PRIVACY Wait Type Explained

SQL Server's documented wait types follow specific naming conventions tied to engine subsystems (PAGEIOLATCH, CXPACKET, LCK_M_X, etc.). PRIVACY does not appear in Microsoft's official wait type documentation for any version from SQL Server 2008 through 2025.

If PRIVACY appears in sys.dm_os_wait_stats, it may be an undocumented internal wait type used by the engine for background housekeeping. SQL Server contains many internal wait types that are not publicly documented and are not indicative of performance problems.

Some third-party monitoring tools create custom wait categories or rename wait types for business context. If you see PRIVACY reported prominently by a monitoring tool, verify whether the tool is relabeling or grouping standard wait types under this name.

-- Check if PRIVACY appears in wait statistics
SELECT 
    wait_type,
    waiting_tasks_count,
    wait_time_ms,
    max_wait_time_ms,
    signal_wait_time_ms
FROM sys.dm_os_wait_stats
WHERE wait_type = 'PRIVACY'
    AND waiting_tasks_count > 0;

-- Check for custom extended event sessions referencing PRIVACY
SELECT 
    s.name AS session_name,
    se.name AS event_name,
    sf.name AS field_name,
    sf.value
FROM sys.server_event_sessions s
JOIN sys.server_event_session_events se ON s.event_session_id = se.event_session_id
JOIN sys.server_event_session_fields sf ON se.event_session_id = sf.event_session_id
WHERE sf.value LIKE '%PRIVACY%' OR s.name LIKE '%PRIVACY%';

-- Identify third-party monitoring tools accessing wait stats
SELECT 
    r.session_id,
    r.request_id,
    r.command,
    t.text,
    s.program_name,
    s.host_name
FROM sys.dm_exec_requests r
CROSS APPLY sys.dm_exec_sql_text(r.sql_handle) t
JOIN sys.dm_exec_sessions s ON r.session_id = s.session_id
WHERE t.text LIKE '%wait_stats%' 
   OR t.text LIKE '%PRIVACY%'
   OR s.program_name LIKE '%monitor%';

No fix is required for PRIVACY waits. This wait type is not performance-relevant and can be safely ignored. If it appears with significant accumulated wait time, it is benign background activity.

-- Reset wait statistics if you want to establish a clean baseline
-- WARNING: This clears ALL wait statistics, losing valuable baseline data
-- Only run during maintenance windows after documenting current waits
DBCC SQLPERF('sys.dm_os_wait_stats', CLEAR);
PRINT 'Wait statistics cleared. Monitor for legitimate wait types only.';

Add PRIVACY to your monitoring tool's wait type exclusion list alongside other commonly ignored waits (WAITFOR, LAZYWRITER_SLEEP, SQLTRACE_BUFFER_FLUSH, etc.). This prevents false alerts from non-actionable wait types.

Audit third-party monitoring solutions to ensure they report standard SQL Server wait types without artificial categorization. Document any custom groupings separately from core performance metrics.

Focus performance tuning efforts on documented, actionable wait types that correspond to real SQL Server subsystems.