POL-3314 with BLOB columns

When trying to import images into BLOB columns, or read them back we get this error on WIN32 (surprisingly there is no problem at all on any of the windows mobile platforms like mobile 5 or ppc2003)
Does anyone have a fix/work around for this?
There is a bug 5880088 with a staus of 'Closed, not feasible to fix' on metalink, with reference to a note (waiting for this from Oracle as not accessible), but would be surprised if we are the only people wanting to store images in the database

work around is to select the data for update, rather than just select the data when wanting to retrieve BLOB data

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Error while importing a table with BLOB column

Hi,
I am having a table with BLOB column. When I export such a table it gets exported correctly, but when I import the same in different schema having different tablespace it throws error
IMP-00017: following statement failed with ORACLE error 959:
"CREATE TABLE "CMM_PARTY_DOC" ("PDOC_DOC_ID" VARCHAR2(10), "PDOC_PTY_ID" VAR"
"CHAR2(10), "PDOC_DOCDTL_ID" VARCHAR2(10), "PDOC_DOC_DESC" VARCHAR2(100), "P"
"DOC_DOC_DTL_DESC" VARCHAR2(100), "PDOC_RCVD_YN" VARCHAR2(1), "PDOC_UPLOAD_D"
"ATA" BLOB, "PDOC_UPD_USER" VARCHAR2(10), "PDOC_UPD_DATE" DATE, "PDOC_CRE_US"
"ER" VARCHAR2(10) NOT NULL ENABLE, "PDOC_CRE_DATE" DATE NOT NULL ENABLE) PC"
"TFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 STORAGE(INITIAL 65536 FREELISTS"
" 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "TS_AGIMSAPPOLOLIVE030"
"4" LOGGING NOCOMPRESS LOB ("PDOC_UPLOAD_DATA") STORE AS (TABLESPACE "TS_AG"
"IMSAPPOLOLIVE0304" ENABLE STORAGE IN ROW CHUNK 8192 PCTVERSION 10 NOCACHE L"
"OGGING STORAGE(INITIAL 65536 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEF"
"AULT))"
IMP-00003: ORACLE error 959 encountered
ORA-00959: tablespace 'TS_AGIMSAPPOLOLIVE0304' does not exist
I used the import command as follows :
imp <user/pwd@conn> file=<dmpfile.dmp> fromuser=<fromuser> touser=<touser> log=<logfile.log>
What can I do so that this table gets imported correctly?
Also tell me "whether the BLOB is stored in different tablespace than the default tablespace of the user?"
Thanks in advance.

Hello,
U can either
1) create a tablespace with the same name in destination where you are trying to import.
2) get the ddl of the table, modify the tablespace name to reflect the existing tablespace name in destination and run the ddl in the destination database, and run your import command with option ignore=y--> which will ignore all the create errors.
Regards,
Vinay

Sample insert into table with BLOB column

This is my first opportunity to work with BLOB columns. I was wondering if anyone had some sample code that shows the loading of a blob column and inserted into the table with a blob column.
I have to produce a report (including crlf) and place it into a blob column. The user will download the report at a later time.
Any suggestions / code samples are greatly appreciated!!!!

You can enable string binding in TopLink.
login.useStringBinding(int size);
or you could enable binding in general,
login.bindAllParameters();

Table with BLOB column re-partitioning

Currently I have a table with a blob column Z partitioned on Column X I want to re-partition the table on Column Y is there a quick way of doing this.
INSERT INTO SELECT * has limitations on the blob size I guess.
Can someone explain this?
Edited by: user10229350 on Mar 1, 2010 7:36 AM

I am using hash partitioning looks like split partition doesn't apply for hash partition:
"The SPLIT PARTITION clause of the ALTER TABLE or ALTER INDEX statement is used to redistribute the contents of a partition into two new partitions. Consider doing this when a partition becomes too large and causes backup, recovery, or maintenance operations to take a long time to complete. You can also use the SPLIT PARTITION clause to redistribute the I/O load.
This clause cannot be used for hash partitions or subpartitions."

How to read/write a binary file from/to a table with BLOB column

I have create a table with a column of data type BLOB.
I can read/write an IMAGE file from/to the column of the table using:
READ_IMAGE_FILE
WRITE_IMAGE_FILE
How can I do the same for other binary files, e.g. aaaa.zip?

There is a package procedure dbms_lob.readblobfromfile to read BLOB's from file.
http://download-east.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_lob.htm#sthref3583
To write a BLOB to file you can use a Java procedure (pre Oracle 9i R2) or utl_file.put_raw (there is no dbms_lob.writelobtofile).
http://asktom.oracle.com/pls/ask/f?p=4950:8:1559124855641433424::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:6379798216275

How to know exact size of table with blob column

I have a table with one BLOB column. I ran this query.
select bytes/1024/1024 from user_segments where segment_name='GMSSP_REQUEST_TEMP_FILES'
(user_segments is a view)
it gave me 0.125
It means size of table is 0.125. I have uploaded 3 files to this table. Each of them is of 5 mb. After that I check size of table. but result was same. i.e 0.125.
Can any body tell me how to know exact amount of space consumed by files. I am expecting following result
size should be (5+5+5+0.125)MB
Any help is appreciated.
Thanks.
Akie

http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/statviews_1092.htm#i1581211
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:266215435203#993030200346552097

Calculate size of table with BLOB column

Hello,
when trying to calculate the occupied space for a table, I'm using DBA_SEGMENTS, which works fine as long as the table does not have a BLOB column.
As far as I can tell, the size of the BLOB data is stored with the SEGMENT_TYPE = 'LOBSEGMENT', but I cannot find a view that tells me which DBA_SEGMENT row belongs to the BLOB column in the table I'm checking.
To give you an example:
select sum(BYTES)
from DBA_SEGMENTS
where owner = user
and segment_name = 'MY_TABLE'
group by SEGMENT_NAMEreturns 262144
running:
SELECT sum(length(blob_column))
FROM my_tablereturns 821333
There are entries in DBA_SEGMENTS for my user with the type LOBSEGMENT, but I cannot find a way to map the correct DBA_SEGMENTS row to the table I am checking.
Any ideas?
I'm using Oracle 10.2.0.3.0 on Redhat
Thanks in advance
Thomas

http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/statviews_1092.htm#i1581211
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:266215435203#993030200346552097

Uploading a file (.doc, .xls, .txt) into an Oracle table with BLOB column

Hello All :
I have been trying to figure out for a simple code I can use in my JSP to upload a file (of any format) into an Oracle table with a BLOB column type. I have gone through a lot of existing forums but couldnot find a simple code (that doesnot use Servlet, for eg.) to implement this piece.
Thanks a lot for your help !!

Hi.
First of all to put a file into Oracle you need to get the array of bytes byte[] for that file. For this use for example FileInputStream.
After you get the byte array try to use this code:
        try {
            Connection conn = myGetDBConnection();
            PreparedStatement pstmt = conn.prepareStatement("INSERT INTO table1 (content) VALUES(?)");
            byte[] content = myGetFileAsBytes();
            if (content != null) {
                pstmt.setBinaryStream(0, new ByteArrayInputStream(content), content.length);
            pstmt.close();
            conn.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }or instead of using ByteArrayInputStream try pstmt.setBinaryStream(0, new FileInputStream(yourFile), getFileSize());Hope this will help...
regards, Victor Letunovsky

Problem with blob column index created using Oracle Text.

Hi,
I'm running Oracle Database 10g 10.2.0.1.0 standard edition one, on windows server 2003 R2 x64.
I have a table with a blob column which contains pdf document.
Then, I create an index using the following script so that I can do fulltext search using Oracle Text.
CREATE INDEX DMCS.T_DMCS_FILE_DF_FILE_IDX ON DMCS.T_DMCS_FILE
(DF_FILE)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS('DATASTORE CTXSYS.DEFAULT_DATASTORE');
However, the index is not searchable and I check the following tables created by database for my index and found them to be empty as well !!
DR$T_DMCS_FILE_DF_FILE_IDX$I
DR$T_DMCS_FILE_DF_FILE_IDX$K
DR$T_DMCS_FILE_DF_FILE_IDX$N
DR$T_DMCS_FILE_DF_FILE_IDX$R
I wonder what's wrong with it.
My user has been granted the ctx_app role and I have other tables that store plain text which I use Oracle Text are fine. I even output the blob column and save as pdf file and they are fine.
However the database seems like not indexing my blob column although the index can be created without error.
Please advise.
Really appreciate anyone who can help.
Thank you.

The situation is I have already loaded a few pdf document into the table's blob column.
After I create the Oracle text index on this blob column, I find the system generated index tables listed in my earlier posting are empty, except for the 4th table.
Normally we'll see words inside the table where those are the words indexed by oracle text on my document.
As a result, no matter how i search for the index using select statement with contains operator, it will not give me any result.
I feel weird why the blob is not indexed. The content of the blob are actually valid because I tested this by export the content back to pdf and I can still view and search within the pdf.
Regards,
Jap.

ORA-03237 when creating table with BLOB columns on Oracle 9i

I am playing with my new Oracle 9i database. I am trying to copy
tables from my 8.1.6 db. Three tables won't create due to this
new message. The 9i documentation says it's soemthing to do with
freelist groups but my DBA says he hasn't set up any.
The tablespace is one of these newfangled locally managed
tablespaces (predetermined size 8k).
I can create these tables if I change the BLOB column to datatype
VARCHAR2(4000).
I have raised this through the usual channels, but I thought I'd
try this site as well.
Cheers, APC

victor_shostak wrote:
Figured, Virtual Columns work only for Binary XML.They are only supported, currently, for Binary XML.

Migrating a table with BLOB column from one db to another

Hello everybody,
I have two databases D1 and D2. Each database contains table T1 (same structure in both databases). T has a BLOB column and is populated in D1. I have to move all the data from T database D1 into T database D2.
D1 and D2 are located on different machines. T in D1 is a huge table (milions of records). What is the best solution to migrate the T data between the 2 databases?
Any help will be appreciated.
Thank you in advance.
daniela

Depending on the version of the database you have, you could use transportable tablespaces.
http://download-east.oracle.com/docs/cd/B10501_01/server.920/a96524/c04space.htm#9370

Import table with BLOB Column

hi
I would like to export table "A" containing data in BLOB column and then import the same table into another user's table "B".
i got the following error
ORA-06502PL/SQL: numeric or value error

When you export from one user's table A to another user table B. you should have privilege to import from the user X.
Do this
exp system/password file=filename.dmp log=filename.log tables=A owner=X
exp scott/tiger file=emp.dmp tables=(emp,dept)
imp scott/tiger file=emp.dmp full=yes
imp system/password file=filename.dmp log=filename1.log fromuser=X touser=Y tables=A
Now table A is imported into Y schema. drop the table B(if you do not need old table B) then rename table A to B.
If you need old data in Table B then generate insert statements for the data and insert them into new table B

Resource busy with Blob column

I am using a SELECT...FOR UPDATE statement to modify the contents of a BLOB column and am finding that the row lock stays around until I close the JDBC connection. Has anyone else seen this?
Many thanks

If you wish to release the row lock sooner, you could manually issue a commit or rollback. Of course, whether that is appropriate depends on your application logic.
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by kiml ():
I am using a SELECT...FOR UPDATE statement to modify the contents of a BLOB column and am finding that the row lock stays around until I close the JDBC connection. Has anyone else seen this?
Many thanks<HR></BLOCKQUOTE>
null

CTAS with BLOB column very slow

Hi,
I am creating a new table from backup table having BLOB type of data.
Table size for backup table is approx 250G (along with lob segment) and I am creating new table with predicate selectivity of 110 GB.
Query used is "CREATE TABLE CLAIM AS SELECT /*+ PARALLEL(CLAIM_bkp_04,16) */ * FROM CWS_CLAIM_WORK_bkp_04 WHERE pxobjClass <> 'Claim-Controller' or pyStatusWork <> 'Resolved-Completed' ;
Even after using parallel degree of 16 for CTAS, peformance is very very slow.
Can anyone tell what's the reason for this behavior..
Best Regards
Naveen

>
ID| PARENT_ID|OPERATION |OBJECT_NAME | COST|CARDINALITY
----------|----------|----------------------------------------|------------------------------|----------|-----------
0| |CREATE TABLE STATEMENT | | 47410|
1| 0| LOAD AS SELECT | | |
2| 1| PX COORDINATOR | | |
3| 2| PX SEND QC (RANDOM) |:TQ10000 | 24388| 4623495
4| 3| PX BLOCK ITERATOR | | 24388| 4623495
5| 4| TABLE ACCESS FULL |CWS_CLAIM_WORK_BKP_04 | 24388| 4623495it might be faster WITHOUT using Parallel

Insert into blob column from form6i

Dear all,
I have a question....
I need to develop an application with form6i which gets the filename and path from user and inserts the content of the file in a table with blob column...
the files may be in any format...How can I do it in oracle form 6i..our database is 10g...
If anybody has a sample please send me :[email protected]
ThanX
Farnaz

If you want to insert a string and next convert to BLOB, you use the next SQL
PreparedStatement ps = connectionObject.prepareStatement("INSERT INTO TEST_BLOB(NO,STR) VALUES(?,TO_BLOB(?))");and next
ps.setInt(1, "1");
ps.setString(2,"sample string here");

POL-3314 with BLOB columns

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