ORA-12529: TNS:connect request rejected based on current filtering rules


Sometimes You can get “ORA-12529: TNS:connect request rejected based on current filtering rules ” error.


Details of error are as follows.

ORA-12529: TNS:connect request rejected based on current filtering rules
Cause: Connection Manager and its listener were configured with filtering rules specifying that the connect request be rejected.
Action: If this connect request should be allowed, then contact the administrator to modify the filtering rules.



To solve this error, you can create a static listener and start it as follows.

Add the following listener descriptions to the listener.ora file under $ORACLE_HOME/network/admin.

alter system set LOCAL_LISTENER="(address=(host=hostname.domain.com)(port=1521)(protocol=tcp))" scope=both sid='*';


Check your Hostname, Port, DB Name and fill them correctly.


(ORACLE_HOME = /u01/app/db_home_18c )

[oracle@msdbadm01 ~]$ lsnrctl start LISTENER


Or Restart database and listener.

LSNRCTL> start

SQL> shutdown immediate
SQL> startup


1. Unset or Remove the TNS_ADMIN parameter at OS Level.


Set the TNS_ADMIN value to the location where Client Credentials file (.zip) is located.


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



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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