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Oracle Exam 1Z0-076 Topic 1 Question 3 Discussion
Topic #: 1
You notice that the SQL apply lag on your logical standby database has increased but the redo transport lag has not.
Which four could be reasons for the increase in SQL apply lag?
The SQL apply lag on a logical standby database can be caused by several factors:
A: An undersized undo tablespace can lead to delays in SQL apply operations as it may not be able to handle the volume of undo records generated by the SQL apply process.
B: SQL apply operations that do full table scans can consume significant system resources, potentially leading to higher apply lag.
C: An increased number of bulk updates on the primary database may generate a large volume of redo data, which can cause apply lag if the logical standby cannot apply the changes quickly enough.
F: An undersized shared pool may affect the parsing and execution of SQL statements by SQL apply, which can contribute to the apply lag.
Option D is less likely to be a direct cause of SQL apply lag compared to bulk updates, as inserts generate new data rather than modifying existing data, which SQL apply can typically handle more efficiently.
Option E is incorrect because the size of the standby redo log files on the primary database impacts redo transport lag, not SQL apply lag.
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