TNS-12535

How to Resolve ORA-12535: TNS:operation timed out

by Ed Chen
February 11, 2019February 13, 2023

ORA-12535 and TNS-12535 ORA-12535 is the same as TNS-12535, they all indicate that the connection between the client and the listener has been timed out.… Read More »

TNSPING, How and Why

by Ed Chen
July 22, 2014December 11, 2022

TNSPING Utility tnsping is a network testing utility provides by Oracle to test the availability of listener through the substrate of Oracle Net. Somebody may… Read More »

How to Resolve ORA-3136 Inbound Connection Timed Out

by Ed Chen
October 11, 2012February 7, 2023
2 Comments

ORA-3136 At times, some users complained about connection timeout, and you saw error messages ORA-3136 in sqlnet.log as such: Fatal NI connect error 12170. … Read More »