I have worked in solr local mode. Now Iam trying to import my tables in oracle database to collection created in solrcloud.How to achieve this?
I surfed a lot but no documents helped much.I want a clear idea of how to index daatabase tables into solrcloud.
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I've been researching and looking for ideas but the only thing close to a solution i've found has been where someone used pyspark to convert an oracle table into hdfs and then from hdfs into cassandra but I was hoping there was another/a clear solution to this data migration.
Title suggests that it is Cassandra > Oracle. Message text says Oracle > HDFS > Cassandra (i.e. the opposite direction). What exactly are you trying to do?
Suppose it is the title that is correct. If there's no tool which would do the migration for you, from my - developer's - point of view, creating a database link in my Oracle schema which points to Cassandra might be a good option. Then I'd just write some SQL code to migrate data I need. Here's how: Access Cassandra Data as a Remote Oracle Database.
Shortly:
connect to Cassandra as an ODBC data source
set connection properties for compatibility with Oracle
configure the ODBC gateway, Oracle Net and Oracle database
write queries
I have started working with mysql earlier, where different database meant completely different database, and I can create delete databases.
but when I started to working with oracle, the structure really confused me, the 'database' term means the same in Oracle as Mysql? If not whats the difference?
Thanks!
Oracle doc explain the difference (and migration tips):
2.2.5.1 Databases
When migrating MySQL databases to Oracle, SQL Developer maps each MySQL database to a tablespace in Oracle. Database objects, such as tables, indexes and views are stored in the respective tablespaces and are referenced from the Oracle schema for the user that owns them.
I have imported users in liferay(configured with oracle database) using OpenDJ, there are users in oracle database and also displayed on Liferay but when I tried to delete the users from liferay its not deleting it from oracle database.I don't understand the problem. Any Help will be appreciated.
I have an Oracle view containing very large amount of data in it and I want to migrate this data in a table in Greenplum database. Is there any way I can write any query in Postgresql to fetch that Oracle view's data?
If not possible by query in Postgresql, kindly suggest me some way to access Oracle view from Linux server, so that I can create data file from that Oracle view to my Linux server and load that file via gpfdist to a Greenplum table.
NOTE: an Oracle view is from third party, I only have an access to view that data (I have all the connection info) I can access that view via SQL Developer
NOTE: Exporting data from SQL Developer to my local machine is not feasible here as the data is very large
Thanks,
Sunny
The last time I used Greenplum (3 years ago) I don't think there were any untrusted languages like plperlu, so fetching directly from Oracle from within Greenplum might not be possible. If the data has a primary key, are you able to fetch in batches, compress it, then ship it to Greenplum?
Do you have a Greenplum support contract? If so, you could also try them if you haven't already: https://sso.emc.com/sso/login.htm
I recall that gpfdist can be configured to fetch from remote servers with a bit of fiddling, so if you are able to copy out the Oracle data to disk, you could fetch it using gpfdist without any intermediary steps.
After creating a Oracle Instance on Amazon RDS I'm trying to import data by following the instructions here for Oracle SQL Developer - Database Copy:
http://aws.amazon.com/articles/Amazon-RDS/4173109646282306
My DB size is approximately 50GBs. It was running fine and I could see the DDL progress, data migration, etc but now it seems like it's stuck on a table that has approximately 350k records. My questions are:
For anyone that has tried DB Copy to Amazon RDS for Oracle, how big is your DB and how long did it take?
Is it safe to kill SQL Developer and restart the process?
Any advice is greatly appreciated!