What is sync and async in Oracle Data Guard?

What is sync and async in Oracle Data Guard?

The synchronous log transport mode is required for the Maximum Protection and Maximum Availability data protection modes. LogXptMode = (‘ASYNC’): Conversely, asynchronous mode (ASYNC) allows updates (DML) to be committed on the primary server before the log file arrives on the standby servers.

What is Data Guard far sync?

An Oracle Data Guard far sync instance is a remote Oracle Data Guard destination that accepts redo from the primary database and then ships that redo to other members of the Oracle Data Guard configuration.

What is synchronous and asynchronous in Oracle?

A workflow process can be either synchronous or asynchronous. A synchronous process is a process that can be executed without interruption from start to finish. An asynchronous process is a process that the Workflow Engine cannot complete immediately because it contains activities that interrupt the flow.

Is Oracle Data Guard synchronous replication?

The advantages of physical replication in minimizing I/O impact also extend to the standby database where unlike logical replication, the Data Guard apply process does not generate local redo that must be written and archived to disk. Data Guard offers two choices of transport services: synchronous and asynchronous.

How do I sync data guard?

To configure Far Sync, perform the following steps.

1. Create a Far Sync control file from a primary and copy it to the Far Sync server.
2. Mount the Far Sync instance with the Far Sync control file you created.
3. Set parameters for the primary database.
4. Set parameters for Far Sync.
5. Set parameters for the standby database.

What is affirm and Noaffirm in dataguard?

AFFIRM and NOAFFIRM AFFIRM —specifies that a redo transport destination acknowledges received redo data after writing it to the standby redo log. NOAFFIRM —specifies that a redo transport destination acknowledges received redo data before writing it to the standby redo log.

What is Oracle far?

How do I sync Data Guard?

What is the difference between Oracle Data Guard and Active Data Guard?

The main difference between Oracle Data Guard and Active Data Guard is that Oracle Data Guard is an extension to the Oracle RDBMS and provides data availability and protection while Active Data Guard is an extension of Oracle Data Guard and improves the production database performance for critical transactions.

What is affirm and Noaffirm in Data Guard?