How to fix the Oracle error ORA-02855: Number of requests is less than the number of slaves?

In this post, you’ll learn more about the Oracle ErrorORA-02855: Number of requests is less than the number of slaves with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

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

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

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.”

How to fix the Error ORA-02855: Number of requests is less than the number of slaves ?

You can fix this error in Oracle by following the below steps

Specify a number that is greater than that given for “db_slaves” Alternatively, specify 0. The kernel will supply the appropriate number.