Determines whether the Log Transfer Interface component sends all columns in after images or only columns that were changed in an update operation in the after images.
true
true – The Log Transfer Interface sends only minimal column information (only changed columns in after images) in the generated LTL for update operations.
false – The Log Transfer Interface sends complete column information (all columns in after images) in the generated LTL for update operations.
When the column_compression parameter is set to false, the Log Transfer Interface sends complete before and after images in the generated LTL, even for columns in which no data changed as a result of an update operation.
When the column_compression parameter is set to true, the Log Transfer Interface sends LTL with only the columns that changed as a result of an update operation in after images. Columns in which no data changed as a result of the update operation are not sent in the after images.
In general, setting the value of the column_compression parameter to true provides better Replication Agent throughput.
