I am learning oracle myself with help of internet...
Now, for some scenario I need thousands of records which should be available in my table.
It is not possible to create thousands of records manually...
Is there any tools or any other way to do the same in ORACLE 10g...
As I said I am a novice to Oracle I need some advices from you SOF professionals....
Thanks in advance...
This database has a JDBC driver. Download Eclipse, add this driver to the path and write ten lines of code to insert as much blabla as required, here tutorial. Even if you have never programmed Java before and would not try again, easy enough to do.
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Let me start by saying, what I know about Pentaho wouldn't fill up a single paragraph. I'm more knowledgeable about PostgreSQL. I'm working with some contractors that are building a set of monthly reports in Pentaho (v. 4.5) for my company. Some of the data needs to go through a ETL process and get rolled up for reporting purposes. From a dba(ish) point of view, I would like to move these tables into a separate PostgreSQL schema.
I know that Pentaho is often times used with MySQL (which doesn't have schemas) and I'm concerned this might cause problems. I've done some "googlin'" and I don't turn up a lot of hits on the topic, but I did find a closed bug from a few years ago - thus implying that the functionality should be supported.
before I do this, I would like to see if anyone knows of a reason this will fail or be a bad idea. (or if you've done it an it works great, please let me know that, too).
Final notes: I'm using PostgreSQL 9.1.5, and I don't have access to a Pentaho instance to even test this myself. And I'm hoping the good folks in the Stackoverflow community will share their expertise and save me from having to install one and the hours of playing/testing to get an idea of this is a bad idea.
EDIT:
I sort of knew this question was a bit vague, but I was hoping that some one would read it and share any experience they have. So, Let me spell it out more clearly and ask more explicit questions.
I have not done anything. I don't know Pentaho. I don't want to learn Pentaho (not that there is anything wrong with Pentaho... It's just not where my interests are right now). My company hired contractors (I did not hire them). They have experience with Pentaho, but with MySQL. They don't really know anything about PostgreSQL. There are some important difference between PostgreSQL and MySQL. Including the fact that PostgreSQL supports schemas (whereas MySQL uses separate database... similar in concept be behave differently in some ways). Some ORMs (and tools) don't really like this... for example, the Django framework still doesn't really fully support schemas in Postgresql (I know this because I use Python and Django often and my life is much better when I keep things in the "public" schema). Because of my experience with Django and PostgreSQL schemas, I'm a bit leery of moving this data to a new schema.
I do understand that where ever the tables are, they will need permissions to be able to access the data.
My explicit questions:
Do you use Pentaho to access a PostgreSQL database to access tables in schemas other than "public" (the default).
If so, does it just work (no problems)?
If you had problems, would you please be willing to share with me (and the Stackoverflow community) any online resources that helped you? Or would you be willing to detail what you remember here?
Do you know of anything that just won't work correctly? For example, an open bug in Pentaho related to this topic.
Again, it's not your standard kind of question. I'm hoping that someone out there has experience and is willing to share it here and save me from having to spend time setting up a new Pentaho instance and trying to learn Pentaho well enough to test it, etc.
Thanks.
Two paths you can take:
1) What previous post said ("Pentaho steps (table inputs, outputs, etc.) usually allow you to specify a database schema.")
2) In database connection, advanced tab, "The preferred schema name".
If you're working with different schemas, you can create one database connection per schema. With this approach you can leave schema field in input/output steps empty.
We use MS SQL server and I can tell you that Pentaho does struggle with the idea of a schema. Many of their apps allow you to select a schema but Pentaho, like you said, is built to use something like mySQL.
Make you pentaho database user work like it would be working in mySQL.
We made the database user default to dbo then we structured our tables like dbo.dimDimension,
dbo.factFactTable etc. Basically, only use dbo for Pentaho purposes. (Or whatever schema you want to default to.)
I use PDI and PgSQL extensively every day with a bunch of different schemas. It works fine. The only trouble you might run into is Pg's troublesome practice of forcing unquoted identifiers to lower instead of upper case. I soon realized everything was easier when I set the Advanced connection property to "Quote all in database".
Yes, you have to quote everything when you type SQL if PDI doesn't do it for you, but it works quite well. Haven't experimented with forcing all identifiers to lower case, but I expect that would work as well.
And yes, use the "Preferred schema nanme" as well, but be aware that some steps use that option and others don't. You can't, for example, expect it to add schema names to SQL you type into a Table Input step.
The only other issues you might run into are the limits of Pg's JDBC driver. It's not as good as SQL Server's or DB2's, but the only thing I've every had trouble with was sending error rows from a Table Output step to another step when the Table Output step was in batch mode.
Have fun learning PDI. It makes a great complement to your DBA skills.
Brian
Pentaho steps (table inputs, outputs, etc.) usually allow you to specify a database schema.
I did a quick test using PDI and our 8.4 Postgres instance and was able to explore, read from and write to tables in different schemas.
So, I think this is a reasonable direction. Hope this helps.
Dear all ,
Can any one suggest me the postgres tool for linux which is used to find the
difference between the 2 given database
I tried with the apgdiff 2.3 but it gives the difference in terms of schema not the data
but I need both !
Thanks in advance !
Comparing data is not easy especially if your database is huge. I created Python program that can dump PostgreSQL data schema to file that can be easily compared via 3rd party diff programm: http://code.activestate.com/recipes/576557-dump-postgresql-db-schema-to-text/?in=user-186902
I think that this program can be extended by dumping all tables data into separate CSV files, similar to those used by PostgreSQL COPY command. Remember to add the same ORDER BY in SELECT ... queries. I have created tool that reads SELECT statements from file and saves results in separate files. This way I can manage which tables and fields I want to compare (not all fields can be used in ORDER BY, and not all are important for me). Such configuration can be easily created using "dump schema" utility.
Check out dbsolo DBSOLO. It does both object and data compares and can create a sync script based on the results. It's free to try and $99 to buy. My guess is the 99 bucks will be money well spent to avoid trying to come up with your own software to do this.
Data Compare
http://www.dbsolo.com/help/datacomp.html
Object Compare
http://www.dbsolo.com/help/compare.html
apgdiff https://www.apgdiff.com/
It's an opensource solution. I used it before for checking differences between differences in dumps. Quite useful
[EDIT]
It's for differenting by schema only
I am looking for a tool/command which can compare data between two PostgreSQL databases. The reason to do this is to have some external verification that the SQL script responsible for data migration from one PostgreSQL database to the other have been written correctly.
Any pointers would be appreciated
regards
Sameer
EMS makes a tool which can do this.
http://sqlmanager.net/en/products/postgresql/dbcomparer
The PostgreSQL site has a nice Software catalogue. Peruse the Administration/development tools category.
I am new to DB2 administration on AS400, could you point me to the best practices/tools to search for errors in the DB2 journals?
So far I use the DSPJRN command but I am unable to make research.
thanks.
Can you describe what the "error" is that you are looking for. Journal records my themselves don't really have errors (I think).
I haven't worked on an AS400 for about 10 years, but when I did use it last century I did do some work with Journals looking for the change history of a row over time and found all of the answers I needed in the online manuals.
From memory somehow I think I wrote a export program to save the output of the DSPJRN program and uploaded it into a DB2 Table so that I could query it with SQL.
DSPJRN JRN(<LIBRARY>/QSQJRN) FILE(<LIBRARY>/CXPBU00001) RCVRNG(<LIBRARY>/QSQJRN<JOURNAL_NUMBER)
5=Display entire entry on a record
F6 Display only entry
F15 Display only entry specific data
From their you can get a job description: <NUMBER>/<USER>/<SYSTEM>
wrkjob <NUMBER>/<USER>/<SYSTEM>
And from their option 4 or 10 to see job logs
The journals can be saved in files aka tables. You can create some programs/SQL to search these tables. On the iSeries one does not have other 'native' tools then the iSeries commands and/or some programming/quering.
I don't know if they are any 'non-native' tools. Remember that DB2/400 is really just one of the many implementations of Universal Database/2. I won't be suprised if a Windows or Linux tools can analyze the iSeries implementation too. They same is true for MQ. A typical iSeries command/menu interface on the iSeries itself (which works fine by the way). Beautifull graphical tools on other platforms that can connect to this iSeries MQ.\
On a second thought, a standard tool for the iSeries is the iSeries navigator. I will check this out on my work tomorrow
We're considering using SSIS to maintain a PostgreSql data warehouse. I've used it before between SQL Servers with no problems, but am having a lot of difficulty getting it to play nicely with Postgres. I’m using the evaluation version of the OLEDB PGNP data provider (http://www.postgresql.org/about/news.1004).
I wanted to start with something simple like UPSERT on the fact table (10k-15k rows are updated/inserted daily), but this is proving very difficult (not to mention I’ll want to use surrogate keys in the future).
I’ve attempted (Link) and (http://consultingblogs.emc.com/jamiethomson/archive/2006/09/12/SSIS_3A00_-Checking-if-a-row-exists-and-if-it-does_2C00_-has-it-changed.aspx) which are effectively the same (except I don’t really understand the union all at the end when I’m trying to upsert) But I run into the same problem with parameters when doing the update using a OLEDb command – which I tried to overcome using (http://technet.microsoft.com/en-us/library/ms141773.aspx) but that just doesn’t seem to work, I get a validation error –
The external columns for complent.... are out of sync with the datasource columns... external column “Param_2” needs to be removed from the external columns.
(this error is repeated for the first two parameters as well – never came across this using the sql connection as it supports named parameters)
Has anyone come across this?
AND:
The fact that this simple task is apparently so difficult to do in SSIS suggests I’m using the wrong tool for the job - is there a better (and still flexible) way of doing this? Or would another ETL package be better for use between two Postgres database? -Other options include any listed on (http://en.wikipedia.org/wiki/Extract,_transform,_load#Open-source_ETL_frameworks). I could just go and write a load of SQL to do this for me, but I wanted a neat and easily maintainable solution.
I have used the Slowly Changing Dimension wizard for this with good success. It may give you what you are looking for especially with the Wizard
http://msdn.microsoft.com/en-us/library/ms141715.aspx
The External Columns Out Of Sync: SSIS is Case Sensitive - I encountered this issue multiple times and it makes me want to pull my hair out.
This simple task is going to take some work either way. SSIS is by no means an enterprise class ETL product yet, but it does give you some quick and easy functionality, and is sufficient for most ETL work. I guess it is also about your level of comfort with it as well.
SCD is way too slow for what I want. I need to use set based sql.
It turned out that a lot of my problems were with bugs in the provider.
I opened a forum topic (http://www.pgoledb.com/forum/viewtopic.php?f=4&t=49) and had a useful discussion with the moderator/support/developer person.
Also Postgres doesn't let you do cross db querys, so I solved the problem this way:
Data Source from Production DB to a temp Archive DB table
Run set based query between temp table and archive table
Truncate temp table
Note that the temp table is not atchally a temp table, but a copy of the archive table schema to temporarily stored data in.
Took a while, but I got there in the end.
This simple task is going to take some work either way. SSIS is by no means an enterprise class ETL product yet, but it does give you some quick and easy functionality, and is sufficient for most ETL work. I guess it is also about your level of comfort with it as well.
What enterprise ETL solution would you suggest?