UTL_FILE_DIR in 18C

How do we do this in 18c as we did not saw this parameter?
Set UTL_FILE_DIR

Desupport of UTL_FILE_DIR Initialization Parameter:

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Starting in Oracle Database 18c, the UTL_FILE_DIR parameter is no longer supported. Instead, specify the name of a directory object.

The UTL_FILE_DIR initialization parameter is no longer listed in V$SYSTEM_PARAMETER and related views. If you attempt to set this parameter, then the attempt fails. If you attempt to specify an operating system file directly by using the LOCATION parameter of UTL_FILE.FOPEN, or by using the LOCATION parameter of FOPEN_NCHAR, then those attempts also fail. Specify the name of a directory object instead.

The security model for the use of a directory object for UTL_FILE and other Oracle Database subsystems is secure, because there is a clear privilege model. However, the use of an explicit operating system directory is insecure, because there is no associated privilege model. The notice of deprecation for the UTL_FILE_DIR initialization parameter was given in Oracle Database 12c Release 2 (12.2). With Oracle Database 18c, the parameter is now desupported.

Reference:
https://docs.oracle.com/en/database/oracle/oracle-database/18/upgrd/initialization-parameter-changes-oracle-database-18c.html#GUID-C03F4062-9AB6-4FFE-8CF8-28F8AF014783
 

SOLUTION

Desupport of UTL_FILE_DIR Initialization Parameter

Starting in Oracle Database 18c, the UTL_FILE_DIR parameter is no longer supported. Instead, specify the name of a directory object.

The UTL_FILE_DIR initialization parameter is no longer listed in V$SYSTEM_PARAMETER and related views. If you attempt to set this parameter, then the attempt fails. If you attempt to specify an operating system file directly by using the LOCATION parameter of UTL_FILE.FOPEN, or by using the LOCATION parameter of FOPEN_NCHAR, then those attempts also fail. Specify the name of a directory object instead.

The security model for the use of a directory object for UTL_FILE and other Oracle Database subsystems is secure, because there is a clear privilege model. However, the use of an explicit operating system directory is insecure, because there is no associated privilege model. The notice of deprecation for the UTL_FILE_DIR initialization parameter was given in Oracle Database 12c Release 2 (12.2). With Oracle Database 18c, the parameter is now desupported.

Reference:
https://docs.oracle.com/en/database/oracle/oracle-database/18/upgrd/initialization-parameter-changes-oracle-database-18c.html#GUID-C03F4062-9AB6-4FFE-8CF8-28F8AF014783