle data guard that when the link between primary and physical standby is completely down, It requires 3-4 hrs for resynchronization ??? Even when during isolation, there were very few transactions happend on primary database ??
Are there any documents available for this scenario??
Thanks

Hi, after the link is up, if there were some transactions and produced archive logs it's normal to take some time for resync. To check if 3-4 hours is normal or not, you can repeat the scenario and this time check
- how many archivelogs does primary produce in this period.
- after the link is up, does archivelog transfer immediately starts from primary to standby? Is primary able to send these archivelogs parallel?
- Is there anything wrong with the apply process?
check primary & standby alert log files, and run this query on standby to check the transport and apply processes:
SELECT PROCESS, STATUS, THREAD#, SEQUENCE#, BLOCK#, BLOCKS FROM V$MANAGED_STANDBY;
regards

Similar Messages

Data Guard Archive Log Latency Between Primary and Physical Standby

How can I get the time it takes (latency) for the primary instance to get an archive log over to the physical standby instance and get it "archived" and "applied". I have been looking at the V$ARCHIVED_LOG view on each side but the COLUMN "COMPLETION_TIME" always shows a date "MM/DD/YY" and no timestamp. I thought the DATE datatype include data and time. Any ideas on how I can get the latency info I'm looking for?
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Data guard real time apply vs archived log apply on physical standby

Dear DBA's,
last week i configuared DR , now the phyiscal stanby database is archive apply mode,
i want to confirm is it better to apply the archived log or should i cahnge it to real time apply .
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Thanks and Regards
Raja...

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Data Guard setup after resetlogs on Primary

Hello,
On our primary database we had to perform an incomplete recovery and afterwards had to perform the command "ALTER DATABASE OPEN RESETLOGS". The problem I have is that after switching the Logical and Physical Standby databases back on they are still looking for archive log number 16133 when the log sequences have been reset back to 1.
The error message in the alert log is ....
ORA-16069: Archive Log standby database activation identifier mismatch
So the question is do I need to re-create my Logical and Physical standby databases or is there another may around this?
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Folders created thru DB link not showing in Discoverer on physical Standby

Hi All,
We are using Oracle Database 10g Enterprise Edition Release 10.2.0.4.0. We have configured a physical standby database that we open in read only mode for reporting purpose.
We have configured the Oracle Discoverer 9.0.2.00.00 for reporting on both production and physical standby.
We have another database called legacy database, we moved 3 years old data from production to legacy database.
To access some legacy tables from production we have created a DB link in production and we have also added these tables in discoverer thru DB Link.
Now when user executes the discoverer desktop from standby database, the folders pointing the legacy database are not showing, while when we connect thru Discoverer Administrator it is showing in EUL.
I then connected to standby database thru a user and executed a select statement as
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After that I have started the physical standby database in read only mode and issue the command set transaction read only as SYS user , but in discoverer desktop these folders are still not available

Hi,
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Usually with database links you are better off hiding the link in a database view so that the metadata for the folder is held locally.
Rod West

Data Guard Failover after primary site network failure or disconnect.

Hello Experts:
I'll try to be clear and specific with my issue:
Environment:
Two nodes with NO shared storage (I don't have an Observer running).
Veritas Cluser Server (VCS) with Data Guar Agent. (I don't use the Broker. Data Guard agent "takes care" of the switchover and failover).
Two single instance databases, one per node. NO RAC.
What I'm being able to perform with no issues:
Manual switch(over) of the primary database by running VCS command "hagrp -switch oraDG_group -to standby_node"
Automatic fail(over) when primary node is rebooted with "reboot" or "init"
Automatic fail(over) when primary node is shut down with "shutdown".
What I'm NOT being able to perform:
If I manually unplug the network cables from the primary site (all the network, not only the link between primary and standby node so, it's like a server unplug from the energy source).
Same situation happens if I manually disconnect the server from the power.
This is the alert logs I have:
This is the portion of the alert log at Standby site when Real Time Replication is working fine:
Recovery of Online Redo Log: Thread 1 Group 4 Seq 7 Reading mem 0
Mem# 0: /u02/oracle/fast_recovery_area/standby_db/onlinelog/o1_mf_4_9c3tk3dy_.log
At this moment, node1 (Primary) is completely disconnected from the network. SEE at the end when the database (standby which should be converted to PRIMARY) is not getting all the archived logs from the Primary due to the abnormal disconnect from the network:
Identified End-Of-Redo (failover) for thread 1 sequence 7 at SCN 0xffff.ffffffff
Incomplete Recovery applied until change 15922544 time 12/23/2013 17:12:48
Media Recovery Complete (primary_db)
Terminal Recovery: successful completion
Forcing ARSCN to IRSCN for TR 0:15922544
Mon Dec 23 17:13:22 2013
ARCH: Archival stopped, error occurred. Will continue retrying
ORACLE Instance primary_db - Archival ErrorAttempt to set limbo arscn 0:15922544 irscn 0:15922544
ORA-16014: log 4 sequence# 7 not archived, no available destinations
ORA-00312: online log 4 thread 1: '/u02/oracle/fast_recovery_area/standby_db/onlinelog/o1_mf_4_9c3tk3dy_.log'
Resetting standby activation ID 2071848820 (0x7b7de774)
Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH
Mon Dec 23 17:13:33 2013
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH
Terminal Recovery: applying standby redo logs.
Terminal Recovery: thread 1 seq# 7 redo required
Terminal Recovery:
Recovery of Online Redo Log: Thread 1 Group 4 Seq 7 Reading mem 0
Mem# 0: /u02/oracle/fast_recovery_area/standby_db/onlinelog/o1_mf_4_9c3tk3dy_.log
Identified End-Of-Redo (failover) for thread 1 sequence 7 at SCN 0xffff.ffffffff
Incomplete Recovery applied until change 15922544 time 12/23/2013 17:12:48
Media Recovery Complete (primary_db)
Terminal Recovery: successful completion
Forcing ARSCN to IRSCN for TR 0:15922544
Mon Dec 23 17:13:22 2013
ARCH: Archival stopped, error occurred. Will continue retrying
ORACLE Instance primary_db - Archival ErrorAttempt to set limbo arscn 0:15922544 irscn 0:15922544
ORA-16014: log 4 sequence# 7 not archived, no available destinations
ORA-00312: online log 4 thread 1: '/u02/oracle/fast_recovery_area/standby_db/onlinelog/o1_mf_4_9c3tk3dy_.log'
Resetting standby activation ID 2071848820 (0x7b7de774)
Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH
Mon Dec 23 17:13:33 2013
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH
Attempt to do a Terminal Recovery (primary_db)
Media Recovery Start: Managed Standby Recovery (primary_db)
started logmerger process
Mon Dec 23 17:13:33 2013
Managed Standby Recovery not using Real Time Apply
Media Recovery failed with error 16157
Recovery Slave PR00 previously exited with exception 283
ORA-283 signalled during: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH...
Mon Dec 23 17:13:34 2013
Shutting down instance (immediate)
Shutting down instance: further logons disabled
Stopping background process MMNL
Stopping background process MMON
License high water mark = 38
All dispatchers and shared servers shutdown
ALTER DATABASE CLOSE NORMAL
ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL...
ALTER DATABASE DISMOUNT
Shutting down archive processes
Archiving is disabled
Mon Dec 23 17:13:38 2013
Mon Dec 23 17:13:38 2013
Mon Dec 23 17:13:38 2013
ARCH shutting downARCH shutting down
ARCH shutting down
ARC0: Relinquishing active heartbeat ARCH role
ARC2: Archival stopped
ARC0: Archival stopped
ARC1: Archival stopped
Completed: ALTER DATABASE DISMOUNT
ARCH: Archival disabled due to shutdown: 1089
Shutting down archive processes
Archiving is disabled
Mon Dec 23 17:13:40 2013
Stopping background process VKTM
ARCH: Archival disabled due to shutdown: 1089
Shutting down archive processes
Archiving is disabled
Mon Dec 23 17:13:43 2013
Instance shutdown complete
Mon Dec 23 17:13:44 2013
Adjusting the default value of parameter parallel_max_servers
from 1280 to 470 due to the value of parameter processes (500)
Starting ORACLE instance (normal)
************************ Large Pages Information *******************
Per process system memlock (soft) limit = 64 KB
Total Shared Global Region in Large Pages = 0 KB (0%)
Large Pages used by this instance: 0 (0 KB)
Large Pages unused system wide = 0 (0 KB)
Large Pages configured system wide = 0 (0 KB)
Large Page size = 2048 KB
RECOMMENDATION:
Total System Global Area size is 3762 MB. For optimal performance,
prior to the next instance restart:
1. Increase the number of unused large pages by
at least 1881 (page size 2048 KB, total size 3762 MB) system wide to
get 100% of the System Global Area allocated with large pages
2. Large pages are automatically locked into physical memory.
Increase the per process memlock (soft) limit to at least 3770 MB to lock
100% System Global Area's large pages into physical memory
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Initial number of CPU is 32
Number of processor cores in the system is 16
Number of processor sockets in the system is 2
CELL communication is configured to use 0 interface(s):
CELL IP affinity details:
    NUMA status: NUMA system w/ 2 process groups
    cellaffinity.ora status: cannot find affinity map at '/etc/oracle/cell/network-config/cellaffinity.ora' (see trace file for details)
CELL communication will use 1 IP group(s):
    Grp 0:
Picked latch-free SCN scheme 3
Autotune of undo retention is turned on.
IMODE=BR
ILAT =88
LICENSE_MAX_USERS = 0
SYS auditing is disabled
NUMA system with 2 nodes detected
Starting up:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options.
ORACLE_HOME = /u01/oracle/product/11.2.0.4
System name:    Linux
Node name:      node2.localdomain
Release:        2.6.32-131.0.15.el6.x86_64
Version:        #1 SMP Tue May 10 15:42:40 EDT 2011
Machine:        x86_64
Using parameter settings in server-side spfile /u01/oracle/product/11.2.0.4/dbs/spfileprimary_db.ora
System parameters with non-default values:
processes                = 500
sga_target               = 3760M
control_files            = "/u02/oracle/orafiles/primary_db/control01.ctl"
control_files            = "/u01/oracle/fast_recovery_area/primary_db/control02.ctl"
db_file_name_convert     = "standby_db"
db_file_name_convert     = "primary_db"
log_file_name_convert    = "standby_db"
log_file_name_convert    = "primary_db"
control_file_record_keep_time= 40
db_block_size            = 8192
compatible               = "11.2.0.4.0"
log_archive_dest_1       = "location=/u02/oracle/archivelogs/primary_db"
log_archive_dest_2       = "SERVICE=primary_db ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=primary_db"
log_archive_dest_state_2 = "ENABLE"
log_archive_min_succeed_dest= 1
fal_server               = "primary_db"
log_archive_trace        = 0
log_archive_config       = "DG_CONFIG=(primary_db,standby_db)"
log_archive_format       = "%t_%s_%r.dbf"
log_archive_max_processes= 3
db_recovery_file_dest    = "/u02/oracle/fast_recovery_area"
db_recovery_file_dest_size= 30G
standby_file_management = "AUTO"
db_flashback_retention_target= 1440
undo_tablespace          = "UNDOTBS1"
remote_login_passwordfile= "EXCLUSIVE"
db_domain                = ""
dispatchers              = "(PROTOCOL=TCP) (SERVICE=primary_dbXDB)"
job_queue_processes      = 0
audit_file_dest          = "/u01/oracle/admin/primary_db/adump"
audit_trail              = "DB"
db_name                  = "primary_db"
db_unique_name           = "standby_db"
open_cursors             = 300
pga_aggregate_target     = 1250M
dg_broker_start          = FALSE
diagnostic_dest          = "/u01/oracle"
Mon Dec 23 17:13:45 2013
PMON started with pid=2, OS id=29108
Mon Dec 23 17:13:45 2013
PSP0 started with pid=3, OS id=29110
Mon Dec 23 17:13:46 2013
VKTM started with pid=4, OS id=29125 at elevated priority
VKTM running at (1)millisec precision with DBRM quantum (100)ms
Mon Dec 23 17:13:46 2013
GEN0 started with pid=5, OS id=29129
Mon Dec 23 17:13:46 2013
DIAG started with pid=6, OS id=29131
Mon Dec 23 17:13:46 2013
DBRM started with pid=7, OS id=29133
Mon Dec 23 17:13:46 2013
DIA0 started with pid=8, OS id=29135
Mon Dec 23 17:13:46 2013
MMAN started with pid=9, OS id=29137
Mon Dec 23 17:13:46 2013
DBW0 started with pid=10, OS id=29139
Mon Dec 23 17:13:46 2013
DBW1 started with pid=11, OS id=29141
Mon Dec 23 17:13:46 2013
DBW2 started with pid=12, OS id=29143
Mon Dec 23 17:13:46 2013
DBW3 started with pid=13, OS id=29145
Mon Dec 23 17:13:46 2013
LGWR started with pid=14, OS id=29147
Mon Dec 23 17:13:46 2013
CKPT started with pid=15, OS id=29149
Mon Dec 23 17:13:46 2013
SMON started with pid=16, OS id=29151
Mon Dec 23 17:13:46 2013
RECO started with pid=17, OS id=29153
Mon Dec 23 17:13:46 2013
MMON started with pid=18, OS id=29155
Mon Dec 23 17:13:46 2013
MMNL started with pid=19, OS id=29157
starting up 1 dispatcher(s) for network address '(ADDRESS=(PARTIAL=YES)(PROTOCOL=TCP))'...
starting up 1 shared server(s) ...
ORACLE_BASE from environment = /u01/oracle
Mon Dec 23 17:13:46 2013
ALTER DATABASE   MOUNT
ARCH: STARTING ARCH PROCESSES
Mon Dec 23 17:13:50 2013
ARC0 started with pid=23, OS id=29210
ARC0: Archival started
ARCH: STARTING ARCH PROCESSES COMPLETE
ARC0: STARTING ARCH PROCESSES
Successful mount of redo thread 1, with mount id 2071851082
Mon Dec 23 17:13:51 2013
ARC1 started with pid=24, OS id=29212
Allocated 15937344 bytes in shared pool for flashback generation buffer
Mon Dec 23 17:13:51 2013
ARC2 started with pid=25, OS id=29214
Starting background process RVWR
ARC1: Archival started
ARC1: Becoming the 'no FAL' ARCH
ARC1: Becoming the 'no SRL' ARCH
Mon Dec 23 17:13:51 2013
RVWR started with pid=26, OS id=29216
Physical Standby Database mounted.
Lost write protection disabled
Completed: ALTER DATABASE   MOUNT
Mon Dec 23 17:13:51 2013
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE
         USING CURRENT LOGFILE DISCONNECT FROM SESSION
Attempt to start background Managed Standby Recovery process (primary_db)
Mon Dec 23 17:13:51 2013
MRP0 started with pid=27, OS id=29219
MRP0: Background Managed Standby Recovery process started (primary_db)
ARC2: Archival started
ARC0: STARTING ARCH PROCESSES COMPLETE
ARC2: Becoming the heartbeat ARCH
ARC2: Becoming the active heartbeat ARCH
ARCH: Archival stopped, error occurred. Will continue retrying
ORACLE Instance primary_db - Archival Error
ORA-16014: log 4 sequence# 7 not archived, no available destinations
ORA-00312: online log 4 thread 1: '/u02/oracle/fast_recovery_area/standby_db/onlinelog/o1_mf_4_9c3tk3dy_.log'
At this moment, I've lost service and I have to wait until the prmiary server goes up again to receive the missing log.
This is the rest of the log:
Fatal NI connect error 12543, connecting to:
(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=node1)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=primary_db)(CID=(PROGRAM=oracle)(HOST=node2.localdomain)(USER=oracle))))
VERSION INFORMATION:
        TNS for Linux: Version 11.2.0.4.0 - Production
        TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.4.0 - Production
Time: 23-DEC-2013 17:13:52
Tracing not turned on.
Tns error struct:
    ns main err code: 12543
TNS-12543: TNS:destination host unreachable
    ns secondary err code: 12560
    nt main err code: 513
TNS-00513: Destination host unreachable
    nt secondary err code: 113
    nt OS err code: 0
Fatal NI connect error 12543, connecting to:
(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=node1)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=primary_db)(CID=(PROGRAM=oracle)(HOST=node2.localdomain)(USER=oracle))))
VERSION INFORMATION:
        TNS for Linux: Version 11.2.0.4.0 - Production
        TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.4.0 - Production
Time: 23-DEC-2013 17:13:55
Tracing not turned on.
Tns error struct:
    ns main err code: 12543
TNS-12543: TNS:destination host unreachable
    ns secondary err code: 12560
    nt main err code: 513
TNS-00513: Destination host unreachable
    nt secondary err code: 113
    nt OS err code: 0
started logmerger process
Mon Dec 23 17:13:56 2013
Managed Standby Recovery starting Real Time Apply
MRP0: Background Media Recovery terminated with error 16157
Errors in file /u01/oracle/diag/rdbms/standby_db/primary_db/trace/primary_db_pr00_29230.trc:
ORA-16157: media recovery not allowed following successful FINISH recovery
Managed Standby Recovery not using Real Time Apply
Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE
         USING CURRENT LOGFILE DISCONNECT FROM SESSION
Recovery Slave PR00 previously exited with exception 16157
MRP0: Background Media Recovery process shutdown (primary_db)
Fatal NI connect error 12543, connecting to:
(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=node1)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=primary_db)(CID=(PROGRAM=oracle)(HOST=node2.localdomain)(USER=oracle))))
VERSION INFORMATION:
        TNS for Linux: Version 11.2.0.4.0 - Production
        TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.4.0 - Production
Time: 23-DEC-2013 17:13:58
Tracing not turned on.
Tns error struct:
    ns main err code: 12543
TNS-12543: TNS:destination host unreachable
    ns secondary err code: 12560
    nt main err code: 513
TNS-00513: Destination host unreachable
    nt secondary err code: 113
    nt OS err code: 0
Mon Dec 23 17:14:01 2013
Fatal NI connect error 12543, connecting to:
(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=node1)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=primary_db)(CID=(PROGRAM=oracle)(HOST=node2.localdomain)(USER=oracle))))
VERSION INFORMATION:
        TNS for Linux: Version 11.2.0.4.0 - Production
        TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.4.0 - Production
Time: 23-DEC-2013 17:14:01
Tracing not turned on.
Tns error struct:
    ns main err code: 12543
TNS-12543: TNS:destination host unreachable
    ns secondary err code: 12560
    nt main err code: 513
TNS-00513: Destination host unreachable
    nt secondary err code: 113
    nt OS err code: 0
Error 12543 received logging on to the standby
FAL[client, ARC0]: Error 12543 connecting to primary_db for fetching gap sequence
Archiver process freed from errors. No longer stopped
Mon Dec 23 17:15:07 2013
Using STANDBY_ARCHIVE_DEST parameter default value as /u02/oracle/archivelogs/primary_db
Mon Dec 23 17:19:51 2013
ARCH: Archival stopped, error occurred. Will continue retrying
ORACLE Instance primary_db - Archival Error
ORA-16014: log 4 sequence# 7 not archived, no available destinations
ORA-00312: online log 4 thread 1: '/u02/oracle/fast_recovery_area/standby_db/onlinelog/o1_mf_4_9c3tk3dy_.log'
Mon Dec 23 17:26:18 2013
RFS[1]: Assigned to RFS process 31456
RFS[1]: No connections allowed during/after terminal recovery.
Mon Dec 23 17:26:47 2013
flashback database to scn 15921680
ORA-16157 signalled during: flashback database to scn 15921680...
Mon Dec 23 17:27:05 2013
alter database recover managed standby database using current logfile disconnect
Attempt to start background Managed Standby Recovery process (primary_db)
Mon Dec 23 17:27:05 2013
MRP0 started with pid=28, OS id=31481
MRP0: Background Managed Standby Recovery process started (primary_db)
started logmerger process
Mon Dec 23 17:27:10 2013
Managed Standby Recovery starting Real Time Apply
MRP0: Background Media Recovery terminated with error 16157
Errors in file /u01/oracle/diag/rdbms/standby_db/primary_db/trace/primary_db_pr00_31486.trc:
ORA-16157: media recovery not allowed following successful FINISH recovery
Managed Standby Recovery not using Real Time Apply
Completed: alter database recover managed standby database using current logfile disconnect
Recovery Slave PR00 previously exited with exception 16157
MRP0: Background Media Recovery process shutdown (primary_db)
Mon Dec 23 17:27:18 2013
RFS[2]: Assigned to RFS process 31492
RFS[2]: No connections allowed during/after terminal recovery.
Mon Dec 23 17:28:18 2013
RFS[3]: Assigned to RFS process 31614
RFS[3]: No connections allowed during/after terminal recovery.
Do you have any advice?
Thanks!
Alex.

Hello;
What's not clear to me in your question at this point:
What I'm NOT being able to perform:
If I manually unplug the network cables from the primary site (all the network, not only the link between primary and standby node so, it's like a server unplug from the energy source).
Same situation happens if I manually disconnect the server from the power.
This is the alert logs I have:"
Are you trying a failover to the Standby?
Please advise.
Is it possible your "valid_for clause" is set incorrectly?
Would also review this:
ORA-16014 and ORA-00312 Messages in Alert.log of Physical Standby
Best Regards
mseberg

Steps for Data Guard with one primary and 2 standby

Hi,
Database :10.2.0.4, 11.2.0.1
Os: Windows , Unix
A ----------------> Primary database
B ----------------> Standby Database 1
C ----------------> Standby Database 2
I want to configure *2 standby* databases for single primary database.
Lets take, A ,B and C are my machines.My data guard configuration will be like,*archive logs will be moving* from A to B and A to C.
If i do any switchover in between A and B , now B is primary and remaining A and C are standby databases.At this stage also , archive logs should move from B to A and B to C. Also, same should happen from C to A and C to B,If i do switchover in between B and C.If everything is fine , then i will do switchback to main Primary database(A).
How do i have to mention PFILE in all machines ,the parameters like
LOG_ARCHIVE_DEST_1=LOCATION=<PATH> -- LOCAL ARCHIVE PATH
LOG_ARCHIVE_DEST_2=SERVICE=
LOG_ARCHIVE_DEST_3=SERVICE=
FAL_SERVER=
FAL_CLIENT=
STANDBY_FILE_MANAGEMENT=
In my tnsnames.ora , primary,standby1 and standby2 are my service entries and these are same in all of my machines.
Please suggest me , how do i can configure my pfiles in all machines ?.
Thanks,
Sunand

Not yet, but now you have me interested.
Please consider Flashback.
I still have to test but here's my take:
PRIMARY SETTINGS
*.FAL_SERVER=STANDBY
*.FAL_CLIENT=PRIMARY
*.STANDBY_FILE_MANAGEMENT=AUTO
*.DB_UNIQUE_NAME=PRIMARY
*.LOG_FILE_NAME_CONVERT='STANDBY','PRIMARY'
*.log_archive_dest_1='LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=PRIMARY'
*.log_archive_dest_2='SERVICE=STANDBY LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=STANDBY'
*.log_archive_dest_3='SERVICE=STANDBY2 LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=STANDBY2'
*.LOG_ARCHIVE_DEST_STATE_1=ENABLE
*.LOG_ARCHIVE_DEST_STATE_2=ENABLE
*.LOG_ARCHIVE_DEST_STATE_3=ENABLE
*.LOG_ARCHIVE_MAX_PROCESSES=30
STANDBY 1 SETTINGS
*.FAL_SERVER=PRIMARY
*.FAL_CLIENT=STANDBY
*.STANDBY_FILE_MANAGEMENT=AUTO
*.DB_UNIQUE_NAME=STANDBY
*.LOG_FILE_NAME_CONVERT='PRIMARY','STANDBY'
*.log_archive_dest_1=LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=STANDBY'
*.log_archive_dest_2='SERVICE=PRIMARY LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=PRIMARY'
*.log_archive_dest_3='SERVICE=STANDBY2 LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=STANDBY2'
*.LOG_ARCHIVE_DEST_STATE_1=ENABLE
*.LOG_ARCHIVE_DEST_STATE_2=DEFER
*.LOG_ARCHIVE_DEST_STATE_3=DEFER
*.LOG_ARCHIVE_MAX_PROCESSES=30
STANDBY2 SETTINGS
*.FAL_SERVER=PRIMARY
*.FAL_CLIENT=STANDBY2
*.STANDBY_FILE_MANAGEMENT=AUTO
*.DB_UNIQUE_NAME=STANDBY2
*.LOG_FILE_NAME_CONVERT='PRIMARY','STANDBY2'
*.log_archive_dest_1=LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=STANDBY2'
*.log_archive_dest_2='SERVICE=STANDBY LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=STANDBY'
*.log_archive_dest_3='SERVICE=PRIMARY LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=PRIMARY'
*.LOG_ARCHIVE_DEST_STATE_1=ENABLE
*.LOG_ARCHIVE_DEST_STATE_2=DEFER
*.LOG_ARCHIVE_DEST_STATE_3=DEFER
*.LOG_ARCHIVE_MAX_PROCESSES=30
Edited by: mseberg on Nov 29, 2010 9:39 AM
The first test slapped me. Looking at 409013.1 Cascaded Standby Databases
Edited by: mseberg on Nov 29, 2010 12:49 PM

Data Pump and Physical Standby

I want to perform a data pump export on a schema attached to a physical standby database. Is this possible and what are the steps.

Thanks for the information. I will give it a tryI just realized it might not work, because data pump need to update the data pump job information.
What's the concern not running export on primary?

Load data with SQL Loader link field between CSV file and Control File

Hi all,
in a SQL Loader control file, how do you specify link with field in CSV file and Control file?
E.g. if I wat to import the record in table TEST (col1, col2, col3) with data in csv file BUT in different position. How to do this?
FILE CSV (with variable position):
test1;prova;pippo;Ferrari;
xx;yy;hello;by;
In the table TEST i want that col1 = 'prova' (xx),
col2 = 'Ferrari' (yy)
col3 = default N
the others data in CSV file are ignored.
so:
load data
infile 'TEST.CSV'
into table TEST
fields terminated by ';'
col1 ?????,
col2 ?????,
col3 CONSTANT "N"
Thanks,
Attilio

With '?' mark i mean " How i can link this COL1 with column in csv file ? "
Attilio

TS1702 How do you delete an app when the original way wont allow you? I.E the little X does not appear after holding down on the app and it begins to wiggle

Need Help!

If that happens you are either:
Attempting to delete an builtin App like Clock, Contacts, Notes, Newstand, Game Center, etc. This you cannot do. or
Have a restriction on Deleting Apps in Settings > General > Restrictions.

Data Guard Broker configuration in oracle10g r2

Hi,
I am facing difficulties while configuring data guard broker. Our setup is RAC primary and single standby database. Show configuration is raising the following error...
ORA-16607: one or more databases have failed
on dcSTANDBY.log file it shows below messages....
NSV0: Failed to connect to remote database ajmprod. Error is ORA-12545
NSV0: Failed to send message to site ajmprod. Error code is ORA-12545.
I have checked listener.ora and tnsnames.ora are fine. It's fine with tnsping and sqlplus conection. I am confused where is the problem.
Aprreciate your suggestions.

Here is how I would look into this issue.
1. check the password file is setup for both and the password is common between them and matches the password of the sys user in the database.
2. check that listener(s) are up and running and status checks out.
3. check that you hosts file or DNS sees this hosts, you can check this with a ping command do from each host to the other
4. check that tnsnames.ora has the proper connect setup for both instances in you data guard configuration.
5. check tnsping to both instances from both hosts.
6. check all TNS connectivity to both instances using the SYS as sysdba, Use the TNS sqlplus sys@db as sysdba. Do this connection from both hosts if using more then one host.
If you have verified all this and it is still not working let me know and we can move on to next steps.

Data Guard DB Broker configuration failed after adding Standby DB

I am trying to set up DG Broker configuration between Primary and Physical Standby DB. I have added Standby db and enabled it. But when i try to show configuration it failed. Given below are the errors.
Any help regarding this error is appreciated.
GMGRL> show configuration
Configuration
Name: DBTEST
Enabled: YES
Protection Mode: MaxPerformance
Databases:
DBSOURCE - Primary database
DBTARGET - Physical standby database
Fast-Start Failover: DISABLED
Current status for "DBTEST":
Warning: ORA-16607: one or more databases have failed
DGMGRL> show database verbose DBTARGET
Object "dbtarget" was not found
Given below is the alert.log error
Fatal NI connect error 12514, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=pdg2.localdomain)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=DBTARGET_DGB.US.JT.COM)(CID=(PROGRAM=oracle)(HOST=pdg1.localdomain)(USER=oracle))))
VERSION INFORMATION:
TNS for Linux: Version 11.1.0.6.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.1.0.6.0 - Production
Time: 29-AUG-2011 14:58:08
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.1.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
DBSOURCE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = pdg1.localdomain)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = DBSOURCE.US.JT.COM)
DBTARGET =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = pdg2.localdomain)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = DBTARGET.US.JT.COM)
I can connect from Primary to Standby db (DBTARGET). Given below is the status of that
[oracle@pdg1 ~]$ sqlplus sys@dbtarget as sysdba
SQL*Plus: Release 11.1.0.6.0 - Production on Mon Aug 29 15:01:43 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>

MSEBERG,
Hi yes i am using spfile in both Primary and Standby. Given below is the list for inconsistent properties. It did not report anything.
While running the status report on DBTARGET i get the following error. It waited for about 5 mins before giving the err
Current status for "DBTARGET":
Error: ORA-16662: network timeout when contacting a database
Given below is the complete status.
DGMGRL> SHOW DATABASE 'DBSOURCE' 'StatusReport'
STATUS REPORT
INSTANCE_NAME SEVERITY ERROR_TEXT
DGMGRL> show database 'DBSOURCE' 'LogXptStatus';
LOG TRANSPORT STATUS
PRIMARY_INSTANCE_NAME STANDBY_DATABASE_NAME STATUS
DBSOURCE DBTARGET
DGMGRL> SHOW DATABASE 'DBSOURCE' 'InconsistentProperties';
INCONSISTENT PROPERTIES
INSTANCE_NAME PROPERTY_NAME MEMORY_VALUE SPFILE_VALUE BROKER_VALUE
DGMGRL> SHOW DATABASE 'DBSOURCE' 'InconsistentLogXptProps';
INCONSISTENT LOG TRANSPORT PROPERTIES
INSTANCE_NAME STANDBY_NAME PROPERTY_NAME MEMORY_VALUE BROKER_VALUE
DGMGRL> SHOW DATABASE VERBOSE 'DBSOURCE';
Database
Name: DBSOURCE
Role: PRIMARY
Enabled: YES
Intended State: TRANSPORT-ON
Instance(s):
DBSOURCE
Properties:
DGConnectIdentifier = 'dbsource'
ObserverConnectIdentifier = ''
LogXptMode = 'ASYNC'
DelayMins = '0'
Binding = 'OPTIONAL'
MaxFailure = '0'
MaxConnections = '1'
ReopenSecs = '300'
NetTimeout = '30'
RedoCompression = 'DISABLE'
LogShipping = 'ON'
PreferredApplyInstance = ''
ApplyInstanceTimeout = '0'
ApplyParallel = 'AUTO'
StandbyFileManagement = 'MANUAL'
ArchiveLagTarget = '0'
LogArchiveMaxProcesses = '3'
LogArchiveMinSucceedDest = '1'
DbFileNameConvert = '/u01/app/oracle/oradata/DBSOURCE,
/u01/app/oracle/oradata/DBSOURCE'
LogFileNameConvert = '/u01/app/oracle/oradata/DBSOURCE,
/u01/app/oracle/oradata/DBSOURCE, /u01/app/oracle/flash_recovery_area/DBSOURCE/onlinelog,
/u01/app/oracle/flash_recovery_area/DBSOURCE/onlinelog'
FastStartFailoverTarget = ''
StatusReport = '(monitor)'
InconsistentProperties = '(monitor)'
InconsistentLogXptProps = '(monitor)'
SendQEntries = '(monitor)'
LogXptStatus = '(monitor)'
RecvQEntries = '(monitor)'
HostName = 'pdg1.localdomain'
SidName = 'DBSOURCE'
StandbyArchiveLocation = '/u01/app/oracle/oradata/DBSOURCE'
AlternateLocation = ''
LogArchiveTrace = '0'
LogArchiveFormat = '%t_%s_%r.arc'
LatestLog = '(monitor)'
TopWaitEvents = '(monitor)'
Current status for "DBSOURCE":
SUCCESS
DGMGRL> SHOW DATABASE VERBOSE 'DBTARGET'
Database
Name: DBTARGET
Role: PHYSICAL STANDBY
Enabled: YES
Intended State: APPLY-ON
Instance(s):
DBTARGET
Properties:
DGConnectIdentifier = 'dbtarget'
ObserverConnectIdentifier = ''
LogXptMode = 'ASYNC'
DelayMins = '0'
Binding = 'OPTIONAL'
MaxFailure = '0'
MaxConnections = '1'
ReopenSecs = '300'
NetTimeout = '30'
RedoCompression = 'DISABLE'
LogShipping = 'ON'
PreferredApplyInstance = ''
ApplyInstanceTimeout = '0'
ApplyParallel = 'AUTO'
StandbyFileManagement = 'MANUAL'
ArchiveLagTarget = '0'
LogArchiveMaxProcesses = '3'
LogArchiveMinSucceedDest = '1'
DbFileNameConvert = '/u01/app/oracle/oradata/DBSOURCE,
/u01/app/oracle/oradata/DBSOURCE'
LogFileNameConvert = '/u01/app/oracle/oradata/DBSOURCE/archive,
/u01/app/oracle/oradata/DBSOURCE/archive, /u01/app/oracle/oradata/flash_recovery_area/DBSOURCE,
/u01/app/oracle/flash_recovery_area/DBSOURCE/onlinelog'
FastStartFailoverTarget = ''
StatusReport = '(monitor)'
InconsistentProperties = '(monitor)'
InconsistentLogXptProps = '(monitor)'
SendQEntries = '(monitor)'
LogXptStatus = '(monitor)'
RecvQEntries = '(monitor)'
HostName = 'pdg2.localdomain'
SidName = 'DBTARGET'
StandbyArchiveLocation = '/u01/app/oracle/oradata/DBSOURCE/archive'
AlternateLocation = ''
LogArchiveTrace = '0'
LogArchiveFormat = '%t_%s_%r.arc'
LatestLog = '(monitor)'
TopWaitEvents = '(monitor)'
Current status for "DBTARGET":
Error: ORA-16662: network timeout when contacting a database
DGMGRL> show configuration
Configuration
Name: DBTEST
Enabled: YES
Protection Mode: MaxPerformance
Databases:
DBSOURCE - Primary database
DBTARGET - Physical standby database
Fast-Start Failover: DISABLED
Current status for "DBTEST":
Warning: ORA-16607: one or more databases have failed
Edited by: 880215 on Aug 29, 2011 2:47 PM

Data Guard Manager GUI does not respond

Hello,
I configured a standby datase environment using the Data Guard(9.0.1). Both, the primary and standby are 9.0.1
Few days ago, the standby crashed and i was getting an Ora-12500 error. To solve that error i had to recreate the oracle instance. After that, the primary established connection to the standby and shipped the logs which were applied by the stand. But when i connect to the Data Guard Manager GUI and click on my data guard configuration, the cursor shows up and keep running on the screen indicating that the DGMGUI is working on the background. I left DGMGUI running overnigth but it did not finished. I don't know what is the problem. Any hint ?
Thanks a lot.
Hardy.

You probably want to post this in the General Database forum.
Thanks.

Applying patches to physical standby node(Data Guard 10.2.0.3)

Hello,
I have a data guard 10.2.0.3 environment (1 primary and 1 physical standby on a separate node) on solaris 10 and i want to document the procedure in applying patches to this environment.
I saw the article in Metalink Note 278641.1 which describes the procedure in applying a patchset to both nodes. It looks like both nodes need to be down before applying the oracle patchset.
Can we not apply the patches on only the standby while the primary stays up and running? My guess is you can't if the patches are significant i.e. it changes versions of the oracle binaries. But i want to confirm this.
Also, if we are applying solaris patches, i.e. nothing related to Oracle, we should be able to just apply them to the standby while keeping the primary up and running right?
The following has worked so far but i wanted to find some documentation that confirms it's ok.
1. shutdown oracle on standby node.
2. apply solaris patches...
3. restart oracle on standby node and put in managed recovery mode.
Any comments are appreciated.
Thanks.

Hi
Did you get an answer for your question yet? I have the same problem with one of our databases. Would be very nice, if you could tell me.
Regards
Felix

Data Guard -- v$archive_log applied column shows wrong info

I'm playing with 10g Data Guard. Both Primary and Physical Standby are in Maximum Availability mode. When I query v$archived_log column applied for dest_id=2 (which is physical standby) for some files it shows NO value but alert log on both primary and standby shows file transferred info. Even on physical standby v$archived_log shows log is applied YES value. My question is : So why is Primary database's v$archived_log shows value NO ?
I am trying to setup crontab so that once I see value YES in primary's v$archived_log for dest_id = 2 then I can backup archived log file and delete it from primary database machine. But my perl script won't work because primary v$archived_log shows value NO for applied column for dest_id = 2.
Thanks.

Hi OrionNet,
I think I am looking at the wrong column and also on the wrong database for what I need to do. Let me explain what I am trying to achieve.
I have a shell script to check if archived logs are shipped from Primary to Standby AND if Standby successfully applied it or not. My shell script was looking at Primary databases using following query
select sequence#, archived, applied
from v$archived_log
where dest_id = 2 -- running on Primary BUT looking at standby archived log destination
order by sequence# ;
SEQUENCE# ARCHIEVED APPLIED
=====================
58 YES YES
59 YES YES
*60* YES NO
61 YES YES
After reading [v$archived_log reference entry in manual|http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/dynviews_1016.htm#REFRN30011]
APPLIED Indicates whether the archivelog has been applied to its corresponding standby database (YES) or not (NO). The value is always NO for local destinations.
This column is meaningful at the physical standby site for the ARCHIVED_LOG entries with REGISTRAR='RFS' (which means this log is shipped from the primary to the standby database). If REGISTRAR='RFS' and APPLIED is NO, then the log has arrived at the standby but has not yet been applied. If REGISTRAR='RFS' and APPLIED is YES, the log has arrived and been applied at the standby database.
You can use this field to identify archivelogs that can be backed up and removed from disk.
I think I should use following query on Standby database and not on primary database
select sequence#, registrar, applied
from v$archived_log
where dest_id = 1 -- query running on standby so dest_id = 1 which is standby archive log destination
and registrar = 'RFS'
order by sequence# ;
SEQUENCE# REGISTRAR APPLIED
=====================
58 RFS YES
59 RFS YES
*60* RFS YES
61 RFS YES
So, my shell script should connect to standby database from primary database and evaluate which archive logs to delete after backup from primary machine.
Now I'll generate some gaps on Standby and check query again to make sure what I understand and expect is correct.
Hope I am clear now. Thanks for your help. My bad, I didn't read the manual correctly the first time.

Data guard synchronization after link down b/w primary and physical standby

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