| Restriction on the length of the names of date-fields? [message #158777] |
Tue, 14 February 2006 06:16  |
kopinsky
Messages: 7
Registered: February 2006
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Junior Member |
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Hello,
i´m not sure if this is the right forum to post my question, so please redirect me if i´m at the wrong place here.
My problem comes down to this: i have quite a big database and an visual basic-application that works on that db. until today, this worked fine. now i encounter strange behaviours of the application, most of all that it can´t find certain columns. So i looked closer at the database and found out that when i make a select on a certain table (with sql plus) i get a resultset in which some column names are truncated to 8 characters. The funny thing is that only fields of the datatype "date" are truncated. A varchar field with the name "MELDBTROFBNACHRI" is shown collectly but a date-field with the name "ERSTERFASS" becomes "ERSTERFA".
I did a couple of changes to the database recently but can´t see what they can have to do with this. What i did was that i changed a couple of indexes and deleted trigger. But none of this was done with date-fields and on this particular table i only reassigned the primary key.
Can anyone give me a hint on what is wrong here and why this is suddenly happening?
Thanks in advance for any help.
Christoph
Oracle Server 9i
Windows 2000 Pro
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| Re: Restriction on the length of the names of date-fields? [message #158784 is a reply to message #158779] |
Tue, 14 February 2006 06:58  |
kopinsky
Messages: 7
Registered: February 2006
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Junior Member |
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hmmm, first of all i get the truncated column name also when i select data from the database via oledb. And what confuses me is: why does it truncate ONLY columns of the type date and not all the others?
Here is part of the description of my table:
TNR NOT NULL NUMBER(38)
VNR NOT NULL NUMBER(38)
ERSTERFASS DATE
AKTZ VARCHAR2(50)
AKTZWJH VARCHAR2(50)
AKTZLDS VARCHAR2(50)
EIGNER_K NUMBER(38)
MELDBTROFBNACHRI CLOB
INHALT NUMBER(38)
MERKZETTEL CLOB
BEARBENDE DATE
And here is what i get, when i do a select:
TNR VNR ERSTERFA AKTZ AKTZWJH AKTZLDS EIGNER_K MELDBTROFBNACHRI INHALT MERKZETTEL BEARBEND
------ ------- -------- ----------------- -------- ------- -------- ---------------- ------ ---------- --------
1 100001 06.02.06 51.1.3/H/00001/06 3 0
As you can see, only the date-fields are truncated. Funny ey?
Ok, i try to describe what i did lately:
We have a visual basic 6-application that works on a oracle-database and until a couple of days ago, the version of our oracle server was 8.1. We used the Microsoft oledb-provider to connect to the database. I then installed the 9i-server, imported our database and connected the application. It still worked. I then changed to the Oracle oledb-provider, because i wanted to change fields of the datatype long to clob, which are only supported by the oracle oledb-provider. Everything was fine, the application was still working. I then did a couple of redefinitions of the table-definitions. What i did was that i changed, as i mentioned above, long-columns to clob-columns. I deleted a couple of triggers and i changed the constraints in most of the tables definitions (some where deleted, some where added). In the particular table, shown above, i only changed the primary key, which used to be "tnr and vnr" and is now only "vnr". And i changed some columns to clob.
That is all i can remember. Any ideas?
Thanks for your help.
Christoph
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| Re: Restriction on the length of the names of date-fields? [message #158788 is a reply to message #158784] |
Tue, 14 February 2006 07:13 |
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Mahesh Rajendran
Messages: 10707
Registered: March 2002
Location: oracleDocoVille
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Senior Member
Account Moderator |
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There is NO problem at all.
This is just formatting!.
Paraphrasing another frequent contributor
default behaviour is context dependent.
default behaviour is not standard behaviour.
scott@9i > select sysdate as Today_Date from dual;
TODAY_DAT
---------
14-FEB-06
scott@9i > select to_char(sysdate,'dd-mon-yyyy HH24:mi:ss') as Today_date from dual;
TODAY_DATE
--------------------
14-feb-2006 08:07:19
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