Parameter

1-Show Parameter setting
2-Default location of Password file in Linux
3-Default location of Password file in Window

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1-Show Parameter setting
sql> show Parameters;

2-Default location of Password file in Linux
 $ORACLE_HOME/dbs/orapw$ORACLE_SID

3-Default location of Password file in Window
ORACLE_HOME%\database\PWD%ORACLE_SID%.ora