hello friends I have a problem with the blob data type, I want to migrate some data from one bd to another bd however I have not been able to some tables that have blob type columns, what I have tried is to export a single record in the following way.
first I make a select of the record I want to export to my other bd
select TEMPLATE_DOCUMENT_ID,blob_file from example_table where template_document_id = 32;
then I export the result to obtain the insert
I configure as follows
when I do this I get a script with the data of the record that I want to migrate
if I run this it gives me the following error
Error report -
ORA-01465: invalid hex number
Do you have any idea how I could get the correct data to make my insert?
NOTE: MIGRATION IS DONE FROM ONE ORACLE DATABASE TO ANOTHER ORACLE DATABASE.
Obviously the source database is Oracle. You did not mention what is the target database. In case it is Oracle as well I would suggest using the Oracle Data Pump tool (expdp/impdp). Doc is here: https://docs.oracle.com/cd/B19306_01/server.102/b14215/dp_overview.htm
In case you need it, at least I use it quite often is the VIEW_AS_TABLE option of the tool as it allows me to export a subset of the data.
Related
Background: I am really new. Informatica Developer for PowerCenter Express Version: 9.6.1 HotFix 2
I want to execute a t-sql statement as one step in a work flow:
truncate table dbo.stage_customer
I tried create a mapping, add a sql transformation on it. Input above query in sql query window. I added the mapping to a workflow of just start, the mapping, and the end. When I validate the flow I got this error:
The group [Input] in transformation xxx must have at least one port
I have no idea what ports are needed since this (the truncate statement) basically doesn't need input or output.
Use your query " truncate table dbo.stage_customer" in Pre-SQL command
As Aswin suggested use the built in option in the session property.
But in the production environments user may not have truncate table access for the table in a database. In this case, informatica workflow will fail if you check the truncate target table option. It is good to have a stored procedure to truncate the target table and use that stored procedure in informatica mapping to avoid workflow failures in case of user having no truncate access to the database.
if you would like to truncate a target table before loading why don't you use the in-built option present in session properties?
goto workflow manager-> open session->mapping tab->click on target table listed left side->choose the property "Truncate table option" just enable it
to answer you question, I think you have to connect at least one input and output port into SQL transformation (because it is not unconnected). Just create dummy ports and try again
try this article - click here
I need to export data from one schema and import it to another. But in the second schema there are tables with different names, different attribute names, etc, but these tables are suitable for data in first schema. So I export data as SQL inserts and manually rewrite names etc. in this inserts.
My problem is with tables which have columns with type BLOB. PL/SQL Developer throws error:
Table MySchema.ENT_NOTIFICATIONS contains one or more BLOB columns.
Cannot export in SQL format, use PL/SQL Developer format instead.
But, when I use PL/SQL Developer format (.pde) it is some kind of raw byte data and I can't change what I need.
Is there any solution to manage this?
Note: I use PL/SQL Developer 10.0.5.1710 and Oracle database 12c
I need to do an Oracle data migration from 11g to 12c where schema changes are abundant. I have an excel sheet which describes all the schema changes. Excel sheet has the columns for 'old_table_name', 'old_column_name', 'old_value' and same for the new tables. Some values can be directly copied to the new table and some cannot be done that way.
For example I have to transform the old column value when it is moved to the new table. Some transformation are complex and they cannot be simply mapped. They should be transformed by joining with other tables in the old database. I was trying the Talend Open Studio Data Integration tool for this and found it is a bit complex to go ahead with that tool in my case. Does anyone have an idea of getting this done using Talend or any other tool? What is the ideal approach when doing a migration like this? I have included a sample of the excel sheet below which only has simple transformations.
The kind of converions shown in the spreadsheet can all be performed on the table itself using rename statements and/or basic ddl and dml statements. I would load the old table into the new database and perform these statement on the table.
alter table
old_table_one
rename to
new_table_one;
alter table
new_table_one
rename column
old_col_one
to
new_col_one;
update new_table_one
set new_col_one = 'A_NEW'
where new_col_one = 'A';
etc.
I've created a relational model in Oracle SQL Developer Data Modeler.
I want to add predefined\static data that should exist in the initial clean database: enum values, fixed lists( for example: contries ) using modeler. My goal is to receive script using "DDL File Editor" tool which contains not only "create table" commands and so on, but also "inserts" with initial data.
I there any way to do this?
What might be the easiest way would be to put the DML into the AFTER CREATE tab under Scripts for each table - and to make sure it's included in the DDL script.
I'm attempting to recover the data from a specific table that exists in a system table dump I performed earlier. I would like to append the rows existing in the dump to any rows that may exist in the active table. The problem is, it's likely that the name of the table in the dump is not the same as what exists in the database currently (They're dynamically created with a prefix of ARC_TREND_). In addition, I don't know the name of the table as it exists in the dump, I was hoping to use SQL Developer to analyze the dump file as I can recognize the correct table by it's columns and it's existing rows.
While i'm going on blind faith that SQL Developer can work with my dump file, when attempting to open it, i'm getting a Java Heap OutOfMemory exception raised. I've adjusted the maximum heap size from 640m to 1024m in both sqldeveloper.bat and in sqldeveloper.conf, but to no avail.
Can someone recommend a course of action for me to take to recover the data from a table which exists in a exp created dump file? A graphical tool would be nice, but I'm no stranger to the command line. I need to analyze the tables that exist in the dump in order to pick the correct one out. Then I assume I can use imp TABLE= to bring it back into the active instance. It likely won't match the existing table name, so I will use SQL Developer to copy the rows from the imported table to the table where I need them to be.
The dump was taken from a Linux server running 10g, and will be imported to (the same server & database instance, upgraded) an 11g instance of the same database.
Thanks
Since you're referring to imp rather than impdp, I assume this wasn't exported with data pump. Either way, I doubt you'll get anything useful through SQL Developer.
Fortunately most of what you're trying to do is quite easy from the command line; just run imp with the INDEXFILE parameter, which will give you a text file containing all the table (commented out with REM) and index creation commands. From that you should be able to spot the table from its column names.
You can't really see any row data though, so if there's more than one possible match you might need to import several tables and inspect the data in them in the database to see which one you really want.