Contains the table’s compression history. Enable the enable monitoring and per object statistics active configuration parameters for this monitoring table to collect data.
The columns for monTableCompression are:
Name |
Datatype |
Attributes |
Description |
---|---|---|---|
InstanceID |
int |
(Cluster Edition only) Server instance ID |
|
DBID |
int |
ID of the database to which this table was transferred |
|
TableID |
int |
Table ID of the compressed table |
|
PartitionID |
int |
ID of the compressed partition |
|
TableName |
varchar |
statnull |
Name of the compressed table |
CompRowInserted |
int |
Counter, monitor |
Number of compressed rows inserted |
CompRowUpdated |
int |
Counter, monitor |
Number of updated compressed rows |
CompRowForward |
int |
Counter, monitor |
Number of compressed rows forwarded from the update |
CompRowScan |
int |
Counter, monitor |
Number of compressed rows accessed |
RowPageDecompressed |
int |
Number of page-compressed rows decompressed to be row-compressed |
|
RowDecompressed |
int |
Counter, monitor |
Number of rows decompressed |
ColDecompressed |
int |
Counter, monitor |
Number of columns decompressed |
RowCompNoneed |
int |
Counter, statnull |
Number of rows not compressed because their compressed row length exceeded their normal row length |
PageCompNoneed |
int |
Counter, statnull |
Number of pages that are not suitable for page-level compression because Adaptive Server cannot generate a dictionary or index |
PagesCompressed |
int |
Counter, monitor |
Number of pages compressed at the page-level |
BytesSavedPageLevel |
int |
Counter, monitor |
Number of bytes page level compression saved |