SQL Server Foreign Keys: Some Mystery Explained! (Part 2)
This article provides detailed information on Foreign Keys in SQL Server. Get a free Stored Procedure to find Foreign Keys in a child table.
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This article provides detailed information on Foreign Keys in SQL Server. Get a free Stored Procedure to find Foreign Keys in a child table.
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Foreign keys have a bad reputation, but here you can learn how they can benefit and even improve query performance.
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The performance impact of database locks can be substantial. Learn best practices for detecting and resolving these blocking scenarios quickly.
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The row cache lock wait event is associated with a specific enqueue type on a data dictionary row. Learn why this happens and what you can do to tune for it.
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Waits on enq: TM – contention in Oracle indicate there are unindexed foreign key constraints. Learn more about how foreign key constraints relate to this wait and how to tune for it.
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The error ORA-06502 PL/SQL can be addressed by modifying the data, how it’s declared or the operations on it. Learn more.
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The file open wait event signals problems outside the database, such as performance issues in the database server. Learn how to assess and fix these issues.
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When a database isn’t properly configured or application logic stresses normal processing, you may have issues with the RO enqueue wait event. Learn more.
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Learn how Oracle determines the best index access path for finding rows in a table, and how this may impact performance.
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The latch free wait event occurs when a session tries to get a latch but fails because another session has it. Learn how this wait causes performance issues.
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The log buffer space wait event occurs when server processes write data into the log buffer faster than the LGWR process can write it out. Learn more.
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WRITELOG wait types in SQL Server can indicate bottlenecks in the disk where the transaction log is stored or inefficient use of transactions. Learn how to tune for this wait type.
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