Replication Server stores messages destined for data servers or other sites on partitions. It allocates the space in partitions to stable queues and operates in 1MB chunks called segments. Each stable queue holds messages to be delivered to another Replication Server or to a database.
The rs_init program assigns the initial partition to the Replication Server. Refer to the Replication Server installation and configuration guides for more information about working with partitions in rs_init.
The minimum initial partition is 20MB. You may need additional partitions, depending on the number of databases the Replication Server manages and the number of remote sites to which the Replication Server distributes messages. Larger partitions may also be necessary when subscriptions are initiated or when there are long-running transactions.
A Replication Server can have any number of partitions of varying sizes. The sum of the partition sizes is the Replication Server capacity for queued transactions.
Use the create partition command to assign additional partitions. See the Replication Server Reference Manual for details.
When choosing a partition for Replication Server, consider these guidelines:
Replication Server partitions should be operating system raw partitions.
Do not mount the partition for use by the operating system.
Do not use the partition for any other purpose, such as storing file systems, maintaining swap space, or locating Adaptive Server devices.
Allocate the entire partition to Replication Server. If you allocate just a portion of a partition for Replication Server, you cannot use the remainder for any other purpose.
Do not allow any users read/write permissions on the partition unless the user is going to start Replication Server.
You can choose how Replication Server allocates queue segments to partitions or you can use the default mechanism. The default mechanism assigns queue segments to the next partition in an ordered list. Use the alter connection or alter route command to choose a different allocation mechanism. See “Allocating queue segments” on page 253 in the Replication Server Administration Guide Volume 2 for more information.
