Changing your Python version with Anaconda ( Installing Anaconda Python )

Checking the current python version

Installing Anaconda Python:

Searching for available python modules in anaconda

Installing python using conda

Type y to continue installation

Installation completed .

Now check for the updated python version

Installing Anaconda On Linux

Downloading software:

cd /opt

wget http://repo.continuum.io/archive/Anaconda3-4.0.0-Linux-x86_64.sh

Installing Anaconda:

Run the below command to install Anaconda

bash Anaconda3-4.0.0-Linux-x86_64.sh

Press Enter to continue the installation

Type yes to accept licence agreement

Provide the location for anaconda installation

Installation completed successfully

Testing Anaconda installation

yarn application and listing commands

We can do that via yarn application -list command.

Listing yarn applications:

From web ui 

This will give you list of all SUBMITTED, ACCEPTED or RUNNING applications.

From this you can filter applications of default queue by running yarn application -list | grep default

From terminal

Killing yarn application

To kill the application you can run yarn application -kill <Application ID>

Resolution for the error (ERROR: java.io.IOException: Table Namespace Manager not fully initialized, try again later)

In Hbase shell when try to create a table getting the below error:

To resolve this error one of the solution is to clean the Hbase related data from zookeeper and hdfs.

Steps for cleaning HBase related data from zookeeper and hdfs

While cleaning if we get the below error

WatchedEvent state:SyncConnected type:None path:null Node does not exist: /HBase-unsecure

Create the node by connecting to zookeeper

Again run the Hbase clear command

Now try to create table in Hbase shell again

Table created successfully

Check for the table in Hbase master UI

Oracle database RMAN and archive logs

Starting rman

Connecting to the target database:

Archivelog List:

Delete archive logs

Enter yes to delete 

Failure -Test failed: ORA-00257: archive error. Connect internal only, until freed

Check the status of the archive log

Check the database archive log destination

It is showing archive log space is full

Remove some archive log files

If we get limit exceed error, increase the archive log size as below

ALTER SYSTEM SET DB_RECOVERY_FILE_DEST_SIZE=20048576000 SCOPE=BOTH;

Restart the database

How to kill forcefully running oracle database process in linux

Connect to server through putty and issue the below command

ps -ef |grep pmon

Now kill the port running the process ora_pmon_orcl as below