Krishna Sudagani (Oracle Application DBA, OCI Admin, and Middleware Expertise)

Over a decade of expertise as an Oracle DBA, Application DBA, OCI Admin, and Fusion Middleware specialist, I’ve solved complex challenges, optimized systems, and led innovations across diverse Oracle platforms. Now, I’m passionate about sharing insights to bridge the gap between theory and practice. From database optimization to middleware best practices, join me as we explore Oracle technologies and grow together. Stay tuned for expert tips and resources!

Monday, 7 November 2016

Ora-12547: tns:lost contact 12c

We are unable to access the jdbc url and sql developer after configuring E-Business suite R12.2.5

Error:

I/O Error: Connection Reset
ora-12547: tns:lost contact 12c

Fix:

Backup the sqlnet.ora file from both DB and Apps side and comment the below parameters.

#tcp.validnode_checking = yes
#tcp.invited_nodes=(hostname)

Krishna Sudagani (Oracle Application DBA, OCI Admin, and Middleware Expertise)

Monday, 7 November 2016

Ora-12547: tns:lost contact 12c

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