One end is missing the scp-related packet source
[oracle@rac1 dump_dir]$ scp /mnt/dump_dir/expdp_orders_2tabs2* 192.168.X.247:/home/oracle/dump_dir
[email protected]’s password:
bash: scp: command not found
Objectives
[root@localhost ~]# -bash: scp: command not found
-bash: -bash:: command not found

[root@localhost ~]# yum install openssh-clients
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.cn99.com
* updates: mirrors.aliyun.com
Setting up Install Process
Resolving Dependencies
–> Running transaction check
—> Package openssh-clients.x86_64 0:5.3p1-123.el6_9 will be installed
–> Processing Dependency: openssh = 5.3p1-123.el6_9 for package: openssh-clients-5.3p1-123.el6_9.x86_64
–> Processing Dependency: libcrypto.so.10(libcrypto.so.10)(64bit) for package: openssh-clients-5.3p1-123.el6_9.x86_64
–> Processing Dependency: libcrypto.so.10(OPENSSL_1.0.1_EC)(64bit) for package: openssh-clients-5.3p1-123.el6_9.x86_64
–> Processing Dependency: libcrypto.so.10(OPENSSL_1.0.1)(64bit) for package: openssh-clients-5.3p1-123.el6_9.x86_64
–> Processing Dependency: libedit.so.0()(64bit) for package: openssh-clients-5.3p1-123.el6_9.x86_64
–> Running transaction check
—> Package libedit.x86_64 0:2.11-4.20080712cvs.1.el6 will be installed
—> Package openssh.x86_64 0:5.3p1-70.el6 will be updated
–> Processing Dependency: openssh = 5.3p1-70.el6 for package: openssh-server-5.3p1-70.el6.x86_64
—> Package openssh.x86_64 0:5.3p1-123.el6_9 will be an update
—> Package openssl.x86_64 0:1.0.0-20.el6 will be updated
—> Package openssl.x86_64 0:1.0.1e-57.el6 will be an update
–> Running transaction check
—> Package openssh-server.x86_64 0:5.3p1-70.el6 will be updated
—> Package openssh-server.x86_64 0:5.3p1-123.el6_9 will be an update
–> Finished Dependency Resolution

Dependencies Resolved

================================================================================================================================================================================================================
Package Arch Version Repository Size
================================================================================================================================================================================================================
Installing:
openssh-clients x86_64 5.3p1-123.el6_9 base 444 k
Installing for dependencies:
libedit x86_64 2.11-4.20080712cvs.1.el6 base 74 k
Updating for dependencies:
openssh x86_64 5.3p1-123.el6_9 base 277 k
openssh-server x86_64 5.3p1-123.el6_9 base 329 k
openssl x86_64 1.0.1e-57.el6 base 1.5 M

Transaction Summary
================================================================================================================================================================================================================
Install 2 Package(s)
Upgrade 3 Package(s)

Total download size: 2.6 M
Is this ok [y/N]: Y
Downloading Packages:
(1/5): libedit-2.11-4.20080712cvs.1.el6.x86_64.rpm | 74 kB 00:00
(2/5): openssh-5.3p1-123.el6_9.x86_64.rpm | 277 kB 00:00
(3/5): openssh-clients-5.3p1-123.el6_9.x86_64.rpm | 444 kB 00:00
(4/5): openssh-server-5.3p1-123.el6_9.x86_64.rpm | 329 kB 00:00
(5/5): openssl-1.0.1e-57.el6.x86_64.rpm | 1.5 MB 00:00
—————————————————————————————————————————————————————————————————————-
Total 363 kB/s | 2.6 MB 00:07
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Updating : openssl-1.0.1e-57.el6.x86_64 1/8
Updating : openssh-5.3p1-123.el6_9.x86_64 2/8
Installing : libedit-2.11-4.20080712cvs.1.el6.x86_64 3/8
Installing : openssh-clients-5.3p1-123.el6_9.x86_64 4/8
Updating : openssh-server-5.3p1-123.el6_9.x86_64 5/8
Cleanup : openssh-server-5.3p1-70.el6.x86_64 6/8
Cleanup : openssh-5.3p1-70.el6.x86_64 7/8
Cleanup : openssl-1.0.0-20.el6.x86_64 8/8

Installed:
openssh-clients.x86_64 0:5.3p1-123.el6_9

Dependency Installed:
libedit.x86_64 0:2.11-4.20080712cvs.1.el6

Dependency Updated:
openssh.x86_64 0:5.3p1-123.el6_9 openssh-server.x86_64 0:5.3p1-123.el6_9 openssl.x86_64 0:1.0.1e-57.el6

Complete!

Once the installation is complete, it’s OK!