What is maximum column name length?

What is the maximum column name length in Oracle (XE) ?
Peter

Handle:      user559463
Status Level:      Newbie
Registered:      Feb 18, 2007
Total Posts:      575
Total Questions:      260 (181 unresolved)
so many questions & so few answers.
What is the maximum column name length in Oracle (XE) ?the limit is not Oracle's, but ANSI/ISO SQL Standard imposed limit

Similar Messages

Column name length exceeds maximum allowed

Hello,
I get this error when am trying to create a table. ERROR: Column name length exceeds maximum allowed length(30).
Is it able to extend this length to be more than 30 ? By the way I am using Oracle 11g
Regards,
Moussa El Tayeb
about.me/MoussaEltayeb

Hello,
also Oracle has some limits. For more Information see the logical limits
http://docs.oracle.com/cd/E14072_01/server.112/e10820/limits.htm
regards
Peter

Column name length

Hi,
Max column name length is 30
Do we have any settings to increase this size in 10g
Thanks

no
oracle still only allocated 30 to store the name in the data dictionary:
SQL> desc sys.col$
Name                          Null?    Type
OBJ#                          NOT NULL NUMBER
COL#                          NOT NULL NUMBER
SEGCOL#                       NOT NULL NUMBER
SEGCOLLENGTH                  NOT NULL NUMBER
OFFSET                        NOT NULL NUMBER
NAME NOT NULL VARCHAR2(30)
TYPE#                         NOT NULL NUMBER
LENGTH                        NOT NULL NUMBER
FIXEDSTORAGE                  NOT NULL NUMBER
PRECISION#                             NUMBER
SCALE                                  NUMBER
NULL$                         NOT NULL NUMBER
DEFLENGTH                              NUMBER
DEFAULT$                               LONG
INTCOL#                       NOT NULL NUMBER
PROPERTY                      NOT NULL NUMBER
CHARSETID                              NUMBER
CHARSETFORM                            NUMBER
SPARE1                                 NUMBER
SPARE2                                 NUMBER
SPARE3                                 NUMBER
SPARE4                                 VARCHAR2(1000)
SPARE5                                 VARCHAR2(1000)
SPARE6                                 DATEMessage was edited by:
shoblock

Column Name Length of Tables In ODI

Hello Everyone,
I am facing with an unique issue in ODI. We are using ODI AIA for Integration, which has default XML exports of some JD Edwards tables.
These tables are automatically reversed and models are created using AIA, one such file is named Base.xml and is reversed as a Model named 'Base' in ODI. In this model there are various tables which are created on the basis of the contents of XML file. The column names are derived from XML Tags. Some XML tags are having length greater than 30. This does not create a problem in the model as such, but when using it as source in interface, the temporary tables that are created on-the-fly in a schema (Oracle) does not allow the length to be greater than 30 and hence the interface fails (error : Column name length exceeded), add to it, ODI suffixes column names with a Cnumber_. Since the XML file and tags are standard within the AIA, we cannot alter the length.
So is there a way to reduce the column name length of temporary tables which are created at runtime by ODI based on the source XML files ?
Thanks in advance,
NJ

If you are using temp table that are created on the fly, you can not control the column length, so you have only one alternative just change the column name (less than 30) in model level.
Thanks

What is the column name when use select ... from table(my_table)

I have some code that takes a csv and loads it into a type table. I am now trying to select from this table but am not sure what column name to use in my cursor. (See below I have c2.???).
FUNCTION in_list_varchar2 (p_in_list IN VARCHAR2) RETURN VARCHAR2_TT is
l_tab VARCHAR2_TT := VARCHAR2_TT();
l_text VARCHAR2(32767) := p_in_list || ',';
l_idx NUMBER;
BEGIN
LOOP l_idx := INSTR(l_text, ',');
EXIT WHEN NVL(l_idx, 0) = 0;
l_tab.extend;
l_tab(l_tab.last) := TRIM(SUBSTR(l_text, 1, l_idx - 1));
l_text := SUBSTR(l_text, l_idx + 1);
END LOOP;
RETURN l_tab;
END in_list_varchar2;
schema_list := 'SCOTT, TOM, MIKE';
schema_names := regexp_replace(schema_list, '([^,]+)', '''\1''');
schema_list_t := DATAPUMP_UTIL.in_list_varchar2(schema_list);
for c2 in
select *from table(schema_list_t)
loop
dml_str := 'DROP USER ' || c2.??? || 'CASADE';
EXECUTE IMMEDIATE dml_str;
end loop;

Chris wrote:
I have some code that takes a csv and loads it into a type table. I am now trying to select from this table but am not sure what column name to use in my cursor. (See below I have c2.???).
FUNCTION in_list_varchar2 (p_in_list IN VARCHAR2) RETURN VARCHAR2_TT is
l_tab VARCHAR2_TT := VARCHAR2_TT();
l_text VARCHAR2(32767) := p_in_list || ',';
l_idx NUMBER;
BEGIN
LOOP l_idx := INSTR(l_text, ',');
EXIT WHEN NVL(l_idx, 0) = 0;
l_tab.extend;
l_tab(l_tab.last) := TRIM(SUBSTR(l_text, 1, l_idx - 1));
l_text := SUBSTR(l_text, l_idx + 1);
END LOOP;
RETURN l_tab;
END in_list_varchar2;
schema_list := 'SCOTT, TOM, MIKE';
schema_names := regexp_replace(schema_list, '([^,]+)', '''\1''');
schema_list_t := DATAPUMP_UTIL.in_list_varchar2(schema_list);
for c2 in
select *from table(schema_list_t)
loop
dml_str := 'DROP USER ' || c2.??? || 'CASADE';
EXECUTE IMMEDIATE dml_str;
end loop;
I have some code that takes a csv and loads it into a type table.Why a type table? Where is type table defined as such?
with PL/SQL, objects must be declared before they can be referenced.
You need to correct syntax errors before tackling any runtime/logic flaws.

Maximum File name length in a DIR in AL11

Hello,
what is the MAximum lenght of a File name in TCODE AL11.
i have a program which upload data in AL11 in a Directory but some of the File name get truncated like mention below as I Am using the FM FILE_GET_NAME to get the File name.
Also I am Converting them first to PDF format and uploading them in the directiry, but some file name gets trucated.
12/09/2011 02:31:35 Administ         115,776 5804000041_20100510_IT00739320158_COATESLORILLEUXMüREKKEP.P
12/12/2011 04:53:18 Administ         115,776 5804000041_IT00739320158_COATES LORILLEUX MüREKKEP.P
12/12/2011 04:54:37 Administ         115,776 5804000042_20100510_IT00739320158_COATES LORILLEUX MüREKKEP.P
And i need the extensionn .PDF as it is required. Kindly Help
Thanks
Solanki Ritesh

Hi Lokesh,
I am using    g_file_name    TYPE file_name,
I am using the Following code to insert where g_file_name I get from
     CALL FUNCTION 'FILE_GET_NAME'
        EXPORTING
          logical_filename = c_log_file
          eleminate_blanks = space
          parameter_1      = g_par
        IMPORTING
          file_name        = g_file_name
        EXCEPTIONS
          file_not_found   = 1
          OTHERS           = 2.
      IF sy-subrc <> 0.
        g_retcode = sy-subrc.
      ENDIF.
    ENDIF.
G_par is calculated based on Inv_num_postdate_VAtnum_Custname.
      OPEN DATASET g_file_name FOR OUTPUT IN BINARY MODE.
      IF sy-subrc = 0.
        LOOP AT i_tlines INTO wa_tlines_line.
          TRANSFER wa_tlines_line TO g_file_name.
        ENDLOOP.
        CLOSE DATASET g_file_name.
      ENDIF.
But it truncates the file name like this
9126000019_20120110_IT00879330033_OFFICINE GRAFICHE NOVARA 1901 SPA.p
it shud be
9126000019_20120110_IT00879330033_OFFICINE GRAFICHE NOVARA 1901 SPA.pdf
Thanks

Maximum Server Name Length

I'm trying to determine if I can have names greater than 15 characters in both Windows server 2012 and AD. To be clear, we are not concerned with backwards compatibility with anything older than Windows 7/2008 R2, so NetBIOS is not a factor that I know of.
I'm just wondering if using log server names will cause issues in AD, or from a stability/supportability standpoint. Please advise.

The maximum length of the host name and of the fully qualified domain name (FQDN) is 63 bytes per label and 255 bytes per FQDN. Note Windows does not permit computer names that exceed 15 characters, and
you cannot specify a DNS host name that differs from the NETBIOS host name.

What do the column names represent?

In wiew v$flashback_database_stat, there are some columns such as BEGIN_TIM, END_TIM, FLASH_DATA, DB_DATA, REDO_DATA. What do they represent?----No.159
Message was edited by:
frank.qian

From the Reference Guide
http://download-east.oracle.com/docs/cd/B14117_01/server.101/b10755/dynviews_1089.htm#sthref3128
BEGIN_TIME DATE Beginning of the time interval
END_TIME DATE End of the time interval
FLASHBACK_DATA NUMBER Number of bytes of flashback data written during the interval
DB_DATA NUMBER Number of bytes of database data read and written during the interval
REDO_DATA NUMBER Number of bytes of redo data written during the interval
ESTIMATED_FLASHBACK_SIZE NUMBER Value of ESTIMATED_FLASHBACK_SIZE in V$FLASHBACK_DATABASE_LOG at the end of the time interval

Membership rules does not work with UDF column name having the max length

Found a bug in OIM .
Membership rules does not work with UDF column name having the maximum length
Steps to Reproduce
1.Create a UDF having max column name length for eg UDF_USR_PERSONAL_SUB_DOMAIN_CO (lable = Personal Code)
2. Create a simple Rule like Personal Code = 7000
3. Assign this Rule as a member ship rule of a Group.
4. Create a user with Personal Code = 7000.
5. User doesnot get the group membership.
Thanks
Suren

Yes , i verified logs as well .
If you just decrease the column name length , w/o making change to any other attributes , it starts working ..
Thanks
Suren

Column name in a query contains special characters

Hi folks,
The column name in a query contains special characters. For example ~ or ^. The creator of the table put these column names under double quotation while creating the table. When I get the column names form the result set meta data object it returns without quotation. Is there any way to tell the jdbc driver so that it return those column names as it was created, I mean in double quotation.
The help is urgent. I will appreciate any suggestions. Thanks �.
[using oracle driver for 10g]
Thanks
Angelina

Just because the column names were in quotations when the database was created doesn't mean that the quotes are actually part of the names. What's inside the quotes is what makes the column name in the database. If I created a column as "abcd" and put it in quotes just like that ("abcd"), it would go in the database as abcd since SQL would strip off the quotes.
And there's your answer. Just put all column names in quotes whenever you need to talk to SQL. It will strip off the quotes and understand.
I think SQL will also accept square brackets ([ and ]).

Ambiguous column name 'ITEMCODE'.

hi,
while executing the query by using stored procedures
i got this error."Ambiguous column name 'ITEMCODE' ".
-priya

Hi priyadharshini
The error usually means your are joining multiple tables,
and doesn't clearly state from which table you're trying to retrieve the column.
Please have a look at this page.
http://databases.aspfaq.com/database/what-does-ambiguous-column-name-mean.html
Regards,
Syn Qin
SAP Business One Forums Team

Maximum length allowed for column name, index name and table name?

Hi,
I want to know what is the maximum length allowed for coulmn name, table name and index name in MaxDB ?
Regards
Raj

Hi Raja,
simply check the catalog:
sqlcli bwt=> \dc domain.columns
Table "DOMAIN.COLUMNS"
| Column Name      | Type         | Length | Nullable | KEYPOS |
| ---------------- | ------------ | ------ | -------- | ------ |
| SCHEMANAME       | CHAR UNICODE | 32     | YES      |        |
| OWNER            | CHAR UNICODE | 32     | YES      |        |
| TABLENAME        | CHAR UNICODE | 32     | YES      |        |
| COLUMNNAME       | CHAR UNICODE | 32     | YES      |        |
and
sqlcli bwt=> \dc domain.indexes
Table "DOMAIN.INDEXES"
| Column Name        | Type         | Length | Nullable | KEYPOS |
| ------------------ | ------------ | ------ | -------- | ------ |
| SCHEMANAME         | CHAR UNICODE | 32     | YES      |        |
| OWNER              | CHAR UNICODE | 32     | YES      |        |
| TABLENAME          | CHAR UNICODE | 32     | YES      |        |
| INDEXNAME          | CHAR UNICODE | 32     | YES      |        |
regards,
Lars

What is maximum length of oracle database objects name

Hi all,
Can anyone tell me what is maximum length of oracle database objects name .
I guess it is 30 ,correct me if i am wrong thank you.
regards,
P Prakash

Some objects (like synonyms or java classes) can have longer names than 30 chars:
SQL> create or replace synonym empempempempempempempempempempempempemp for emp
Synonym created.though internally oracle will generate short names for such objects:
SQL> select synonym_name from user_synonyms where synonym_name like '%EMPEMPEM%'
SYNONYM_NAME
/969ea190_EMPEMPEMPEMPEMPEMPEM
1 row selected.and not always will the long name be actually usable:
SQL> select * from empempempempempempempempempempempempemp
Error at line 1
ORA-00972: identifier is too long

What is the order of Column Names in Sqlite query results?

I am writing an application using Adobe Air, Sqlite, and Javascript.
After writing the following select statement:
          SELECT field1, field 2, field 3, field 4 FROM TableA;
I would like to get the columnName/data combination from each row -- which I do successfully with a loop:
          var columnName="";
          for (columnName in selResults.data[i]) {
               output+=columnName + ":" + selResultsdata[i][columnName] + ";";
My issue is that the column names come out in a different order every time I run the query and never once have they come out in the desired order -- field 1, field 2, field 3, field 4. If I run the query in Firefox's Sqlite Manager, the columns come out in the "proper" order. When I run them in Adobe Air, the order will be the same if I run the query mulitple times without closing the app. If I make a change such as declaring the columnName variable with "" before the for column, or declare it as (var = columnName in selResults.data) , then the order changes. If I shut down my app and re-open after lunch and run query, it comes out in another order. At this time, I'm not interested in the order of the rows, just the order of the columns in each output row. I've even tried assiging an index to columnName which seems to just pick up a single letter of the columnName.
I'm in the process of changing my HTML presentation of the data to assign a precise columnName to an HTML table title, but I'm reluctant to let go of the above concept as I think my separation of HTML/presentation and Javascript would be better if I could use the solution described above.
So, does anybody know how to force the order of the columnNames in my output -- or what I'm doing to cause it to come out in a different order?
Jeane

Technically there isn't any "order" for the return columns. They aren't returned as an Array -- they're just properties on an Object instance (a "generic object"). The random order you're seeing is the behavior of the for..in loop iterating over the properties of the object. Unfortunately, with a for..in loop there is no guaranteed order for iterating over properties (and, as you've seen, it tends to vary wildly).
The only solution is to create your own list of the column names and sort it the way you want to, then use that to create your output. For example, use the for..in loop to loop over the properties, but rather than actually get the values, just dump the column names into an Array:
var columnName="";
var columns = [];
for (columnName in selResults.data[i]) {
    columns.push(columnName);
columns = columns.sort(); // just uses the default alphabetical sort -- you would customize this if desired
var j = 0;
for (j = 0; j < columns.length; j++) {
    columnName = columns[j];
    output+=columnName + ":" + selResultsdata[i][columnName] + ";";

Elementary: what is the dollar-sign ($) in a column name mean?

I periodically see dollar signs in column names in Oracle tables. For example, when I create a LOB, often times the LOB segment will end in a dollar-sign (or two). Sometimes when one of the developers creates an object, I see some of the field namess have dollar-signs at the end of them.
What does the dollar-sign mean?
What does two dollar-signs mean?
Just curious...they seem to function as normal characters.

They are just normal characters. But Oracle (and other vendors) will frequently use characters like $ that normal developers don't normally use in order to create conventions around table names.
For example, Oracle provides a number of data dictionary tables that use x$, v$, and gv$ as prefixes. There is nothing inherently special about those prefixes. But they convey meaningful information to the users of those systems (x$ views are undocumented views, v$ views provide information about activity on the local instance, gv$ views provide information about activity on all the instances of a RAC cluster). And using those sorts of prefixes prevents confusion between application tables and Oracle tables. Lots of applications, for example, have a SESSION table. Having the V$ prefix for the Oracle-delivered V$SESSION table makes it easy to avoid confusion from having two identically named tables.
Justin

What is maximum column name length?

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