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Introduction: A Refreshable Clone PDB is a special type of Pluggable Database introduced in Oracle Database 12.2 that allows you to periodically synchronize a cloned PDB with its source by applying redo data. In this article, we will configure the Refreshable Clone PDB. Refresh Mode : Automatic Refresh Mode : This refresh mode is a configuration of a refreshable clone PDB in Oracle Database where the clone is automatically synchronized with its source PDB at fixed, predefined time intervals. The refresh occurs based on the interval specified in the REFRESH MODE EVERY n MINUTES clause during creation or modification of the clone. Manual Refresh Mode : This refresh mode is a configuration of a refreshable clone PDB in Oracle Database where synchronization with the source PDB occurs only when explicitly initiated by the DBA. The clone is created using the REFRESH MODE MANUAL clause and refreshed on demand using the ALTER PLUGGABLE DATABASE pdb_name REFRESH co...

Introduction: Oracle Logical Standby Database can be used for write opeartion if required to do reports and test any statement. Although if the same transaction got executed on Primary then it will create conflict and SQL apply got abrupt on Standby, hence it will result in out of sync between Primary & Standby. In this article, we will see how to resolve such issue by skipping the transaction. Prerequisites: Logical standby should be configured and in sync. Environment: Server Primary Standby Hostname drdb.oraeasy.com dcdb.oraeasy.com OS OEL 9 OEL 9 SID ORADBDR ORADBDC Service Name ORADBDR ORADBDC Now proceed to create the issue scenario and its resolution step by step: 1. Check the sync between Primary and Standby. ==> Primary: SQL> select name,db_unique_name,databas...