ENQUEUE REPLICATION SERVER INSTALL

In the database layer, you can set up native database replication between primary and secondary databases to ensure high availability. For high availability of ASCS, use Enqueue Replication Server (ERS) to replicate the lock table entries.

The documentation says that the replicated lock table is stored in a shared memory area, then, when the instance is started in the other host (failover) is cappable to read this information form the shared memory area. Isolate the crash by removing the application server from the load balancer. Similarly, the dialog instance in node 1 restarts when we failover from node 2 to node1. Will be possible for the host B read the replicated lock table in the host C after the fail over? The dialog instance in node 2 restarts when we do a failover from node 1 to node 2. This section only applies, if using Enqueue replication server 2 architecture. Host A: Stand by Server for the failover. As Enqueue Replication Server 2 (ERS2) is also clustered, ERS2 virtual IP address must be also configured on Azure ILB in addition to above SAP ASCS/SCS IP. Host B: Stand by Server for the failover. Use this parameter if the replication port of the enqueue server cannot be set to the default port 5XX16 (XX is the instance number). This definition appears frequently and is found in the following Acronym Finder. An optimal effect of the enqueue replication mechanism can be achieved when combining the application level redundancy with a high availability cluster solution, as.

ENQUEUE REPLICATION SERVER INSTALL

As per my understanding, we can install en enqueue replication server (ERS) in other host (B), but in case of fail over, the sap instance needs to be started in the same host of the ERS (B) to be able to access to the lock table of the ERS.Дo you know if posible to instal the ERS in other host, and the sap instance in another? The scenario looks like: ERS stands for Enqueue Replication Server (SAP). The SAP Enqueue Replication Server 2 constitutes application level redundancy for one of the most crucial components of the SAP S/4HANA ABAP Platform stack, the enqueue service. Once done, restart the SAP system and start the ASCS and the ERS with appropriate startsap commands.Dear friends, we are planning an HA instalation, but we have a doubt about the Enqueue Replication Server.

In this case only the enqueue server (with the enqueue replication server and. enque/server/replication is a SAP Parameter attribute which is used to control Use the Enqueue Replication Server information. Step 9 : Add the below parameter on the Default profile If you want to use the standalone enqueue server, you have to set the. Step 8 : Add the below parameter on the ASCS instance profile Step2: create the following directory structure under the file-system where you will install ERS.

Step1: Log on to your host where u need ERS and switch to adm user.

Step 7 : Create an instance profile in the profile directory* Enqueue Replication Server Part 2 - Installing ERS.