DBUA fails with Error ‘ORA-12547: TNS:lost contact’
(Doc ID 2034896.1)
Last updated on NOVEMBER 13, 2022
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.2.0 and laterOracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Generic UNIX
Symptoms
DBUA fails with Error :”ORA-12547: TNS:lost contact”
trace.log shows that:
[main] [ 2015-06-17 07:53:24.369 MESZ ] [OracleHome.initOptionsStopOnError:1409] ORA-12547: TNS:lost contact
[main] [ 2015-06-17 07:53:24.369 MESZ ] [OracleHome.initOptionsStopOnError:1410] ORA-12547: TNS:lost contact
oracle.sysman.assistants.util.sqlEngine.SQLEngine.executeImpl(SQLEngine.java:1739)
oracle.sysman.assistants.util.sqlEngine.SQLEngine.connect(SQLEngine.java:987)
oracle.sysman.assistants.util.OracleHome.initOptionsStopOnError(OracleHome.java:1362)
oracle.sysman.assistants.dbma.backend.CompManager.obtainDatabaseInformation(CompManager.java:4118)
oracle.sysman.assistants.dbma.backend.SilentCompManager.startOperation(SilentCompManager.java:535)
oracle.sysman.assistants.dbma.Dbma.execute(Dbma.java:165)
oracle.sysman.assistants.dbma.Dbma.statusMain(Dbma.java:241)
oracle.sysman.assistants.dbma.Dbma.main(Dbma.java:225)
And When connected the database to be upgraded from the target ORACLE_HOME ,it fails with “ORA-12547: TNS:lost contact”
export ORACLE_SID=<SID to be Upgrade>
$ORACLE_HOME/bin/sqlplus / as sysdba
ERROR:
ORA-12547: TNS:lost contact
Cause
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Symptoms |
Cause |
Solution |
References |