ORA-01988: remote os logon is not allowed


You can get ” ORA-01988: remote os logon is not allowed ” error during the drop any user.


Details of error are as follows.

ORA-01988: remote os logon is not allowed

Cause: Remote os login attempted when not allowed.
Action: Use a local client, or use the remote_os_authent system parameter to turn on remote os logon.


To solve this error, You should enable the remote_os_authent parameter as follows.

SQL> show parameter remote_os_authent

------------------------------------ ----------- ------------------------------
remote_os_authent boolean FALSE

SQL> alter system set remote_os_authent=true scope=spfile sid='*';


Do you want to learn Oracle Database for Beginners, 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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