According to the Oracle database documentation there are two types of constraints: DEFERRED and NOT DEFERRED. The first one can be evaluated at the and of the transaction, and the second one if validated immediately. On the other hand Oracle GoldenGate can handle the replication when the target uses both of them. Let’s find out […]
How Oracle GoldenGate Replicat handles Foreign Key Constraints Read More »
This is a follow up of my previous article about an analysis of all Extract parameters for Oracle GoldenGate 11.2 and 12.1. It is a comprehensive analysis of how the parameters UPDATERECORDFORMAT COMPACT|FULL, (NO)COMPRESSUPDATES, (NO)COMPRESSDELETES, (IGNORE)GETUPDATEBEFORES and also (NO)LOGALLSUPPCOLS used in Extract param file affect what is written to the trail file.
What is Oracle GoldenGate Extract writing to the trail file (OGG 12.2 & 12.3) Read More »
This is a follow up of my previous article about an analysis of all Extract parameters for Oracle GoldenGate 11.2. How the parameters UPDATERECORDFORMAT COMPACT|FULL, (NO)COMPRESSUPDATES, (NO)COMPRESSDELETES, (IGNORE)GETUPDATEBEFORES affect what is written to the trail file.
What is Oracle GoldenGate Extract writing to the trail file (OGG 12.1) Read More »
This article presents the complete full list of cases that has been used in Extract analysis of Oracle GoldenGate 11.2
GoldenGate Extract 11.2 test cases Read More »
In one of my previous posts I have made a detailed analysis about supplemental logging in the database that is a result of ADD TRANDATA command from OGG. Apart of what is written to the redo log it is another subject of what is read from the redo log by OGG and written to the
What is Oracle GoldenGate Extract writing to the trail file (OGG 11.2) Read More »
Oracle licenses GoldenGate based on the CPU count of the source database that is replicated. Starting from version 12.3 of OGG the Extract process logs in the error log the information about cores on the sources.
Oracle GoldenGate 12.3 traces CPU count on source databases Read More »
The documentation of Oracle GoldenGate 12.2 does not mention it explicitly: before you start running the instance make sure that you have a Java environment correct & running. If not – you may later run into some strange errors which are difficult to solve. They will happen if the Java environment is set up correctly.
Oracle GoldenGate – errors during jagent configuration Read More »
Let’s consider a poor man’s data encryption in the database. We’ll use AES128 CBC algorithm to encrypt the data. The application is written in such way that it can encrypt/decrypt the data while doing database operations. This solution is license free, works with no additional database licenses. A new requirement has arrived – the data
Oracle GoldenGate replication + AES encryption on the fly – part 1 of 2 Read More »
Oracle GoldenGate 12.3 Microservices Architecture just came out. This is a separate build, and in contrary to previous architecture (called now Classic Architecture) has distinct installation binaries and completely different directory structure after installation. Processes are run from different binaries and the whole configuration is also completely different. This article is a complete tutorial which
Oracle GoldenGate Microservices Architecture 12.3 quick set up tutorial Read More »
A new version of Oracle GoldenGate 12.3 has been released on Friday, 18th August. This is a brief summary what are the new features.
Oracle GoldenGate 12.3 is available Read More »