in a DB2 trigger, I need to compare the value of a CLOB field. Something like: IF OLD_ROW.CLOB_FIELD != UPDATED_ROW.CLOB_FIELD but "!=" does not work for comparing CLOBs. What is the way to compare it? Edited to add: My trigger needs to do some action if the Clob field was changed during an update. This is the reason I need to comp...
When I try to display the contents of a LOB (large object) column in SQL*Plus, it is truncated. How do I display the whole thing? ...
As a follow-up to this question, I need help with the following scenario: In Oracle, given a simple data table: create table data ( id VARCHAR2(255), key VARCHAR2(255), value CLOB); I am using the following merge command: merge into data using ( select ? id, ? key, ? value fr...
Could some one give an idea about how to convert an excel file into a CLOB in oracle through JDBC. I would like to know how to covert excel file into a String using API available as part of JDK and the conversion from string to clob should be straight forward. Thanks in advance. If a similar question was already raised, kindly provide me...
Hi all, Hopefully someone can shed a little light on an issue that I'm currently having with an Oracle DB - I'm sure it's something simple!! I've managed to recreate this in a sample, so here is the DB structure: CREATE TABLE MyTable( ixMyTable NUMBER, clobData CLOB ) / CREATE OR REPLACE PACKAGE PKGTEST AS PROCEDURE DoSo...
I am trying to retrieve an oracle field with datatype clob into a VB array without reformating the retrieval SQL string (simply SELECT * FROM my_table). I am using an ADO recordset. The clob values are lost when I close the connection or do any other action with the recordset. How can I achieve this. ...
The naïve FOO = empty_clob() complains about incompatible types. I tried Googling, but (once again) had little success searching for help with Oracle. Thanks. ...
Arguing with a friend of mine — I am advocating git/hg, he is advocating CLOBs MySQL. What is your preference? ...
I am encountering an issue where Oracle is very slow when I attempt to delete rows from a table which contains two CLOB fields. The table has millions of rows, no constraints, and the deletes are based on the Primary Key. I have rebuilt indexes and recomputed statistics, to no avail. What can I do to improve the performance of delete...
I have the following query (column log is of type CLOB): UPDATE table SET log=? where id=? The query above works fine when using the setAsciiStream method to put a value longer than 4000 characters into the log column. But instead of replacing the value, I want to append it, hence my query looks like this: UPDATE table SET log=log||...
I have not used oracle before and I was to modify the clob data as it has my home phone number. But when I do select * from table shows CLOB and I cannot see the data. How can I see the data and how to I Update? I need the query. Thanks Jen ...
When I search the web for inserting BLOBs into Oracle database with jdbc thin driver, most of the webpages suggest a 3-step approach: insert empty_blob() value. select the row with for update. insert the real value. This works fine for me, here is an example: Connection oracleConnection = ... byte[] testArray = ... PreparedStateme...
I am running a J2EE application on Oracle Application Server 10.1.3.1 that will save to 2 Oracle databases (9i and 10g) within the same method in some cases. In order for this to take place, we are using XA drivers for both data sources and Hibernate to abstract the integration layer. Hibernate sessions are singletons and are owned by ...
I'm trying to insert a clob into Oracle. If I try this with an OdbcConnection it does not insert the data into the database. It returns 1 row affected and no errors but nothing is inserted into the database. It does work with an OracleConnection. However, using the Microsoft OracleClient makes our webservices often crash with an AccessV...
This is mainly just a "check my understanding" type of question. Here's my understanding of CLOBs and BLOBs as they work in Oracle: CLOBs are for text like XML, JSON, etc. You should not assume what encoding the database will store it as (at least in an application) as it will be converted to whatever encoding the database was config...
I'm trying to ALTER a table by adding a new CLOB column (on Oracle 10), but it's failing. Giving me an ORA-01735 error. Problem is I can't find out what in particular is wrong with my query by googling around so I figured I'd ask here just in case. Anyways my query is: ALTER TABLE "MYSCHEMA"."MYTABLE" ADD "ACOLUMN" CLOB(2048); And g...
The CLOB is XML data that is > 8k (sometimes > 32k). Any suggestions? ...
There's a lot one can find about this googling a bit but I haven't quite found a workable solution to this problem. Basically what I have is a big CLOB on a particular class that I want to have loaded on demand. The naive way to do this would be: class MyType { // ... @Basic(fetch=FetchType.LAZY) @Lob public String getBlob() ...
The Code: ResultSet rs = null; try { conn = getConnection(); stmt = conn.prepareStatement(sql); rs = stmt.executeQuery(); while (rs.next()) { Blob blob = rs.getBlob("text"); byte[] blobbytes = blob.getBytes(1, (int) blob.length()); String text = new String(blobbytes); The result: java.sql.SQLExc...
I have problem with sending long messages to Oracle JMS. My queue was created with: dbms_aqadm.CREATE_queue_table( queue_table => 'QUEUE_TABLE_TEST', queue_payload_type => 'SYS.AQ$_JMS_MESSAGE'); sys.dbms_aqadm.create_queue( queue_name => 'QTEST_OUT' , queue_table => 'QUEUE_TABLE_TEST' , queue_type => sys.dbms_aqadm.NO...