I have the problem that DataGrip truncates all table names after 38 characters. See picture.
We use Oracle 12.2.0, so table names should be allowed to contain 128 bytes, right? In DbForge the tables are displayed correctly, in DataGrip an entry is displayed in the table list but they cannot be opened.
I am using the driver ver. 12.2.0.1 [latest]. How can I fix the problem?
Unfortunately, Oracle 12 officially is not yet supported in DataGrip. Before 12 there was a 30-character limit for table names.
Expect the fix in DataGrip 2019.3
Related
Using DBeaver, I'm trying to migrate a table from an Oracle Instance to another. I just right-click over the desired table, select Export Data and follow the wizard.
My problem is that the CLOB column is truncated. In the source database instance the max CLOB length is 6046297, but in the target it is 970823. The source has 340 records with the CLOB column value larger than 970823.
I've just noticed now that the source table has 24806 rows and the target has 12876. The table sequence id, the max value is 70191 in the source and 58185 in the target. The source has 22716 registers with id less than 58185 and the target has 12876, so it wasn't just a truncation. DBeaver is not transferring half of the registers.
I'm connecting to Oracle with the JDBC driver. Is there an configuration in DBeaver or in the connection or in the driver that would allow me to transfer this table? Maybe I just try to use another tool.
I want to move tables from my sybase database to my oracle database. However, some tables in my sybase database have long identifiers or table names (above 30chars) so the "copy to oracle" function on Oracle SQL Developer keeps failing.
How can I migrate TABLE DATA only to my oracle schema?
Also note, I tired doing the data migration flow but when i get to the step to move data, it doesn't let me move table data. It just isn't visible. It'll only let me move procedures and such.
Do i have something disabled?
You need to enable long identifiers in your 12cR2 (12.2.x.y) or newer version of Oracle Database.
As soon as you set COMPATIBLE to “12.2.0” or higher for your Database, you can use the Long identifiers for every object in Oracle with the following exceptions:
Database name ≤ 8 byte
Disk groups ≤ 30 byte
PDB names ≤ 30 byte
Rollback segments ≤ 30 byte
Tablespace names ≤ 30 byte
Tablespace sets ≤ 30 byte
So let's do a table then...I'm running 12.2 in this scenario, but it would be find in 18c or 19c as well.
Click OK and I get - Success!
Copied Objects:
Sybase.copy_to_oracle.dbo.TABLE.this_is_a_table_to_hold_employees_please_dont_put_customers_in_it
Drop Target: HR
Copy DDL: Yes
Do Not Replace Existing Objects
Copy Data: Yes
Append Existing Objects
Task Succeeded.
1 table(s) copied.
Created table this_is_a_table_to_hold_employees_please_dont_put_customers_in_it and inserted 0 row(s)
This question already has an answer here:
Use of FLASHBACK in Oracle
(1 answer)
Closed 6 years ago.
I am new to Oracle Advance concepts, In my application I have accidentally "truncate" the data. I am facing difficulty to
restore the truncated data. I googled about it alot, I found there is "FLASHBACK" command from oracle 10g. I tried it using timestamp approach in flashback
but I am getting the following error:
Error: The table definition has changed.
Could any body tell me how to get back my truncated table data?
Is it possible? If it is Please let me know the procedure to get back the data.
The error message is pretty clear. FLASHBACK is not available if you had DDL operations on the table (add or drop column, add or drop constraint, etc.) It's right there in the first paragraph in the documentation. http://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_9012.htm As Tim suggests - this is where backing up your data would have helped.
Edit: To be very precise, the wording in the Oracle documentation is (with my emphasis): Oracle Database cannot restore a table to an earlier state across any DDL operations that change the structure of the table. So adding or dropping a column will prevent the use of FLASHBACK since they change the structure of the table. TRUNCATE does not, so TRUNCATE by itself does not prevent FLASHBACK (although TRUNCATE is a DDL operation). I got carried away in the first paragraph with "add or drop constraint" - I actually don't know if that will prevent FLASHBACK; one can find out by experimenting.
I want to fastload in teradata with JDBC.
I used preparestatements.
My table name is :XXX_XXXX_XXXXXXXX_XXXXXXXX
and none of my column names are bigger than 30 chars too.
But I got this error.
I dont understand why.
Thanks.
Your tablename is probably too long, when you check http://developer.teradata.com/doc/connectivity/jdbc/reference/current/jdbcug_chapter_2.html#BABIIEAG you'll find
JDBC FastLoad creates two temporary error tables with the following naming convention: ._ERR_1 and ._ERR_2
and
The name of the destination table in the Teradata Database that is to be used by JDBC FastLoad CSV must not exceed 24 characters because of the name of the two error tables created by JDBC FastLoad CSV
If this was a standard FastLoad i would simply add ERRORTABLES and use my own error table names, but this seems not to be available in JDBC FastLoad.
So your only option is to create the table with a shorter name, FastLoad it and then submit a RENAME TABLE.
I have 2 databases, and I want to transport an existing table containing a CHAR column from database A to database B.
Database A is Oracle 9i, has encoding WE8ISO8859P1, and contains a table "foo" with at least 1 column of type CHAR(1 char). I can not change the table on database A because it is part of a third party setup.
Database B is my own Oracle 10g database, using encoding AL32UTF8 for all kinds of reasons, and I want to copy foo into this database.
I setup a database link from database B to database A. Then I issue the following command:
*create table bar as select * from #link#.foo;*
The data gets copied over nicely, but when I check the types of the columns, I notice that CHAR(1 char) has been converted into CHAR(3 char), and when querying the data in database B, it is all padded with spaces.
I think somewhere underwater, Oracle confuses it's own bytes and chars. CHAR(1 byte) is different from CHAR(1 char) etc. I've read about all that.
Why does the datatype change into a padded CHAR(3 char) and how do I stop Oracle from doing this?
Edit: It seems to have to do with transfering CHAR's between two specific patchlevels of Oracle 9 and 10. It looks like it is really a bug. as soon as I find out I'll post an update. Meanwhile: don't try to move CHAR's between databases like I described. VARCHAR2 works fine (tested).
Edit 2: I found the answer and posted it here: Why does Char(1) change to Char(3) when copying over an Oracle DBLINK?
Too bad I can not accept my own answer, because my problem is solved.
This problem is caused by the way Oracle (mis)handles character conversions between different character sets based on the original column length definition. When you define the size of a character type column in bytes, Oracle does not know how to do a conversion and bodges it. The solution is to always define the length of a character type in characters.
For a more in-depth explanation of the problem and how I figured this out have a look at
http://www.rolfje.com/2008/11/04/transporting-oracle-chars-over-a-dblink/
YOu need to learn the difference between the WE8ISO8859P1 NLS (which stores characters in one byte) and the AL32UTF8 which stores characters in up to four bytes. You will need to spend some quality time with the Oracle National Language Support (NLS) Documentation. Oracle automatically does the conversion through the database link, in an attempt to be helpful.
Try the following from your SQL prompt:
ALTER SESSION NLS_NCHAR WE8ISO8859P1
create table bar as select * from #link#.foo;
The first thing I would try is Creating the table NOT as a CTAS but with a list of column definitions and try to perform an insert of the first few thousand rows. If that didn't succeed then it would be very clear why... and you'd have quick confirmation that Thomas Low is dead on accurate.