Ubuntu系统里如何正确卸载oracle-j2sdk1.6（图文详解）

　　问题来源

　　因为，我在安装clouder manager5.X的时候，默认是需要oracle-j2sdk1.7。

　　它4.X时，才是1.6的。

　　若你还是在用clouder manager4.X版本的话，需要用到oracle-j2sdk1.6

则，见

http://download.csdn.net/download/nma_123456/8976865

　　

　　

　　为此，需要卸载它，再来安装

bigdata@ubuntucmbigdata1:/var/log/cloudera-manager-installer$ dpkg --list | grep -i jdk
ii  oracle-j2sdk1.                                       1.6.+update31                                      amd64        Java(TM) JDK, Standard Edition, Oracle(TM)
bigdata@ubuntucmbigdata1:/var/log/cloudera-manager-installer$ sudo apt-get remove oracle-j2sdk1.
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following package was automatically installed and is no longer required:
  libstdc++
Use 'apt-get autoremove' to remove it.
The following packages will be REMOVED:
  oracle-j2sdk1.
 upgraded,  newly installed,  to remove and  not upgraded.
 not fully installed or removed.
After this operation,  MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ...  files and directories currently installed.)
Removing oracle-j2sdk1. (1.6.+update31) ...
Setting up cloudera-manager-server (5.11.-.cm5111.p0.~trusty-cm5) ...
chown: cannot access ‘/var/lib/cloudera-scm-server/’: No such file or directory
dpkg: error processing package cloudera-manager-server (--configure):
 subprocess installed post-installation script returned error exit status
Errors were encountered while processing:
 cloudera-manager-server
E: Sub-process /usr/bin/dpkg returned an error code ()
bigdata@ubuntucmbigdata1:/var/log/cloudera-manager-installer$ dpkg --list | grep -i jdk
bigdata@ubuntucmbigdata1:/var/log/cloudera-manager-installer$ 

　　解决办法

bigdata@ubuntucmbigdata3:/usr/java$ dpkg --list | grep -i jdk
ii  oracle-j2sdk1.                                       1.6.+update31                                      amd64        Java(TM) JDK, Standard Edition, Oracle(TM)
iF  oracle-java7-installer                                7u80+7u60arm-~webupd8~                            all          Oracle Java(TM) Development Kit (JDK)
iU  oracle-java7-set-default                              7u80+7u60arm-~webupd8~                            all          Set Oracle JDK  as default Java
bigdata@ubuntucmbigdata3:/usr/java$ sudo apt-get remove oracle-j2sdk1.
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libntdb1 libstdc++ python-ntdb
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  oracle-j2sdk1.
 upgraded,  newly installed,  to remove and  not upgraded.
 not fully installed or removed.
After this operation,  MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ...  files and directories currently installed.)
Removing oracle-j2sdk1. (1.6.+update31) ...
Setting up oracle-java7-installer (7u80+7u60arm-~webupd8~) ...
Downloading Oracle Java ...
---- ::--  http://download.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz
Resolving download.oracle.com (download.oracle.com)... 23.2.16.218, 23.2.16.208
Connecting to download.oracle.com (download.oracle.com)|23.2.16.218|:... connected.
HTTP request sent, awaiting response...  Moved Temporarily
Location: https://edelivery.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz [following]
---- ::--  https://edelivery.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz
Resolving edelivery.oracle.com (edelivery.oracle.com)... 184.28.37.127, :4f00::::2d3e, :4f00::::2d3e
Connecting to edelivery.oracle.com (edelivery.oracle.com)|184.28.37.127|:... connected.
HTTP request sent, awaiting response...  Moved Temporarily
Location: http://download.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz?AuthParam=1498453415_f4abdac1cfd99129c88b2f3935796ed1 [following]
---- ::--  http://download.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz?AuthParam=1498453415_f4abdac1cfd99129c88b2f3935796ed1
Connecting to download.oracle.com (download.oracle.com)|23.2.16.218|:... connected.
HTTP request sent, awaiting response...  Not Found
-- :: ERROR : Not Found.

download failed
Oracle JDK  is NOT installed.
dpkg: error processing package oracle-java7-installer (--configure):
 subprocess installed post-installation script returned error exit status
dpkg: dependency problems prevent configuration of oracle-java7-set-default:
 oracle-java7-set-default depends on oracle-java7-installer; however:
  Package oracle-java7-installer is not configured yet.

dpkg: error processing package oracle-java7-set-default (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
 oracle-java7-installer
 oracle-java7-set-default
E: Sub-process /usr/bin/dpkg returned an error code ()
bigdata@ubuntucmbigdata3:/usr/java$ dpkg --list | grep -i jdk
iF  oracle-java7-installer                                7u80+7u60arm-~webupd8~                            all          Oracle Java(TM) Development Kit (JDK)
iU  oracle-java7-set-default                              7u80+7u60arm-~webupd8~                            all          Set Oracle JDK  as default Java
bigdata@ubuntucmbigdata3:/usr/java$ 

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