To start the secondary nodes, install Sybase IQ15.4 and then synchronize from the coordinator node. When you migrate a query node, it becomes a reader node.
Back
up the query node files. Sybase recommends that you at least back up
existing catalog .db, catalog .log and iqmsg files.
Issue a dbbackup command to synchronize
servers. You might have a different name for the query node's catalog
file, depending on your configuration. In the following example, q1.db is
the catalog file name on the query node:
SQL Anywhere Backup Utility Version 11.0.1.5533 Debug
(702 of 699 pages, 100% complete)
Transaction log truncated
Database backup completed
If your query nodes do not use a different catalog
database name, skip to step 4.
Step 2 synchronized the catalog database file from the coordinator.
If you prefer to use the same catalog database file name as the
coordinator, adjust any server start and stop administration scripts
on the secondary nodes to use the new name.
To retain the same catalog database file names:
Rename the synchronized coordinator catalog database file
name. For example, assuming the coordinator file was called main.db and
the secondary server was called q1.db enter:
mv main.db q1.db
rename main.db q1.db
Rename the log file for the query node. This is
necessary as the file renamed above still contains an internal pointer
to main.log: