/en/admin/managing-db/managing-nodes/rebalancing-data-across-nodes/ Recent content in Rebalancing data across nodes on OpenText Analytics Database 26.2.x Hugo -- gohugo.io /en/admin/managing-db/managing-nodes/rebalancing-data-across-nodes/rebalancing-data-using-admin-tools-ui/ Mon, 01 Jan 0001 00:00:00 +0000 /en/admin/managing-db/managing-nodes/rebalancing-data-across-nodes/rebalancing-data-using-admin-tools-ui/ <p>To rebalance the data in your database:</p> <ol> <li> <p>Open the Administration Tools. (See <a href="../../../../../en/admin/using-admin-tools/#">Using the administration tools</a>.)</p> </li> <li> <p>On the <strong>Main Menu</strong>, select <strong>View Database Cluster State</strong> to verify that the database is running. If it is not, start it.</p> </li> <li> <p>From the <strong>Main Menu</strong>, select <strong>Advanced Menu</strong> and click <strong>OK</strong>.</p> </li> <li> <p>In the <strong>Advanced Menu</strong>, select <strong>Cluster Management</strong> and click <strong>OK</strong>.</p> </li> <li> <p>In the <strong>Cluster Management</strong> menu, select <strong>Re-balance Data</strong> and click <strong>OK</strong>.</p> </li> <li> <p>Select the database you want to rebalance, and then select <strong>OK</strong>.</p> </li> <li> <p>Enter the directory for the Database Designer outputs (for example <code>/tmp)</code> and click <strong>OK</strong>.</p> </li> <li> <p>Accept the proposed <a class="glosslink" href="../../../../../en/glossary/k-safety/" title="For more information, see Designing for K-Safety.">K-safety</a> value or provide a new value. Valid values are 0 to 2.</p> </li> <li> <p>Review the message and click <strong>Proceed</strong> to begin rebalancing data.</p> <p>The Database Designer modifies existing projections to rebalance data across all database nodes with the K-safety you provided. A script to rebalance data, which you can run manually at a later time, is also generated and resides in the path you specified; for example <code>/tmp/extend_catalog_rebalance.sql</code>.</p> <div class="admonition important" role="alert"> <h4 class="admonition-head">Important</h4> Rebalancing data can take some time, depending on the number of projections and the amount of data they contain. It is recommended that you allow the process to complete. If you must cancel the operation, use Ctrl+C. </div> <p>The terminal window notifies you when the rebalancing operation is complete.</p> </li> <li> <p>Press <strong>Enter</strong> to return to the Administration Tools.</p> </li> </ol> /en/admin/managing-db/managing-nodes/rebalancing-data-across-nodes/rebalancing-data-using-sql-functions/ Mon, 01 Jan 0001 00:00:00 +0000 /en/admin/managing-db/managing-nodes/rebalancing-data-across-nodes/rebalancing-data-using-sql-functions/ <p>OpenText™ Analytics Database has three SQL functions for starting and stopping a cluster rebalance. You can call these functions from a script that runs during off-peak hours, rather than manually trigger a rebalance through Administration Tools.</p> <ul> <li> <p> <code><a href="../../../../../en/sql-reference/functions/management-functions/cluster-functions/rebalance-cluster/#">REBALANCE_CLUSTER</a></code> rebalances the database cluster synchronously as a session foreground task.</p> </li> <li> <p> <code><a href="../../../../../en/sql-reference/functions/management-functions/cluster-functions/start-rebalance-cluster/#">START_REBALANCE_CLUSTER</a></code> asynchronously rebalances the database cluster as a background task.</p> </li> <li> <p> <code><a href="../../../../../en/sql-reference/functions/management-functions/cluster-functions/cancel-rebalance-cluster/#">CANCEL_REBALANCE_CLUSTER</a></code> stops any rebalance task that is currently in progress or is waiting to execute.</p> </li> </ul>