List of disableIndexStatsRefresher() Examples

Examples of disableIndexStatsRefresher()

org.apache.derby.iapi.sql.dictionary.DataDictionary.disableIndexStatsRefresher()

Disables automatic refresh/creation of index statistics at runtime.

If the daemon is disabled, it can only be enabled again by rebooting the database. Note that this method concerns diabling the daemon at runtime, and only the automatic updates of statistics. If wanted, the user would disable the daemon at boot-time by setting a property (system-wide or database property).

Usage note: This method was added to allow the index refresher itself to notify the data dictionary that it should be disabled. This only happens if the refresher/daemon experiences severe errors, or a large amount of errors. It would then disable itself to avoid eating up system resources and potentially cause side-effects due to the errors.

            // shut down. On certain platforms, this results in database
            // files that can't be deleted until the VM exits.
            DataDictionary dd = db.getDataDictionary();
            // dd is null if the db is an active slave db (replication)
            if (dd != null) {
                dd.disableIndexStatsRefresher();
            }
        }


        if (se.getSeverity() == ExceptionSeverity.DATABASE_SEVERITY) {
        ContextService.getFactory().notifyAllActiveThreads(this);

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Examples of disableIndexStatsRefresher()

Examples of org.apache.derby.iapi.sql.dictionary.DataDictionary.disableIndexStatsRefresher()