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When run Oracle DB 19.3.0 dbca， encounter the following error. java.lang.NullPointerException

in Database Install/Upgrade/Opatch (MOSC) 2 comments

[main] [ 2021-02-09 04:26:45.788 GMT ] [OracleHome.getVersion:1200] Current version from sqlplus: null

SEVERE: Feb 09, 2021 4:26:45 AM oracle.install.commons.util.exception.AbstractErrorAdvisor getDetailedMessage

SEVERE: [FATAL] java.lang.NullPointerException

java.lang.NullPointerException

at oracle.net.ca.cx.common.NetCAUtils.compareVersion(NetCAUtils.java:189)

at oracle.net.ca.cx.common.NetCAUtils.isV1HigherThanV2(NetCAUtils.java:213)

at oracle.net.ca.cx.common.NetCAUtils.isVersion112orHigher(NetCAUtils.java:228)

at oracle.net.ca.cx.backend.NetConfigFactory.findHomeType(NetConfigFactory.java:216)

at oracle.net.ca.cx.backend.NetConfigFactory.getNetConfig(NetConfigFactory.java:115)

at oracle.net.ca.cx.GetListenerInfo.getAllListeners(GetListenerInfo.java:116)

at oracle.net.ca.cx.GetListenerInfo.getAllListeners(GetListenerInfo.java:99)

at oracle.sysman.assistants.util.step.StepContext.<init>(StepContext.java:408)

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