Why Do Oracle DB File Sequential Reads Show Up in a Full Table Scan?
There are four primary reasons why you see Oracle DB File Sequential Read wait events in a full scan operation. Learn more.
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There are four primary reasons why you see Oracle DB File Sequential Read wait events in a full scan operation. Learn more.
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To minimize the Oracle db file sequential read waits you can optimize the SQL statement or reduce the average wait time. Learn more.
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The Oracle db file sequential read wait event is initiated by SQL statements that perform single-block read operations. Learn when these waits may indicate a need for tuning.
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The Oracle library cache pin wait event occurs when the session tries to pin an object in the library cache to modify or examine it. Learn what actions to take to tune for it.
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Read about some of the most common Oracle wait events and get information on how to tune performance to resolve them.
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Learn more about the Oracle Block Change Tracking Buffer wait event and how to tune for it here.
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Log file switch completion is the time a session waits for recording and archiving changes to data through redo log generation. Learn about performance hits.
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Buffer busy wait occurs when a session tries to access a block in the buffer cache but the buffer is busy. Learn about performance impact.
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The three control file read and write wait events all contribute to the time Oracle takes to keep the control file current. Learn more.
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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 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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