今天在给开发的测试环境安装开发Oracle数据库打Patch时报错：

[oracle@xxy01 24006111]$ opatch apply

Oracle Interim Patch Installer version 11.2.0.3.12

Copyright (c) 2017, Oracle Corporation.  All rights reserved.

Oracle Home       : /u01/app/oracle/product/11.2.0/db_1

Central Inventory : /u01/app/oraInventory

   from           : /u01/app/oracle/product/11.2.0/db_1/oraInst.loc

OPatch version    : 11.2.0.3.12

OUI version       : 11.2.0.4.0

Log file location : /u01/app/oracle/product/11.2.0/db_1/cfgtoollogs/opatch/opatch3017-03-13_09-36-47AM_1.log

Verifying environment and performing prerequisite checks...

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

Prerequisite check "CheckSystemCommandAvailable" failed.

The details are:

Missing command :fuser

UtilSession failed: 

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Prerequisite check "CheckSystemCommandAvailable" failed.

Log file location: /u01/app/oracle/product/11.2.0/db_1/cfgtoollogs/opatch/opatch3017-03-13_09-36-47AM_1.log

使用find在服务器上查找fuser命令，没有找到，使用yum search fuser查找相关包

[root@xxy01 24006111]$# yum search fuser

Loaded plugins: product-id, security, subscription-manager

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

rhel                                                                                                                                                                                       | 4.1 kB     00:00 ... 

================================================================================================= Matched: fuser =================================================================================================

psmisc.x86_64 : Utilities for managing processes on your system

使用yum install -y psmisc 安装包

再打Patch包就没有问题了