ORA-02855

Error: ORA-02855: Number of requests is less than the number of slaves

Causa: The value given for DB_SLAVE_BUFFERS in your INIT.ORA file is less than the number specified for the number of slaves, DB_SLAVES.

Acción: Specify a number that is greater than that given for DB_SLAVES Alternatively, specify 0. The kernel will supply the appropriate number.