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Database service monitoring
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- Is the Oracle database server available for servicing requests and what is the response time for a typical request?
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Session monitoring
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- How many users are accessing the Oracle database currently?
- Who are the active users?
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Query monitoring
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- What are the current top 10 SQL queries in terms of resource utilization?
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Transaction monitoring
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- What is the commit and rollback behavior of the applications using the Oracle database?
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Alert log monitoring
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- Have there been any recent errors/events in the Oracle alert log? What are they?
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Rollback segment monitoring
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- Is there heavy contention for the rollback segments?
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Lock and latch monitoring
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- Is there contention for locks?
- Is a specific application holding a lock for a long time? Which lock(s) are these?
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Cache monitoring
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- Are the library cache, dictionary cache, and the data buffer cache adequately sized?
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Full table scan monitoring
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- Is there any full table scan happening on the Oracle database server? If so, how frequently?
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Tablespace monitoring
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- Are any of the tablespaces reaching their storage capacity?
- Is the load adequately balanced across the tablespaces?
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Hot file monitoring
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- Is the disk I/O (read/write) being balanced across the datafiles or is there a particular hot datafile that is handling all the requests?
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Redo log monitoring
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- Is the Oracle redo-log buffer sufficiently sized, or is there a large number of requests waiting for redo log space?
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Object monitoring
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- Is there any invalid object in the database? Which ones?
- Which objects have been recently modified and when?
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