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CDC Capture Lag: Read sys.dm_cdc_log_scan_sessions

February 6, 2010
Pinal Dave
SQL Tips and Tricks
Change Data Capture, SQL Monitoring, SQL Server, Transaction Log

CDC capture lag measures work committed at the source that the capture process has not yet exposed. Compare known markers, scan sessions and captured LSNs, and distinguish capture progress from a downstream consumer reading the changes.

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A landing net lifted from a clear stream holds one large trout while small fish slip back through the mesh.

Your First Extended Events Session

June 7, 2009
Pinal Dave
SQL Tips and Tricks
SQL Extended Events, SQL Monitoring, SQL Performance, SQL Server

Build your first Extended Events session for slow SQL calls, choose a bounded ring buffer or file target, and read the captured result.

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Restart History: Preserve Startup Evidence Before Logs Cycle

May 19, 2009
Pinal Dave
SQL Tips and Tricks
SQL DMV, SQL Error Messages, SQL Monitoring, SQL Server Services

Restart history records startup evidence before retained logs disappear. Keep each source and timestamp separate, and test repeat collection with synthetic archives.

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A Weekly Routine for SQL Server Administration

May 6, 2009
Pinal Dave
SQL Tips and Tricks
Best Practices, DBA, SQL Backup and Restore, SQL Monitoring

A weekly routine for SQL Server Administration checks recovery, failures, capacity, integrity, security, and pending changes in a practical order.

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Replacing Profiler Traces With Extended Events

April 10, 2009
Pinal Dave
SQL Tips and Tricks
SQL Extended Events, SQL Monitoring, SQL Profiler, SQL Server, SQL Trace

Replacing Profiler traces with Extended Events starts with the question, a focused event session, and a bounded target that avoids needless load.

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Standard DBA Reports You Can Write in T-SQL

April 10, 2009
Pinal Dave
SQL Tips and Tricks
DBA, SQL Backup and Restore, SQL Monitoring, SQL Server, SQL Server Agent

Standard DBA reports can use T-SQL to show backup age, database sizes, job failures, login changes, and errors in one weekly review.

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Tracking Which Updates Every Server Has

January 27, 2009
Pinal Dave
SQL Tips and Tricks
Cumulative Update, DBA, SQL Monitoring, SQL Patch, SQL Server

Tracking Which Updates each SQL Server runs takes a dated inventory table, SERVERPROPERTY snapshots, and a report of instances behind the target.

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