Another app is currently holding the yum lock; waiting for it to exit... 怎么解决

在使用yum安装时出现相似以下状况：app [root@sjk1 ~]# yum -y install perl-DBD-MySQL Loaded plugins: fastestmirror, langpacks Existing lock /var/run/yum.pid: another copy is running as pid 2235. Another app is currentl

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