TNS-12537

How to Build Asymmetric Standby Database for Data Guard

by Ed Chen
July 14, 2019February 13, 2023
4 Comments

Asymmetric Data Guard Usually we build data guard environments with the symmetric architecture design on primary and standby servers, that is, single-instance to single-instance or… Read More »

How to Resolve ORA-12537:TNS:connection closed

by Ed Chen
November 8, 2012December 11, 2022
6 Comments

ORA-12537 Overview There're several possible causes to raise ORA-12537: Incorrect File Permission White or Black List ORA-12537 Caused by Incorrect File Permission Incorrect file permission… Read More »