Nonstop Database, HiRDB Version 9 System Operation Guide
Move a unit of a HiRDB parallel server configuration. The following figure illustrates the procedure:
Use of the system reconfiguration command (pdchgconf command) eliminates the need to terminate HiRDB normally. Note that HiRDB Advanced High Availability must be installed in order to use this command.
Deploy a new server machine, and install and set up HiRDB. For details about installing and setting up HiRDB, see the HiRDB Version 9 Installation and Design Guide.
Check that the following are the same as in your existing units:
Prepare the shells from which you will disconnect and connect the shared disk. Execute the shells as a superuser. For safety's sake, do not include in these shells any commands other than commands for disconnecting and connecting the disk.
Use the procedure explained below to create HiRDB system definitions that reflect the change in the unit configuration.
pdconfchk -d chgconf |
Check the HiRDB system definitions in the $PDDIR/conf/chgconf directory. If errors are detected, correct the HiRDB system definitions, and then execute the pdconfchk command again.
pdchgconf |
Replace the HiRDB system definitions with the updated HiRDB system definitions. At this time, the shells that you created in step (2) for disconnecting and connecting the disk are executed.
Check if the following operands in the client environment definitions are specified; if the front-end server (FES1) that you moved is specified in these operands, change their values as appropriate:
We recommend that after the command has executed you check whether the execution results are correct. For details on how to check command execution results, see the manual HiRDB Version 9 Command Reference.
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