Enabling and Disabling Direct NFS Client Control of NFS

By default, Direct NFS Client is installed in a disabled state with single-instance Oracle Database installations. Before enabling Direct NFS, you must configure an oranfstab file.

Use these procedures to enable or disable Direct NFS Client Oracle Disk Manager Control of NFS

Enabling Direct NFS Client Control of NFS

Change the directory to $ORACLE_HOME/rdbms/lib.
Enter the following command:
```
make -f ins_rdbms.mk dnfs_on
```

Disabling Direct NFS Client Control of NFS

Log in as the Oracle software installation owner, and disable Direct NFS Client using the following commands:
```
cd $ORACLE_HOME/rdbms/lib
make -f ins_rdbms.mk dnfs_off
```
Remove the oranfstab file.

Note:

If you remove an NFS path that an Oracle Database is using, then you must restart the database for the change to take effect.

Enabling Hybrid Columnar Compression on Direct NFS Client

Perform these steps to enable Hybrid Columnar Compression (HCC) on Direct NFS Client:

Ensure that SNMP is enabled on the ZFS storage server. For example:

$ snmpget -v1 -c public server_name .1.3.6.1.4.1.42.2.225.1.4.2.0
SNMPv2-SMI::enterprises.42.2.225.1.4.2.0 = STRING: "Sun Storage 7410"

If SNMP is enabled on an interface other than the NFS server, then configure oranfstab using the management parameter.
If SNMP is configured using a community string other than public, then configure oranfstab file using the community parameter.
Ensure that libnetsnmp.so is installed by checking if snmpget is available.