Increasing DB_HEAP_SZ

Hi,

I want to increase database size to handle big service and characteristic size. I have tried changing DB_HEAP_SZ in advanced config header and scatter config header,
however it still doesn't change in .map file. I increased DB_HEAP_SIZE to 2590, and DB_HEAP_SZ to 2578. However when I see .map file, it doesn't reflect that change:

Load Region LR_RETENTION_RAM2 (Base: 0x00080768, Size: 0x00000000, Max: 0x00002898, ABSOLUTE)

Execution Region ZI_RET20 (Base: 0x00080768, Size: 0x00000a8c, Max: 0x000022b8, ABSOLUTE, UNINIT)

Base Addr Size Type Attr Idx E Section Name Object

0x00080768 0x0000040c Zero RW 516 heap_db_area jump_table.o
0x00080b74 0x00000154 Zero RW 517 heap_env_area jump_table.o
0x00080cc8 0x0000052c Zero RW 519 heap_msg_area jump_table.o

Am I doing it wrong?

Thanks