charge of the external table
I load a file .csv to table data.I tried to load it using EXTERNAL TABLES
Is there a way to specify null in the external tables loaded if the column has no data queued (CSV) external loading
Thank you
Do you mean?
MISSING FIELD VALUES ARE NULL
Tags: Database
Similar Questions
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Since data is stored outdoors, and the definition that is stored inside, it means that a the table structure of the outer table is stored in the database as well (or a virtual table based on the definition of the external table...)
I'll hit the ORA-DOCS again once, back in the external tables read tonight on them 2 or 3 sources and it is not quite clear whether real data with structure exists outside the database or an internal table set (and stored) retrieves data from an outside source.
Since data is stored outdoors, and the definition that is stored inside, it means that a the table structure of the outer table is stored in the database as well (or a virtual table based on the definition of the external table...)
The 'definition' you refer to IS the structure of the table; they are one and the same. There is no 'table' stored in the database using space or storage. When a query on an external table is executed, the data source is read.
I'll be hitting the ORA-DOCS up again, just got back into external tables tonight reading up on them from 2-3 sources and it is not quite clear if an actual data with structure exists out of the database , or an internally defined (and stored?) table draws data from an outside source.
I suggest you that start with the documentation of Oracle - including the ground provided the link to:
If any "metadata" are stored outside the database depends on if the file that is outside of the database was produced by Oracle using the robot UNLOADING discussed in this doc
Unloading of data using ORACLE_DATAPUMP Access driver
To unload data, you use the
ORACLE_DATAPUMP
driver access. The stream that is discharged is in a proprietary format and contains all of the data column for each row being unloaded.A discharge operation also creates a stream of metadata that describes the content of the data stream. The information in the metadata stream are required to load the stream. Therefore, the metadata stream is written to the file data and placed before the data stream.
If YOU provide data/files, then you MUST provide it in the format expected by the external table statement. You can, if you wish, use a preprocessor to convert ANY file (zip, encrypted, etc.) in the required format.
For YOUR files, you can the metadata stored in the same file, or elsewhere, if you choose, but Oracle will have NO knowledge of this fact and not will NOT be involved in the transformation or read any of the metadata that you provide. Your preprocessor must remove all these metadata and ONLY provide data in the format appropriate for Oracle to use.
If the file was produced by the process of UNLOADING Oracle then it will include metadata that Oracle WILL read, use, and remove as says this quote from doc above. These external metadata is added to the real external table definintion/metadata stored in the dictionary.
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Key issue of the external table preprocessor - ssh
I want an external table that runs a df command in a script
DFH.sh more
/ bin/df h
CREATE TABLE XT_df
(
SCRIPT_OUTPUT VARCHAR2 (2000)
)
EXTERNAL ORGANIZATION
(TYPE ORACLE_LOADER
Datapumpdir default DIRECTORY
ACCESS SETTINGS
(RECORDS DELIMITED BY NEWLINE
PREPROCESSOR datapumpdir: 'dfh.sh'
jump 1
FIELDS TERMINATED BY ', '.
surrounded of possibly "" "
)
LOCATION (datapumpdir: 'xtdf.dat')
)
Select * from XT_df
And it works. I see my df output.
I want to run something similar on multiple hosts, but the same host, so I place another table and call another shell script to run a remote ssh script after I have set user equivalence
/ usr/bin/SSH oracle@remotehost1 ' df-h | grep u02'
the works of shell script
However, qualifying by selecting in the external table I get ssh host checking has no error.
[Error] Run (1: 1): ORA-29913: error in executing ODCIEXTTABLEFETCH legend
ORA-29400: data cartridge error
KUP-04095: order of preprocessor /winlogs/dfh.sh has detected the error "host key verification failed.
"
So what could be the cause that if she works well as oracle from command line, checking the .ssh key is on the other side (I think).
> Datapumpdir: 'dfh.sh PREPROCESSOR'
Modify the script above to include the following line as the second line of the script
env | Tri o /tmp/capture.env
view the contents of /tmp/capture.env return here after it gets filled
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When to load the external table condition
HelloIs my version of db: oracle 11g
I have a 6 gig csv file.
I divided it several 15 MB csv files.
But only the first csv file has header (with column headers).
I have to load each of these files into a target table.
I created an external table with jump 1.
But how can I substitute jumping 1 for other csv files.
Is there a way I can do it in the external table definition.
I can't merge the split csv files and run as one big file. So I don't hv this option. Please advice.
You should be able to use the LOAD WHEN clause to exclude a line based on the contents of a field. Or the other
WHEN LOAD 1 / 2! = "ID".
or, if the bonds are quoted,
WHEN LOAD 1:4! = « « ID » »
or you can always add a list of fields to your specifications and the names of the fields in the reference LOAD WHEN the condition instead of using an absolute position.
Don't know if you saw my comments on the use of the tail command before you replied, but if the break-up of the file is part of your project of automated process, and then deleting the header row could certainly be integrated into this process if your on a unix platform and using the split command to split the file.
Kind regards
Bob
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Using the external table error
Hi all
This is the first time I use the external table for loading the data.
I did these steps
In the D:\sqlloade folder, I have my text file containing data example.txt
I ran these queries
CREATE OR REPLACE DIRECTORY ext_tab_data AS 'D:\sqlloader';
Directory created
CREATE TABLE fxops.t_ext ( t number ) ORGANIZATION EXTERNAL ( TYPE ORACLE_LOADER DEFAULT DIRECTORY ext_tab_data ACCESS PARAMETERS ( RECORDS DELIMITED BY NEWLINE FIELDS TERMINATED BY ',' MISSING FIELD VALUES ARE NULL ( t number ) ) LOCATION ('sample.txt') ) PARALLEL 5 REJECT LIMIT UNLIMITED;
create table
When I tried to create a view on that table, he throws an error
CREATE OR REPLACE VIEW fxops.t_view AS SELECT * FROM fxops.t_ext; SQL Error: ORA-06564: object EXT_TAB_DATA does not exist 06564. 00000 - "object %s does not exist" *Cause: The named object could not be found. Either it does not exist or you do not have permission to access it. *Action: Create the object or get permission to access it.
Sign in, and then run this:
Select HOST_NAME from v$ instance;
is this the same hostname that you are connected?
Kind regards
Harry
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Hello
In my schema contains a collection of tables and external tables. How can we identify a table is a normal (or) table external?
Thank you
RajeshPascale says:
HelloIn my schema contains a collection of tables and external tables. How can we identify a table is a normal (or) table external?
Thank you
Rajesh[url http://www.oracle.com/pls/db102/search?remark=quick_search&word=ALL_EXTERNAL_TABLES&tab_id=&format=ranked] ALL/DBA/USER_EXTERNAL_TABLES contain details of the external Tables.
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Oracle 11.2.0.1
Windows 7 Edition Home Premium 64-bit
On every weekend, we get a file with the text like this:
All ABOUT 100-125 billing information for our various regional staffs.CUST_NAME:M/S ABC & COMPANY -------------------------------------------------------------------------------- PROD_ID PR_05 STEAM_PIPE BILL_AMOUNT_ADVANCE 1245.07 WITH VAT BILL_DATE 17-03-2011 GOODS_DELIVERED_ON 20-03-2011 HAPPY CARGO CUST_NAME:M/S XYZ & COMPANY -------------------------------------------------------------------------------- PROD_ID PR_09 PAPER_BAGS BILL_AMOUNT_CREDIT 4000.07 WITHOUT VAT BILL_DATE 17-03-2011 GOODS_DELIVERED_ON 20-03-2011 SHIVAM COURIER ...
We need an external table something like this:
CREATE TABLE REGIONS_SALE
(
COL1 VARCHAR2 (40),
COL2 VARCHAR2 (30),
COL3 VARCHAR2 (15).
COL4 VARCHAR2 (20)
);
And data should looks like this:
Select * from REGIONS_SALE;
Kindly help me, how to create the external table with the name of firms repeated in the COL1 of fixed length text file.COL1 COL2 COL3 COL4 ABC & COMPANY PROD_ID PR_05 STEAM_PIPE ABC & COMPANY BILL_AMOUNT_ADVANCE 1245.07 WITH VAT ABC & COMPANY BILL_DATE 17-03-2011 ABC & COMPANY GOODS_DELIVERED_ON 20-03-2011 HAPPY CARGO XYZ & COMPANY PROD_ID PR_09 PAPER_BAGS XYZ & COMPANY BILL_AMOUNT_CREDIT 4000.07 WITHOUT VAT XYZ & COMPANY BILL_DATE 17-03-2011 XYZ & COMPANY GOOD_DELIVERED_ON 20-03-2011 SHIVAM COURIER
Thanking you.One way is to create a view:
SQL> CREATE TABLE TEST_EXT 2 ( 3 str VARCHAR2(4000 BYTE), 4 RN NUMBER 5 ) 6 ORGANIZATION EXTERNAL 7 ( TYPE ORACLE_LOADER 8 DEFAULT DIRECTORY TESTDIR 9 ACCESS PARAMETERS 10 ( RECORDS DELIMITED BY NEWLINE 11 BADFILE 'test.bad' 12 LOGFILE 'test.log' 13 NODISCARDFILE 14 READSIZE 1048576 15 FIELDS LDRTRIM 16 REJECT ROWS WITH ALL NULL FIELDS 17 ( str (1:4000) CHAR(4000), 18 rn recnum 19 ) ) 20 LOCATION (TESTDIR:'test.txt') 21 ); Table created. SQL> create or replace view test_vu as 2 select col1,col2,col3,col4 3 from( 4 select str,max(case when str like 'CUST_NAME:%' then replace(str,'CUST_NAME:') else null end) over(partition by sm) col1, 5 regexp_substr(str,'[^ ]+') col2,regexp_substr(str,'[^ ]+',1,2) col3,regexp_substr(str,'[^ ]+',1,3) col4 6 from( 7 select sum(case when str like 'CUST_NAME:%' then 1 else 0 end ) over(order by rn) sm,t.* 8 from TEST_EXT t 9 where str like 'CUST_NAME%' 10 or str like 'PROD_ID%' 11 or str like 'BILL_AMOUNT%' 12 or str like 'BILL_DATE%' 13 or str like 'GOODS_DELIVERED%' 14 ) 15 ) 16 where str not like 'CUST_NAME:%'; View created. SQL> select * from test_vu; COL1 COL2 COL3 COL4 ---------------------------------------- ------------------------- ------------------------------ ------------------------------ M/S ABC & COMPANY PROD_ID PR_05 STEAM_PIPE M/S ABC & COMPANY BILL_AMOUNT_ADVANCE 1245.07 WITH VAT M/S ABC & COMPANY BILL_DATE 17-03-2011 M/S ABC & COMPANY GOODS_DELIVERED_ON 20-03-2011 HAPPY CARGO M/S XYZ & COMPANY PROD_ID PR_09 PAPER_BAGS M/S XYZ & COMPANY BILL_AMOUNT_CREDIT 4000.07 WITHOUT VAT M/S XYZ & COMPANY BILL_DATE 17-03-2011 M/S XYZ & COMPANY GOODS_DELIVERED_ON 20-03-2011 SHIVAM COURIER 8 rows selected.
-
Error importing CSV files with "hidden" characters using the external Table
Hi people
Bit of a strange here.
Well, we are accustomed to the use of the external Table method to load data from CSV files in the database, but a recent event presented us a problem.
We have received some CSV files that "look like" regular CSV files, but Oracle will not load them.
When we looked at the CSV using VIM on a UNIX machine, we saw the following characters 'hidden' between each regular character in the file.
If a string that looks like this when opened in Excel/Wordpad etc.^@
Looks like this when exmained with VIM"TEST","TEXT"
Has anyone encountered this before?^@"^@T^@E^@S^@T^@"^@,^@"^@T^@E^@X^@T^@"
Thank you very much
Simon Gadd
Oracle 11g 11.2.0.1.0Hi Simon,.
^ @ represents the ZERO character (0x00).
So, most likely, you have a file encoded in Unicode.You need to specify the character set in the record specification (and if necessary the byte order mark), for example:
CREATE TABLE ext_table ( col1 VARCHAR2(10), col2 VARCHAR2(10) ) ORGANIZATION EXTERNAL ( TYPE ORACLE_LOADER DEFAULT DIRECTORY dump_dir ACCESS PARAMETERS ( RECORDS DELIMITED BY ' ' CHARACTERSET 'UTF16' FIELDS TERMINATED BY ',' ) LOCATION ('dump.csv') ) REJECT LIMIT UNLIMITED;
http://download.Oracle.com/docs/CD/E11882_01/server.112/e16536/et_params.htm#i1009499
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Add 'jump 1' to the definition of the external table after...?
I created several external new definitions from file table definitions, but when the 'production' files have been created have now a header row at the top which should be ignored for not to be taken as data.
Is there a way to "Edit" the file or definition the definition of the external table to add the mention "jump 1' without having to recreate the definition file to re-import the file and then recreate the external table?
I remember there is a place in the file import process that asks the number of lines to skip.
Thank you very much!!
-gary
P.S. This is indeed an OWB 10.1.0.4 environment but I guess he would hold even to 11g as well. :-)Hi Gary,.
It seems OWB10g R1 does not setting property to jump (for the creation of the external table or SQL * Loader control file).But for OWB10g R2 and later it is possible:
(1) in the Properties window of the file on the general tab, change "number of lines to skip.
(2) synchronize the corresponding external table and deployKind regards
Oleg -
the external table DDL contains the owbunuseX in the list of fields
Hello, we have defined an external table in design OWB11.1 Center, and we have defined columns such as "Field1, Field2,... field50', but when it was generated, we found owbunused0, owbunuse1... in the field of access settings list." Why the domain name is not same as the column in the external table name? Thank you.Hi Gary
OK, now I see. For a table outside right click on it in the Designer tree and click the option synchronize, you will then get a dialog box to sync and when you regenerate you should be good to go.
As other objects external Table may be related to another object, the file (in this case). So that you can make the external table if you change the file (in the same way with the mapping, when you modify a table, you can synchronize the table in and out of the mapping).
See you soon
David -
the external tables LKM: order of columns of evil?
I experience unexpected behavior with an external table Oracle LKM.
The table $ CAN (external) that is created has the columns in the right order. I know they are correct in the model. Because the external table is not defined in law, the IKM does not load anything.
This is the beginning of the create table script:
create the table ETL_USER. C$ _0SCSW_SOM_NBME
(
C1_SCHOOL_ID VARCHAR2 (6).
C2_TEST_DATE VARCHAR2 (10),
C3_SCORE NUMBER 4,
C7_ORDER_NUMBER VARCHAR2 (8).
C6_EXAM VARCHAR2 (50).
C5_ID VARCHAR2 (9).
C4_EXAMINEE VARCHAR2 (50)
)
You can even see c# _ fields are in the wrong order.
What is happening with this? :-)
JohnIn the integration Interfaces try to set columns on the staging area maps
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missing scenario of the external table file
Hi What is happening...
When we access the external table, and the file is not present... it throws an error? It simply returns the rows null?
If I know I will get 5 files a.txt b.txt, c.txt, d.txt, .txt, and then I can put in the location
LOCATION ('a.txt ',' b.txt ',' c.txt ',' d.txt', ' e.txt") creating the external table
If for example b.txt and c.txt are not present at the time of access, it will throw an error or it just shows me the records of a, d and e?
concerning
REDARaj,
If you have missing files, you select will return an error. So make sure that file, even if its empty.
You will see the following error
CREATE TABLE ext_tab ( empno CHAR (4), ename CHAR (20), job CHAR (20), deptno CHAR (2) ) ORGANIZATION EXTERNAL ( TYPE oracle_loader DEFAULT DIRECTORY EXPORT_DIR ACCESS PARAMETERS ( RECORDS DELIMITED BY NEWLINE BADFILE 'bad_%a_%p.bad' LOGFILE 'log_%a_%p.log' FIELDS TERMINATED BY ',' MISSING FIELD VALUES ARE NULL REJECT ROWS WITH ALL NULL FIELDS ( empno , ename , job , deptno) ) LOCATION ( 'emp.dat','emp.dat1' ) ); select * from ext_tab; ORA-29913: error in executing ODCIEXTTABLEOPEN callout ORA-29400: data cartridge error KUP-04040: file emp.dat1 in EXPORT_DIR not found --> emp.dat1 doesn't exist but emp.dat exists ORA-06512: at "SYS.ORACLE_LOADER", line 19
Concerning
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Problem with the format of the external tables
I am using the external Tables feature in Oracle.
The code I am using currently to create my table is (I cut down the list of fields for clarity).
But I get rejected folders when I select in the table due to the format of the HIRE date. The examples I've found suggest using a date format, change the code to:create table EMP_EXTERNAL2 (HIREDATE DATE ) organization external ( default directory EXT_TABLES access parameters ( records delimited by newline fields terminated by ',') location ('EMP.CSV') ) REJECT LIMIT 0 ;
When I run this I get ORA-00907: lack the closing parenthesis. What I'm doing wrong here (I'm under the code in SQL Developer incidentally)?create table EMP_EXTERNAL2 (HIREDATE DATE 'mm/dd/yyyy') organization external ( default directory EXT_TABLES access parameters ( records delimited by newline fields terminated by ',') location ('EMP.CSV') ) REJECT LIMIT 0 ;
Hello
Try this: -.
create table EMP_EXTERNAL2 (HIREDATE DATE ) organization external ( default directory EXT_TABLES access parameters ( records delimited by newline fields terminated by ',' ( HIREDATE DATE 'MM/DD/YYYY' )) location ('EMP.CSV') ) REJECT LIMIT 0
-Pavan Kumar N
-
The external table, question of double data type
Hello
We are the migration of 11g CL8MSWIN1251 to 12 c UTF8.
Now, we test the exteranl tables and that we've met the problem below.
We have a binary file (little endian) with fields of type double.
In 11g, it is very well analyzed, but in 12 c obtained ' ORA-29913: "" "".
In the Oracle docs, I found this paragraph, the last sentence of worries.
The DOUBLE clause indicates that the field is the same format that the C language, data type DOUBLE on the platform where the access driver is running. Use of the DATA IS {BIG |} LITTLE ENDIAN clause} can cause data to byte - swap before it is stored. Such data may not be portable between certain platforms.
Here is an example of a test that works on 11g, Oracle Enterprise linux 6.5. And get the error above 12 c 7.1 OEL
create ext_test table (balancing act)
Organization external
(type oracle_loader
the default directory dir_test
Access settings
( fixed 8 documents
data is little endian
string sizes are in bytes
language American
The territory America
nobadfile
nologfile
fields)
doublebalance)
)
location (dir_test:'1.bin'));
Select * of ext_test
BALANCE
----------
8960,07
773792,92
5000
3 . selected lines.
I don't know how to attach a file, here is the binary content of tray 1.
The problem is located.
Select * ext_test was made 11.2 customer connected to the database of 12 c.
When selecting using all the 12 client works very well.
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In the external table files forming themselves!
Hi all
I am facing a weird situation.
Few days back, DB has been improved to 11g 10g R2 and we are facing the situation of the training of logfiles, throw files have joined with external tables in the directory of the OS!
Without job is calling them and the only procedure in which these paintings have been used in the SELECT statement, are not running, even while these files form themselves and fill space in the BONE.
Here is the version information:
Oracle Database 11 g Enterprise Edition Release 11.2.0.3.0 - 64 bit Production
PL/SQL Release 11.2.0.3.0 - Production
"CORE 11.2.0.3.0 Production."
AMT for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
Please help in this regard.
Thank you.
Hi all
Problem has been identified.
11 g, dbms_stats.gather_stats_job runs all day until 22:00 and after every 4 hours on weekends.
He also tried gathering statistics for external tables given through the GATHER_TABLE_STATS procedure.
In the process, he joint/written in the log files.
Now, I think of locking statistics from this table, so that no stats will be gathered for what is just an EXTERNAL table which is used/populated only once a month.
Suggestions or comments?
Thank you.
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