oracle ons noserversavailable subscription time out

WebLogic Server Known and Resolved Issues - Oracle SEVERE: attempt to configure ONS in FanManager failed with oracle.ons.NoServersAvailable: Subscription time out <Apr 10, 2020 12:29:15 PM EDT> <Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Database Connection Fails With Oracle.ons.NoServersAvailable ... attempt to configure ONS in FanManager failed with oracle.ons.NoServersAvailable: Subscription time out Report The Oracle FAN functionality provides enhanced high availability allowing very fast detection of failures (see Oracle Administration and Deployment Guide, § 5.3.1 Overview of Oracle Integrated Clients and FAN ). Edit Driver Settings Select jdbc and click in "Download/Update" Click on jdbc Version column, change to 19.7.0.0 (mine was 12.2.0.1) and click Download, then OK Hope it helps. In this blog post, we will discuss how to connect Java a program using JDBC thin driver to Oracle Autonomous Database over TLS without a wallet. oracle.simplefan.impl.FanManager configure SEVERE: attempt to configure ONS in FanManager failed with oracle.ons.NoServersAvailable: Subscription time out To correct the problem, you must disable FAN, in one of two places: Through a system property at the domain, cluster, or server level. Cloud services health. 1. The cache manager then cleans up all invalid . The cache manager then cleans up all invalid connections. JDBC - Version 12.2.0.0.0 and later: Database Connection Fails With Oracle.ons.NoServersAvailable: Subscription Time Out From a WLS Datasource . Answers, support, and inspiration. Our Pega Application used in Customer Care is built on : - Pega 7.1.7 Pega Marketing 7.2 Pega NBAA 7.2 DATABASE: Oracle Database 12c Enterprise12.1.0.2.0 java lang illegalargumentexception ons configuration failed By the time an Oracle RAC service failure is propagated to the JDBC application, the database already rolls back the local transaction. If B is referenced directly in the code, it is available at compile time, i.e., A a = new B(); What does it mean by saying "not available at compile time"? 2019-11-15 14:07:51.154 ERROR 23436 --- [main] oracle.simplefan.FanManager: attempt to configure ONS in FanManager failed with oracle.ons.NoServersAvailable: Subscription time out Tôi không biết lý do tại sao tôi gặp lỗi này mặc dù kết nối cơ sở dữ liệu thành công và kết quả truy vấn là chính xác.

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