4.321 DBA_HIST_DB_CACHE_ADVICE
DBA_HIST_DB_CACHE_ADVICE
displays historical predictions of the number of physical reads for the cache size corresponding to each row.
This view contains snapshots of V$DB_CACHE_ADVICE
.
Column | Datatype | NULL | Description |
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Unique snapshot ID |
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Database ID for the snapshot |
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Instance number for the snapshot |
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Buffer Pool identifier (ranges from 1 to 8) |
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Cache size for prediction (in terms of buffers) |
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Buffer pool name |
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Block size in bytes for buffers in the pool (the standard block size, the power of 2 nonstandard block sizes, 2048, 4096, 8192, 16384, or 32768) |
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Status of the advisory:
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Cache size for prediction (in megabytes) |
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Size factor with respect to the current cache size |
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Physical reads for the cache size |
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Base physical reads for the cache size |
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Actual physical reads for the cache size |
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Estimated physical read time for the cache size |
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The database ID of the PDB for the sampled session |
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The ID of the container that
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See Also: