Introduction: In the previous posts, we had covered the step-by-step installation of Oracle GoldenGate (OGG) for both Oracle and MySQL environments. Please visit those, links are given below. Now for replication we are using Oracle database as source and MySQL database as target. In this article, we will go through the essential steps to prepare Oracle (source) and MySQL (target) databases for GoldenGate .  Oracle GoldenGate 23ai Installation for Oracle  Oracle GoldenGate 23ai Installation for MySQL  Prerequisites:  Below are the minimum requirements.    Oracle database should be installed on source server.    MySQL database should be installed on target server.  Connectivity between GoldenGate server and database servers.     Environment Used:                   Server        Source (Oracle)        Target (MySQL)        OGG (Oracle)        OGG (MySQL)                        Hostname        orcl.oraeasy.com        mysqlOGG.oraeasy.com        ogg.oraeasy.com        mysqlOGG.oraeasy.com ...