OLEDB Wait
The OLEDB Wait it usually caused by calls to a remote server waiting for the data to return from the remote server. This can occur with a linked server connection, executing a query on another server, or other methods. To …
The OLEDB Wait it usually caused by calls to a remote server waiting for the data to return from the remote server. This can occur with a linked server connection, executing a query on another server, or other methods. To …
LCK_M_IX Severity This is one of the more serious wait types and it may indicate locking and blocking. The IX refers to INTENT EXCLUSIVE. Description This is an Intent Exclusive Lock, occurs when a task is waiting to acquire an exclusive …
LCK_M_X Severity May indicate locking and blocking, possibly related to IO bottlenecks. Description This is an Exclusive Lock, that commonly occurs when lock escalation is occurring. Suggestion Look for large transactions, tune queries to run faster. Check for lock escalation. …
The PREEMPTIVE_OS_GETPROCADDRESS wait type occurs when SQL Server is making a call to the operating system for something like xp_create_subdir, or other xp_ type procedures. When this occurs it clogs things up temporarily and causes other parts of your database to …
SOS_SCHEDULER_YIELD
Wait: PREEMPTIVE_OS_COMOPS Preemptive waits means that something is interrupting SQL Server and the database is waiting for this to complete. Non-Preemptive means that there is cooperation with SQL Server. In this case the PREEMPTIVE_OS_COMOPS wait means that SQL Server has been …
The Historic Waits advisor gives you a break down of the waits that have been caused by a given query or plan. For instance in screenshot below you can see that IO_COMPLETION is the most common wait type from the …
The Historic Waits reports may be the most valuable part of the entire Database Health Reports Project. With the historic waits reporting you can track down not just what your system is waiting on now, but also what it …
SQL Server wait statistics refer to the amount of time that a SQL Server process spends waiting on certain types of events or resources before it can complete its work. These events or resources could include things like locks on …
SQLTRACE_BUFFER_FLUSH SQLTRACE_INCREMENTAL_FLUSH_SLEEP SQLTRACE_FILE_READ_IO_COMPLETION SQLTRACE_LOCK SQLTRACE_SHUTDOWN SQLTRACE_WAIT_ENTRIES TRACEWRITE