1.告警出现 查看相关时段的alert日志,发现了如下的错误: FatalNIconnecterror12170. VERSIONINFORMATION: TNSforLinux:Version11.2.0.4.0Production OracleBequeathNTProtocolAdapterforLinux:Version11.2.0.4.0Production TCP/IPNTProtocolAdapterforLinux:Version11.2.0.4.0Production Time:25-OCT-201705:00:12 Tracingnotturnedon. Tnserro...