clob

Oracle 10g: Can CLOB data lengths be less than 4,000?

本小妞迷上赌 提交于 2019-12-01 07:50:00
问题 We have three databases: dev, staging, and production. We do all our coding in the dev environment. We then push all our code and database changes to staging so the client can see how it works in a live environment. After they sign off, we do the final deployment to the production environment. Now, about these CLOB columns: When using desc and/or querying the all_tab_columns view for the dev database, CLOBs show a data length of 4,000. However, in the staging and production databases, data

Create CLOB from long string using JDBC

筅森魡賤 提交于 2019-12-01 04:47:29
I have the following query: select id from table1 where some_func(?) = 1; where some_func is a function which allows its arguments to be either VARCHAR2 or CLOB, and ? is some string, which could be really long. I am trying to use the following code to bind variables: stmt.setObject(i+1, obj); but in case of string.length() > 4000 I get the following error: java.sql.SQLException: ORA-01460: unimplemented or unreasonable conversion requested for an obvious reason: the VARCHAR2 size limit is 4000 characters. I then tried to use the following code: if(obj instanceof String && ((String) obj)

Error- ORA-22835: Buffer too small for CLOB to CHAR or BLOB to RAW conversion

孤者浪人 提交于 2019-12-01 03:37:15
I am attempting to read a blob message and display it as a variable in one of my procedures, but am getting the error below: Error - ORA-22835: Buffer too small for CLOB to CHAR or BLOB to RAW conversion (actual: 9923, maximum: 2000) I have googled and found a suggestion to trim the blob message as below, but would rather display the complete blob message as a string. UTL_RAW.CAST_TO_VARCHAR2(dbms_lob.substr(variable_name,2000,1)) How can I display the complete message? Is there a setting on either the database or procedure level that I can change? I got this worked by using the option

Spring 数据库处理Clob/Blob大对象

旧巷老猫 提交于 2019-12-01 03:20:04
#概述 使用Spring的时候需求上难免说需要存储一下几种类型: 文本 图片 二进制 处理对象 Spring 支持通过 LobCreator/LobHandler 进行处理大对象 BLOB byte[] — getBlobAsBytes and setBlobAsBytes InputStream — getBlobAsBinaryStream and setBlobAsBinaryStream CLOB String — getClobAsString and setClobAsString InputStream — getClobAsAsciiStream and setClobAsAsciiStream Reader — getClobAsCharacterStream and setClobAsCharacterStream 入口 看到方法名就知道,在调用前会被执行一遍,刚好看看这个对象的实现,只有 AbstractLobCreatingPreparedStatementCallback ,接下来看看源码,看看有没有例子。 就是我想要的 使用例子 final File blobIn = new File("spring2004.jpg"); final InputStream blobIs = new FileInputStream(blobIn); final File

Converting from String to Clob using setString() not working

ぐ巨炮叔叔 提交于 2019-12-01 02:25:47
问题 I am trying to convert a String into a Clob to store in a database. I have the following code: Clob clob = connection.createClob(); System.out.println("clob before setting: " + clob); clob.setString(1,"Test string" ); System.out.println("clob after setting: " + clob); System.out.println("clob back to string: " + clob.toString()); When I run this the Clob is not being set, the output is as follows: clob before setting: org.apache.derby.impl.jdbc.EmbedClob@1f5483e clob after setting: org.apache

Error- ORA-22835: Buffer too small for CLOB to CHAR or BLOB to RAW conversion

ε祈祈猫儿з 提交于 2019-12-01 00:05:08
问题 I am attempting to read a blob message and display it as a variable in one of my procedures, but am getting the error below: Error - ORA-22835: Buffer too small for CLOB to CHAR or BLOB to RAW conversion (actual: 9923, maximum: 2000) I have googled and found a suggestion to trim the blob message as below, but would rather display the complete blob message as a string. UTL_RAW.CAST_TO_VARCHAR2(dbms_lob.substr(variable_name,2000,1)) How can I display the complete message? Is there a setting on

Poor performance getting clob field from Oracle in .Net

断了今生、忘了曾经 提交于 2019-11-30 17:01:36
问题 I am trying to read a clob column from oracle in .Net and observing very poor performance and lots of network traffic. I have tried ODP+OCI, devArt+OCI ways to access the data with the same results - it takes around 20 seconds to get 1000 rows in a data reader and read the clob value for each row. Examining wireshark traces, it turns out that every time I try to read the clob field for a single row in the reader, there are additional multiple tcp packets sent between client and server. So for

Oracle CLOB can't insert beyond 4000 character?

你说的曾经没有我的故事 提交于 2019-11-30 13:23:32
How to insert more than 4000 characters to CLOB type column? --create test table s create table s ( a clob ); insert into s values('>4000 char') Results in an error: ORA-01704:the string too long. When I want to insert string >4000 for one time, how to do it? Is it be possible? When I read the Oracle reference, CLOB can save max 4GB(Gigabyte)? The maximum for one time insertion is 4000 characters (the maximum string literal in Oracle). However you can use the lob function dbms_lob.append() to append chunks of (maximum) 4000 characters to the clob: CREATE TABLE don (x clob); DECLARE l_clob clob

ORA-00932: inconsistent datatypes: expected - got CLOB

混江龙づ霸主 提交于 2019-11-30 11:42:51
问题 Considering that TEST_SCRIPT is a CLOB why when I run this simple query from SQL*PLUS on Oracle, I get the error: ORA-00932: inconsistent datatypes: expected - got CLOB I have been reading a lot of questions about the same error but none of those is running a direct query from SQLPLUS UPDATE IMS_TEST SET TEST_Category = 'just testing' WHERE TEST_SCRIPT = 'something' AND ID = '10000239' Full example: SQL> create table ims_test( 2 test_category varchar2(30), 3 test_script clob, 4 id varchar2(30

What is the alternate for deprecated Hibernate.createClob(Reader reader, int length)

寵の児 提交于 2019-11-30 09:20:59
问题 Seems like Hibernate.createClob(Reader reader, int length) is deprecated in version 3.6.x And it suggests to use Use LobHelper.createClob(Reader, long) instead. But LobHelper is an interface not a class. Is there any alternate for static method Hibernate.createClob(Reader reader, int length) ? 回答1: I was using the createBlob(bytes[]) from that class. I created a new class and the following method public static Blob createBlob(byte[] bytes) { return NonContextualLobCreator.INSTANCE.wrap