虽然这里讲的大部分知识以前都看过,但是时不时出现某些点让我如茅塞顿开: 以前经常会忘记一些细节,这篇文章可以更好的理解细节,巩固知识体系. Ownership qualifiers In Objective-C, ‘id’ or each object type is used for object variable types. Object types are pointer types of Objective-C classes, such as NSObject *. ‘id’ typ…
Automake是用来根据Makefile.am生成Makefile.in的工具 标准Makefile目标 'make all' Build programs, libraries, documentation, etc. (same as 'make'). 'make install' Install what needs to be installed, copying the files from the package's tree to system-wide directories.…
Configure a Pod to Use a PersistentVolume for Storage how to configure a Pod to use a PersistentVolumeClaim for storage. Here is a summary of the process: A cluster administrator creates a PersistentVolume that is backed by physical storage. The admi…
select event,count(1) from gv$session group by event order by 2;exec dbms_workload_repository.create_snapshot;select 'alter system kill session '''||sid||','||serial#||''';' from v$session where event='latch free'; SET LINESIZE 200SET NEWPAGE NONECOL…
原文:http://blog.csdn.net/fisher_jiang/article/details/6992588背景: 一次crash可能会造成虚拟机锁死的情况发生现象:点击take ownership 可能会提示如下字眼:Taking ownership of this virtual machine failed. The virtual machine is in use by an application on your host computer.解决办法:删除虚拟机目录下的所…
