SQLite porting to STM32 having issue with memory allocation

I am trying to port SQLite to uCOS RTOS running in STM324xG_EVAL board. I am using micrium File system for making RAM based file system used by SQLite. I have tried with different build configurations and used sqlite3_config API to define different memory regions like heap, scratch and page memory. I am able to initialize (sqlite3_initialize) and open(sqlite3_open) DB. But when I am trying to create tables(sqlite3_exec), I am getting errors like "journal file not found", "out of memory". What may be the issue

Thanks, Shijo Thomas