Feature Constraints

System catalogs, memory tables, global temporary tables, local temporary tables, and sequence tables are not supported.
This is valid only in ORA compatibility mode and PG mode.
The Ustore does not support encoding and decoding, and the compression ratio is less than 2:1.
When compression is enabled for ordinary tables, the space reserved for scale-out must be evaluated based on the size after decompression.
Hash bucket tables do not support DBE_HEAT_MAP.ROW_HEAT_MAP and DBE_COMPRESSION.GET_COMPRESSION_TYPE.
Compression scheduling is not supported during scale-out.
Before scale-out, check whether a compression task is being executed. If yes, wait until the compression task is complete, or run DBE_ILM.STOP_ILM or DBE_ILM_ADMIN.DISABLE_ILM to stop the compression task. After the scale-out is complete, run DBE_ILM_ADMIN.ENABLE_ILM to enable it.