- After a you delete a large amount of data in a table and delta merge has been run successfully, the table size is still not decreased.
- You checked column RECORD_COUNT, RAW_RECORD_COUNT_IN_MAIN and RAW_RECORD_COUNT_IN_DELTA for your table in M_CS_TABLES
or you run HANA_Tables_ColumnStore_DeltaStorage attached in note 1969700 and get results for RECORDS, RECORDS_MAIN and RECORDS_DELTA.
You notice that although raw number of rows in delta storage is small, raw number of rows in main storage is much larger than number of rows.
- Not only table size in memory but also table size in disk are not decreased.
- HANA 1.0
- HANA 2.0
garbage collection, MVCC, force, compressed, LAST_MERGE_TIME, loaded, full, LAST_ESTIMATED_MEMORY_SIZE, ESTIMATED_MAX_MEMORY_SIZE_IN_TOTAL, MEMORY_SIZE_IN_MAIN, MEMORY_SIZE_IN_DELTA, MEMORY_SIZE_IN_TOTAL, FAQ , KBA , HAN-DB , SAP HANA Database , How To
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