上周给自己的虚拟机11.2.0.4.5打.6的PSU没想到我在一个节点把之前opatch 备份的目录给删除了，结果就打不上补丁了。记住啊$GRID_HOME和$ORACLE_HOME下的.patch_storage目录可千万不能删除了，否则就无法打上补丁了。今天有时间，想折腾一下，查看了下，幸好2节点都没有 把目录删除，SCP过来，什么都没有修改，直接OPatch就成功了，特此纪念下。
要万一两个节点全删除了怎么办啊?官方给出了下面的方案：
- Restore complete .patch_storage directory from backed up ORACLE_HOME prior to the files missing .----还原
?
- Reinstall ORACLE_HOME .----重装ORACLE_HOME
- Clone the ORACLE_HOME from a identical environment .----找一个一模一样的环境克隆
好悲催，看来如果GRID_HOME和ORACLE_HOME在安装初期各给规划50G空间，真不算多。
我喜欢给每个节点手工打补丁，而不是opatch auto，可能是由于环境变量的问题，导致我使用opatch auto就没有成功过。
5 Manual Steps for Apply/Rollback Patch
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See My Oracle Support Document 1641136.1 for cases where opatch auto cannot be used.
Oracle Grid Infrastructure 11.2.0.4.x Patch Set Update SUPPLEMENTAL README (文档 ID 1641136.1)下面是我打补丁成功的截图：
[grid@elvis111 ~]$ opatch lsinv
Oracle Interim Patch Installer version 11.2.0.3.6
Copyright (c) 2013, Oracle Corporation. All rights reserved.
Oracle Home : /g01/grid/app/11.2.0/grid
Central Inventory : /g01/grid/app/oraInventory
from : /g01/grid/app/11.2.0/grid/oraInst.loc
OPatch version : 11.2.0.3.6
OUI version : 11.2.0.4.0
Log file location : /g01/grid/app/11.2.0/grid/cfgtoollogs/opatch/opatch2015-04-19_18-21-18PM_1.log
Lsinventory Output file location : /g01/grid/app/11.2.0/grid/cfgtoollogs/opatch/lsinv/lsinventory2015-04-19_18-21-18PM.txt
--------------------------------------------------------------------------------
Installed Top-level Products (1):
Oracle Grid Infrastructure 11g 11.2.0.4.0
There are 1 product(s) installed in this Oracle Home.
Interim patches (3) :
Patch 20420937 : applied on Sun Apr 19 14:36:44 CST 2015
Unique Patch ID: 18573450
Patch description: "OCW Patch set update : 11.2.0.4.6 (20420937)"
Created on 27 Mar 2015, 15:19:31 hrs PST8PDT
Bugs fixed:
18328800, 19270660, 18691572, 20365005, 17750548, 17387214, 17617807
14497275, 17733927, 18180541, 18962892, 17292250, 17378618, 16759171
17065496, 13991403, 17273020, 17155238, 18053580, 18261183, 17039197
16317771, 17947785, 10052729, 20340620, 18199185, 18399991, 18024089
20246071, 18414137, 17001914, 17927970, 14378120, 16346413, 15986647
18068871, 18143836, 16206997, 19168690, 20235511, 18343490, 16613232
19276791, 17722664, 12928658, 16249829, 18520351, 18226143, 18265482
18229842, 17172091, 17818075, 18231837, 14373486, 17483479, 18120545
18729166, 13843841, 17405302, 18709496, 18330979, 18187697, 14525998
20531190, 14385860, 19479503, 18348155, 18370031, 17516024, 17764053
17551223, 14671408, 14207615, 18272135, 17500165, 18875012, 19558324
18464784, 18848125, 19241857, 17955615, 14693336, 20315294, 16284825
20014326, 17352230, 17238586, 17089344, 17405605, 17531342, 17640316
17159489, 16543190, 18346135, 16281493, 17481314, 15986311, 17208793
18700935, 18999857, 14076173, 18428146, 17435488, 18352845, 18352846
17387779, 17391726, 20141091, 15832129, 17305100, 19885321, 16901346
17985714, 18536826, 17780903, 18752378, 18946768, 16875342, 16876500
19955755, 16429265, 18336452, 17273003, 17059927, 17046460, 18053631
16867761, 20235486, 15869775, 19642566, 17447588, 15920201
Patch 20299019 : applied on Sun Apr 19 14:30:46 CST 2015
Unique Patch ID: 18573450
Patch description: "ACFS Patch set update : 11.2.0.4.6 (20299019)"
Created on 27 Mar 2015, 15:26:30 hrs
Bugs fixed:
17510275, 17172303, 16318126, 19690653, 172030