Abap Programing error -> Runtime Errors DBIF_RSQL_INVALID_RSQL

Dear All,

We are getting Abap dump error when we executing FI t-code like BL3N and MM t-code ME51n or saving any document in FI and PP also.

Error details below:

Category ABAP Programming Error

Runtime Errors DBIF_RSQL_INVALID_RSQL

ABAP Program SAPLPA_SWITCH_EXTENSIONS

Application Component BC-DWB-TOO-PAK

Date and Time 07.11.2020 18:33:08

Short Text Error in module RSQL of the database interface

What happened? No DBCON entry exists for the specified secondary database connection. Error in the ABAP Application Program The current ABAP program "SAPLPA_SWITCH_EXTENSIONS" had to be terminated because it has come across a statement that unfortunately cannot be executed.

I am attaching the error snapshot as well.

Please guide us regarding this issue.