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ORACLE ERROR

Database ERRORS

ORA-12520: TNS listener could not find available handler for requested type of server

Cause: None of the known and available service handlers for requested type of server (dedicated or shared) are appropriate for the client connection. Action: Run “lsnrctl services” to ensure that the instance(s) have registered with the listener and that the appropriate handlers are accepting connections. TNS listener could not find available handler Read more…

By Ahmad, 1 year1 year ago
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Riaz Ahmad Ansari is an Oracle Consultant, Speaker, Blogger, YouTuber & Mentor.

He is famous for Ahmad’s nickname in the IT industry.

He has many years of experience as a production Oracle DBA managing all operating system based Oracle Databases.

He started working with Oracle Database starting from Oracle 9i to 10g/11g/12c18c/19c.

He has hands-on experience in real-world Production environments.

He is skilled with Oracle technologies such as Core DBA work, Data Guard, RMAN, Backup & Recovery, RAC, Cloud Control, and Performance Tuning.

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    ahmad@oracleride.com
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