How to fix ORA-12547 TNS lost contact when try to connect to Oracle
Issue / Oracle error
sqlplus scott/tiger
SQL*Plus: Release 10.2.0.5.0 - Production on Wed May 18 09:32:35 2011
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ERROR:
ORA-12547: TNS :lost contact when try to connect to Oracle.
Issue description
I saw that TNS connection issue along with ORA-12547 Oracle error several times, usually when trying to connect to Oracle database server on Unix / Linux host with an OS user that does not belong to oinstall group (Oracle binaries owner group). In this case, interesting enough that local TNS connection to database (when using tnsnames alias) works fine: Read more »
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