ORA-12569: TNS packet checksum failure


Sometimes You can get “ORA-12569: TNS:packet checksum failure ” error.


Details of error are as follows.

ORA-12569: TNS:packet checksum failure
Cause: The data received is not the same as the data sent.
Action: Attempt the transaction again. If the error is persistent, turn on tracing and reexecute the operation.



This error may be related with the Firewall settings.

Change the firewall so that features that would change / alter a packet such as Deep Packet Inspection (DPI), are not enabled.



Do you want to learn more details about RMAN, then read the following articles.



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About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.

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