Golden Gate Replication

Hi
Can someone please tell how does the product (Golden Gate) handles the structural differences between different DBMS when distributing data?
Any insight ?

For statement of direction please see:
http://www.oracle.com/technetwork/database/features/availability/312833-129009.pdf
http://www.oracle.com/us/corporate/press/022092 (links at the bottom of page)
As Dominik stated, GoldenGate will eventually replace both ODI CDC and Streams.
Regards,
-joe

Similar Messages

Sequence Error During Golden Gate Replication!

Dear All,
I am replicating 2 databases one way, from production to standby using golden gate.
Both databases are 11gR2 and on Linux.
Replication runs smooth for couple of days and then ends up with this error:
ERROR OGG-01296 Error mapping from ETISLBILLING.PAR_TBLPARNODEIDENTI to ETISLBILLING.PAR_TBLPARNODEIDENTI.
Parent Ket Not Found ETISLBILLING.FK_PARTNERNODE_IDENT
Trigger : ETISLBILLING.TRG_PAR_TBLPARTNERNODE Sequence : SEQ_PAR_TblPartnerIdenti
ORA-20000: Sequence value cannot be changed.
Main error is that value of sequence that is executed during the after insert trigger, does not change and trigger raise error hence the replication process is stopped.
I am just worried that the same triggers and sequences are executed successfully on production database and standby database has is exactly the same as production.
Is there some special treatment for sequences?
Kindly help on this.
Regards, Imran

Pl do not post duplicates - Sequence Error During Golden Gate Replication! Need Hints

Sequence Error During Golden Gate Replication! Need Hints

Dear All,
I am replicating 2 databases one way, from production to standby using golden gate.
Both databases are 11gR2 and on Linux.
Replication runs smooth for couple of days and then ends up with this error:
ERROR OGG-01296 Error mapping from ETISLBILLING.PAR_TBLPARNODEIDENTI to ETISLBILLING.PAR_TBLPARNODEIDENTI.
Parent Ket Not Found ETISLBILLING.FK_PARTNERNODE_IDENT
Trigger : ETISLBILLING.TRG_PAR_TBLPARTNERNODE Sequence : SEQ_PAR_TblPartnerIdenti
ORA-20000: Sequence value cannot be changed.
Main error is that value of sequence that is executed during the after insert trigger, does not change and trigger raise error hence the replication process is stopped.
I am just worried that the same triggers and sequences are executed successfully on production database and standby database has is exactly the same as production.
Is there some special treatment for sequences?
Kindly share your experience and give tips to handle this situation
Regards, Imran

Hi,
Hope this helps
Jan S.
FROM MOS: OGG Replicat Encounters OGG-01396 OGG-00869 ORA-01400 on Primary Key Column [ID 1308824.1]
Cause
==================
from the replicat report, first this error occurs:
WARNING OGG-01396 A complete after image is not available
in <schema.table> at rba 123456 in file ./dirdat/yyy, while inserting
a row into <schema.table> due to missing target row for a key update operation.
NOCOMPRESSUPDATES or FETCHOPTIONS FETCHPKUPDATECOLS may be specified in the
EXTRACT parameter file to include a complete image for key update operations.
The offending record is a primary key update, ... probably the key
<to be found at the mentioned rba 123456 in file ./dirdat/yyy> is not available on target
if the PK is not available at target side, then this error is expected, because HANDLECOLLISIONS turns the PK update into an insert as result of no target record to update.
The problem is that the source PK update record doesn't contain all the after image columns. That is also expected because the update record is intended to only update the affected columns.
As a workaround use FETCHOPTIONS FETCHPKUPDATECOLS on the capture/extract side to get all the after images of the record so that when a HANDLECOLLISIONS logic kicks in, it will be
able to successfully convert the original PK update into insert with all the after image present.
Solution
==================
First check the affected trail file yyy at RBA 123456 with logdump to verify, if the PK update does not have the complete key information as described.
If that is the case and the target table does not have the corresponding PK entry, this issue is hit. Otherwise it is something different.
As a workaround use
==================
FETCHOPTIONS FETCHPKUPDATECOLS on the capture/extract side to get all the after images of
the record so that when a HANDLECOLLISIONS logic kicks in, it will be
able to successfully convert the original PK update into insert with all the after image present.

Golden Gate replication query

Hi,
Is it possible to transform one row from source database into multiple rows in target database using Golden Gate?
Thanks,
Deepak

Another way is using SQLEXEC:
Suppose we have:
at source db -
create table test.wide (id number primary key, COL1 VARCHAR2(25), COL2 VARCHAR2(25), COL3 VARCHAR2(25));at target db -
create table test.thin (id number primary key, col_name VARCHAR2(10), col_value VARCHAR2(25));then in replicat params -
--Replicat group --
REPLICAT REP2
--source and target definitions
--ASSUMETARGETDEFS
SOURCEDEFS /u01/app/oracle/product/11.1.1.1.2ogg411g/dirdef/sourcedef
--target database login --
USERID ogg, PASSWORD ogg
--file for dicarded transaction --
DISCARDFILE /u01/app/oracle/product/11.1.1.1.2ogg411g/discard/rep1_discard.txt, APPEND, MEGABYTES 10
--ddl support
DDL
--Specify table mapping ---
MAP test.t1, TARGET test.t11g, COLMAP (USEDEFAULTS, VCH=@STRNUM(NM));
MAP test.CITIES, TARGET test.CITIES;
MAP test.COUNTRIES, TARGET test.COUNTRIES;
MAP test.LOBEXP, TARGET test.LOBEXP;
MAP test.wide, TARGET test.thin, COLMAP (USEDEFAULTS, COL_NAME="COL1", COL_VALUE=COL1), &
SQLEXEC (ID COL2PROC, QUERY "insert into test.thin values (:id_params+1,'COL2',:value_param)", PARAMS (id_params = id, value_param = COL2)), &
SQLEXEC (ID COL3PROC, QUERY "insert into test.thin values (:id_params+2,'COL3',:value_param)", PARAMS (id_params = id, value_param = COL3)), &
SQLEXEC (ID COL_DELE, ON DELETE, QUERY "delete from test.thin where id in (:id_params+1,:id_params+2)", PARAMS (id_params = id)), &
SQLEXEC (ID COL2UPDA, ON UPDATE, QUERY "update test.thin set col_value=:value_params where 1=:is_updated and id=:id_params+1", PARAMS (is_updated = @IF(@COLTEST(COL2,MISSING,
INVALID),0,1), value_params = COL2, id_params = id)), &
SQLEXEC (ID COL3UPDA, ON UPDATE, QUERY "update test.thin set col_value=:value_params where 1=:is_updated and id=:id_params+2", PARAMS (is_updated = @IF(@COLTEST(COL3,MISSING,
INVALID),0,1), value_params = COL3, id_params = id));
--MAP test.account, TARGET test.thin, COLMAP(USEDEFAULTS, COL_NAME='COL1', COL_VALUE=COL1);
DDLERROR 24344 DISCARD;An extractor params would be -
--extract group--
EXTRACT ext1
--connection to database--
USERID ogg, PASSWORD xxx
EXTTRAIL /u01/app/oracle/product/11.1.1.12ogg/dirdat/ss
SEQUENCE test.*
--DDL support
DDL INCLUDE MAPPED OBJNAME test.*
--DML
TABLE test.*;Works fine - just tested.
Edited by: Artem Khisamiev on 15.10.2012 4:09
Add DELETE and UPDATE DML improvements to replicat params.

Golden gate and Oracle 9i

Hi, I’m wondering if there are any differences between Golden Gate replication for Oracle 10g and Oracle 9i. The reason why I’m asking is that it doesn’t seem to be any release for oracle 9i for windows, so I was thinking of using the oracle10 GG release with Oracle10g to practice replication between Oracle9 and 11gR2.
/Regards

Only corresponding databases having corresponding GoldenGate releases can be replicated.
Oracle GoldenGate version 10 for Oracle 9i database
Oracle GoldenGate version 10 for Oracle 10g database
You cannot use "Oracle GoldenGate version 10 for Oracle 10g database" for Oracle 9i database. By doing so, you will get a library error.
Thanks.

Golden gate for sybase

I have Sybase aSE source and want to use the GOLDEN gate replication to capture the change and put it to flat file or Netezza.
Can GOLDEN gate would be able to do this.
Thanks

Yes you can. See http://docs.oracle.com/cd/E14571_01/integrate.1111/e12644/ogg.htm for more details. For flatfile, use the GoldenGate extract parameter FORMATASCII. There are also other flat file formats, FORMATSQL,FORMATXML.

Golden Gate encryption keys

Hi
Version: Oracle GoldenGate V10.4.0
I'm new in Golden Gate replication.
I've got one task that requires protection of the encryption keys that were created by keygen command (example $ ./keygen 128 4) ? The encyption keys are located in the file ENCKEYS.
Is there any procedure to protect the keys on the server?
Thanks
Mike
http://oracle-base.com/forums/viewtopic.php?f=1&t=14491#wrap

Only way I know is to chmod 600.

Golden Gate SQL Server Replication

Hello Friends..
I need your help in getting some information about Golden Gate SQL Server replication. Could you guys please help me in finding an answers on how a highly transactional sql server does with clustering and replication ? How long does it take to get replica online to users ? Is there any good reading material about Golden gate sql replication? Please help

Documentation is always a nice place to start reading:
http://www.oracle.com/technetwork/middleware/goldengate/documentation/index.html
Regarding replication, please take into account that DDL replication is only supported between oracle databases.
As for your main question, it is all based on the configuration you use. If you have much going on on the source you might add replicats to process the workload in parallel
Greetings,
NK

Golden Gate Sequence Value replication?

Hi all,
I have searched the web, and read the Golden Gate documentation but I've found mixed answers.
I'm just trying to ascertain for certain whether it's possible to automatically replicate sequence values in a bi-directional configuration. Both databases will be identical and both will be 11gR2 with the latest version of GG.
If it is not possible to automatically increment sequences in a bi-directional configuration, what are the best practices for maintaing them?
One option is the alternate sequences on each database, one with even values (for example) and one with odd values, but this requires deployment of new sequences on both databases, something we were hoping would be taken care of by the replication. (yes the sequence creation can be taken care of but the value is not incremented on the target database).
another way that we thought of off the top of our heads is to have an on insert trigger (we only use sequences to generate surrogate keys) which will select nextval from the target database via a db link, but this seems somewhat cumbersome.
What is best practice?

Use sequence parameter... here is from Golden gate document:
SEQUENCE
Valid for Extract
Use the SEQUENCE parameter to extract sequence values from the transaction log forpropagation to a GoldenGate trail and delivery to another database. Currently, GoldenGate supports sequences for the Oracle database.
NOTE DDL support for sequences (CREATE, ALTER, DROP, RENAME) is compatible with, but not required for, replicating sequence values. To replicate just sequence values, you do not need to install the GoldenGate DDL support environment. You can just use the SEQUENCE parameter.
GoldenGate ensures that the values of a target sequence are:
● higher than the source values if the increment interval is positive
● lower than the source values if the increment interval is negative
Depending on the increment direction, Replicat applies one of the following formulas as a test when it performs an insert:
source_highwater_value + (source_cache_size * source_increment_size * source_RAC_nodes) <= target_highwater_value
Or...
source_highwater_value + (source_cache_size * source_increment_size * source_RAC_nodes) >= target_highwater_value
If the formula evaluates to FALSE, the target sequence is updated to be higher than the source value (if sequences are incremented) or lower than the source value (if sequences are decremented). The target must always be ahead of, or equal to, the expression in the parentheses in the formula. For example, if the source highwater value is 40, and CACHE is 20, and the source INCREMENTBY value is 1, and there are two source RAC nodes, the target highwater value should be at least 80:
40 + (20*1*2) <80
If the target highwater value is less than 80, GoldenGate updates the sequence to increase the highwater value, so that the target remains ahead of the source. To get the current highwater value, perform this query:
SELECT last_number FROM all_sequences WHERE sequence_owner=upper('SEQUENCEOWNER') AND sequence_name=upper('SEQUENCENAME');

Golden Gate

Hi,
I have installed 11g R2 Golden gate one way replication for non rac database.
once i started the extract in source database its shows running, but while checking status of extract, its showing stopped.and replicat getting same issue.
Thanks in advance
Regards
Kumar Vellaisamy.

995493 wrote:
Hi,
I have installed 11g R2 Golden gate one way replication for non rac database.
once i started the extract in source database its shows running, but while checking status of extract, its showing stopped.and replicat getting same issue.
Thanks in advance
Regards
Kumar Vellaisamy.You probably have to post the question here Oracle Discussion Forums » System Management and Integration » GoldenGate
GoldenGate

Golden gate missing checkpoint table

Hello gurus,
I am trying to implement live replication with Golden Gate but I can't create the checkpoint table.
GGSCI () 26> ADD CHECKPOINTTABLE
ERROR: Missing checkpoint table specification.
GGSCI (q) 27> ADD REPLICAT rep1, EXTTRAIL /t01/software/gg2/dirdat/rt
ERROR: No checkpoint table specified for ADD REPLICAT.
GGSCI () 28> ADD CHECKPOINTTABLE
ERROR: Missing checkpoint table specification.
GGSCI (qcdvap1031.gnet.qc.bell.ca) 29> edit ./GLOBALS
ERROR: Invalid command.
GGSCI () 30> edit params ./GLOBALS
GGSCHEMA GGS_OWNER
CHECKPOINTTABLE GGS_OWNER.CHKPTAB
GGSCI (q) 31> ADD CHECKPOINTTABLE GGS_OWNER.CHKPTAB
Successfully created checkpoint table GGS_OWNER.CHKPTAB.
GGSCI () 32> ADD REPLICAT rep1, EXTTRAIL /t01/software/gg2/dirdat/rt
ERROR: No checkpoint table specified for ADD REPLICAT.
Not sure what I am missing here, can anyone please help?
Thank you very much,

Hi,
Use the CHECKPOINTTABLE parameter in a GLOBALS parameter file to specify the name of a
default checkpoint table that can be used by all Replicat groups in one or more Oracle
GoldenGate instances. All Replicat groups created with the ADD REPLICAT command will
default to this table unless it is overridden by using the CHECKPOINTTABLE option of that
command.
To create the checkpoint table, use the ADD CHECKPOINTTABLE command in GGSCI.
Regards,

Golden gate supports directory??

Hello ,
I am new to golden gate.
i have made 1 oracle directory in oracle 11 g. when i am replicating data using golden gate, then i am getting the error-->directory doesnot exists
-->Fatal Error executing ddl replication
Do golden gate supports directory or not.. ?
Thanks and regards
Attinder Pal Singh

Directory in what context? The are directories within the GG installation, and Oracle has directories - which are database objects that point to a directory on the file system and has nothing whatsoever to do with GG. You may happen to have the OS directory be used for GG and the same directory used by Oracle, but that means nothing in terms of them working together.
You have an error stack, so post what it is instead of leaving people to guess which directory is missing or does not exist. Was your DDL setup successful? What is the output of the check script?

Create user account on TARGET Golden Gate

Can I create a independent user account on Golden Gate Target ?. This is like we do on a logical standby server.
the user account in question does not exist in the source.
If yes, what are the steps invloved if any that is not normally followed.

Let me rephrase my question :
I have an GG set up between a AIX server ( source) and Linux server ( Target). Currently it is functioning and replication is upto date. I want to create a separate user account on the TARGET. This user account does NOT exist on the SOURCE. Is this possible ?
In other words in a logical standby env, we are allowed to create addition user accoints that are not part of the primary database. Those accounts will have their own objects such as tables, views etc.

Difference between Oracle Transparent Gateway and Golden Gate

Hi Guys
Could you please clear the confusion, What is the difference between Transparent gateway and Golden gate? are they same? In which situation which one to use?
Thanks in advance

user8896122 wrote:
>
Satish Kandi said :
Transparent gateways are a cross-RDBMS "querying" mechanism
>
So you mean if an application (designed to work with oracle only ) can actually access SQL server or DB2 without any modificaton. If i am having transparent gateway on top of DB2 or SQL server ??You caught me. I should have used different words.
No. TG is a mechanism to query other RDBMS from Oracle. GG is a mechanism to have replication between any RDBMS.

Golden Gate Error while replicating 2 oracle databases, reason RAC

Dear All,
My RAC database and the standby database is 11gR2 on Linux.
I was configuring simple replication between RAC and standby database using Golden Gate.
When I start the extract process it does not start on the source database that is RAC, I am configuring golden gate on one node of the RAC.
Here is what I get in my log file:
2011-12-25 15:20:39 INFO OGG-00963 Oracle GoldenGate Manager for Oracle, mgr.prm: Command received from GGSCI on host 10.168.20.31 (START EXTRACT EXT1 ).
2011-12-25 15:20:39 INFO OGG-00975 Oracle GoldenGate Manager for Oracle, mgr.prm: EXTRACT EXT1 starting.
2011-12-25 15:20:39 INFO OGG-00992 Oracle GoldenGate Capture for Oracle, ext1.prm: EXTRACT EXT1 starting.
2011-12-25 15:20:39 INFO OGG-01635 Oracle GoldenGate Capture for Oracle, ext1.prm: BOUNDED RECOVERY: reset to initial or altered checkpoint.
*2011-12-25 15:20:41 WARNING OGG-01423 Oracle GoldenGate Capture for Oracle, ext1.prm: No valid default archive log destination directory found for thread 1.*
*2011-12-25 15:20:41 WARNING OGG-01423 Oracle GoldenGate Capture for Oracle, ext1.prm: No valid default archive log destination directory found for thread 2.*
2011-12-25 15:20:42 INFO OGG-00546 Oracle GoldenGate Capture for Oracle, ext1.prm: Default thread stack size: 10485760.
2011-12-25 15:20:42 ERROR OGG-00446 Oracle GoldenGate Capture for Oracle, ext1.prm: The number of Oracle redo threads (2) is not the same as the number of checkpoint threads (1). EXTRACT groups on RAC systems should be created with the THREADS parameter (e.g., ADD EXT <group name>, TRANLOG, THREADS 2, BEGIN...).
2011-12-25 15:20:42 ERROR OGG-01668 Oracle GoldenGate Capture for Oracle, ext1.prm: PROCESS ABENDING.
Kindly suggest what I have to do to fix this error.
Regards,
Imran

For more understanding of the problem here is the output of command:
view report ext1
GGSCI (racnode1) 2> view report ext1
Oracle GoldenGate Capture for Oracle
Version 11.1.1.1.2 OGGCORE_11.1.1.1.2_PLATFORMS_111004.2100
Linux, x64, 64bit (optimized), Oracle 11g on Oct 7 2011 05:37:17
Copyright (C) 1995, 2011, Oracle and/or its affiliates. All rights reserved.
Starting at 2011-12-26 10:50:37
Operating System Version:
Linux
Version #1 SMP Fri Aug 26 19:08:58 EDT 2011, Release 2.6.18-274.3.1.el5xen
Node: racnode1
Machine: x86_64
soft limit hard limit
Address Space Size : unlimited unlimited
Heap Size : unlimited unlimited
File Size : unlimited unlimited
CPU Time : unlimited unlimited
Process id: 11430
Description:
** Running with the following parameters **
extract group
extract ext1
connection to the database
userid ggs_owner, password ******
hostname and port for trail
rmthost x.x.x.x, mgrport ****
--path and name for the trail
rmttrail /u01/app/ggs/dirdat/lt
--DDL Support
ddl include mapped objname radius_dsl.*;
--DML
table test.*;
2011-12-26 10:50:37 INFO OGG-01635 BOUNDED RECOVERY: reset to initial or altered checkpoint.
Bounded Recovery Parameter:
Options = BRRESET
BRINTERVAL = 4HOURS
BRDIR = /u01/app/ggs
CACHEMGR virtual memory values (may have been adjusted)
CACHEBUFFERSIZE: 64K
CACHESIZE: 8G
CACHEBUFFERSIZE (soft max): 4M
CACHEPAGEOUTSIZE (normal): 4M
PROCESS VM AVAIL FROM OS (min): 16G
CACHESIZEMAX (strict force to disk): 13.99G
Database Version:
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
Database Language and Character Set:
NLS_LANG environment variable specified has invalid format, default value will be used.
NLS_LANG environment variable not set, using default value AMERICAN_AMERICA.US7ASCII.
NLS_LANGUAGE = "AMERICAN"
NLS_TERRITORY = "AMERICA"
NLS_CHARACTERSET = "WE8MSWIN1252"
Warning: your NLS_LANG setting does not match database server language setting.
Please refer to user manual for more information.
2011-12-26 10:50:38 INFO OGG-00546 Default thread stack size: 10485760.
2011-12-26 10:50:38 INFO OGG-01515 Positioning to begin time Dec 26, 2011 9:35:19 AM.
Here is the output of command (From target database)
view report rep1
Oracle GoldenGate Delivery for Oracle
Version 11.1.1.1.2 OGGCORE_11.1.1.1.2_PLATFORMS_111004.2100
Linux, x64, 64bit (optimized), Oracle 11g on Oct 7 2011 05:44:59
Copyright (C) 1995, 2011, Oracle and/or its affiliates. All rights reserved.
Starting at 2011-12-25 11:24:46
Operating System Version:
Linux
Version #1 SMP Tue May 31 13:22:04 EDT 2011, Release 2.6.18-238.12.1.el5
Node: standbydb.etisalcom.private
Machine: x86_64
soft limit hard limit
Address Space Size : unlimited unlimited
Heap Size : unlimited unlimited
File Size : unlimited unlimited
CPU Time : unlimited unlimited
Process id: 8812
Description:
** Running with the following parameters **
Replicat group
replicat rep1
--source and target definitions
ASSUMETARGETDEFS
target database login
userid ggs_owner, password ******
file for dicarded transaction
discardfile /u01/app/ggs/discard/rep1_discard.txt, append, megabytes 10
--ddl support
DDL
Specify table mapping -
map test.*, target test.*;
CACHEMGR virtual memory values (may have been adjusted)
CACHEBUFFERSIZE: 64K
CACHESIZE: 512M
CACHEBUFFERSIZE (soft max): 4M
CACHEPAGEOUTSIZE (normal): 4M
PROCESS VM AVAIL FROM OS (min): 1G
CACHESIZEMAX (strict force to disk): 881M
Database Version:
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
Database Language and Character Set:
NLS_LANG environment variable specified has invalid format, default value will be used.
NLS_LANG environment variable not set, using default value AMERICAN_AMERICA.US7ASCII.
NLS_LANGUAGE = "AMERICAN"
NLS_TERRITORY = "AMERICA"
NLS_CHARACTERSET = "WE8MSWIN1252"
Warning: your NLS_LANG setting does not match database server language setting.
Please refer to user manual for more information.
** Run Time Messages **
I have also observed that the process extract stops after few minutes. When it stops and I view the log it says:
*ERROR OGG-00446 Oracle GoldenGate Capture for Oracle, ext1.prm: error 2 (No such file or directory) opening redo log +FRA/racdb/archivelog/1_12041_763744886.dbf*
Means it is not getting the path of ASM archive log destination.
what should I do in this case, kindly help.
Regards,
Imran

Golden Gate Replication

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