在Centos上安装oracle时出现事务检查错误

我试图在centos 7.5上使用以下命令安装oracle

sudo yum install oracle-database-server-12cR2-preinstall -y

但是，我得到以下错误

Transaction check error:
  file /usr/lib/systemd/system-preset/90-default.preset from install of redhat-release-server-1:7.6-4.0.1.el7.x86_64 conflicts with file from package centos-release-7-5.1804.4.el7.centos.x86_64
  file /etc/os-release from install of oraclelinux-release-7:7.6-1.0.15.el7.x86_64 conflicts with file from package centos-release-7-5.1804.4.el7.centos.x86_64
  file /etc/redhat-release from install of oraclelinux-release-7:7.6-1.0.15.el7.x86_64 conflicts with file from package centos-release-7-5.1804.4.el7.centos.x86_64
  file /etc/rpm/macros.dist from install of oraclelinux-release-7:7.6-1.0.15.el7.x86_64 conflicts with file from package centos-release-7-5.1804.4.el7.centos.x86_64
  file /etc/system-release from install of oraclelinux-release-7:7.6-1.0.15.el7.x86_64 conflicts with file from package centos-release-7-5.1804.4.el7.centos.x86_64
  file /etc/system-release-cpe from install of oraclelinux-release-7:7.6-1.0.15.el7.x86_64 conflicts with file from package centos-release-7-5.1804.4.el7.centos.x86_64

Error Summary
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有人能帮我吗

谢谢 舒亚