Oracle and XMLType

Hi,
I have stored a instance of XMLDocument on my Oracle db.
I have used XMLType object (oracle.xml.parser.v2) to take it value.
XmlType Xml = XMLType.createXML(orset.getOPAQUE("Policy"));
So, I cast value to create a XMLDOM document
Document XmlDoc = (Document) Xml.getDOM();
But when I try to access XMLDOM this value occured :
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0xF532F2E
Function=qmxPrintXobToStreamWithPfx+0x2E
Library=C:\oracle\ora92\bin\orageneric9.dll
Current Java thread:
     at oracle.xdb.dom.XDBNode.toStringNative(Native Method)
     - locked <02A20FF0> (a oracle.xdb.dom.XDBElement)
     at oracle.xdb.dom.XDBNode.toString(XDBNode.java:510)
     at java.lang.String.valueOf(String.java:2177)
     at java.io.PrintStream.print(PrintStream.java:462)
     at firstimpl.FirstImpl.NodeRules(FirstImpl.java:338)
     at firstimpl.FirstImpl.NodeRegistration(FirstImpl.java:380)
     at firstimpl.FirstImpl.<init>(FirstImpl.java:127)
     at firstimpl.FirstImpl.main(FirstImpl.java:1307)
Thanks in advance,
Omar

Looks like a bug in orageneric9.dll
You should search Oracle's bug listings and patches.

Similar Messages

Trying to get UTF-8 data in and out of an oracle.xdb.XMLType

I need to be able to put unicode text into an oracle.xdb.XMLType and
then get it back out. I'm so close but it's still not quite working.
Here's what I'm doing...
// create a string with one unicode character (horizontalelipsis)
String xmlString = new String(
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"<utf8>\n" +
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// this is an oci8 connection
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// this works with no exceptions
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What I get from this is this...
<?xml version="1.0" encoding="UTF-8"?>
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In the above, [utf-8 bytes] represents the correctly encoded UTF-8 bytes that
were returned. But the output is missing the final closing bracket and the
newline at the end. It seems that no matter what second argument I give b.getBytes(),
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It seems that this code...
BLOB b = xmlType.getBlobVal(871);
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What am I doint wrong? I'm sure I'm missing something here.
Thanks much for your help.
Here's info about the environment I'm working in.
============================ SYSTEM INFORMATION ============================
SQL*Plus: Release 11.1.0.7.0 - Production on Fri May 15 11:54:34 2009
select * from nls_database_parameters
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select * from nls_database_parameters
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returns...
AL16UTF16
The operating system I'm working with is...
SunOS hostname 5.10 Generic_120011-14 sun4u sparc SUNW,Netra-T12

WE8ISO8859P1 does not support the ellipsis character. It is a WE8MSWIN1252 character. I wonder if your problem may have something to do with internal conversion to/from XML character reference (&#x2026). Unfortunately, I have no time to test. Please, try to use a simple loop and System.out.print to print all bytes of the return value of b.getBytes(1L, (int) b.length()). Also, check the value of b.length().
-- Sergiusz

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Hi,
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How do I get unicode characters out of an oracle.xdb.XMLType in Java?

The subject says it all. Something that should be simple and error free. Here's the code...
String xml = new String("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<x>\u2026</x>\n");
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I created analogic test case, and executed it with DB 11.1.0.7 (Linux x86), which seems to work fine.
Please refer to the execution procedure below:
* I used AL32UTF8 database.
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connect / as sysdba
create user testxml identified by testxml;
grant connect, resource to testxml;
connect testxml/testxml
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insert into testtab values (xmltype('<?xml version="1.0" encoding="UTF-8"?>'||chr(10)||'<x>'||unistr('\2026')||'</x>'||chr(10)));
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commit;
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import oracle.sql.*;
import oracle.jdbc.*;
import oracle.xdb.XMLType;
import java.util.*;
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export LD_LIBRARY_PATH=$ORACLE_HOME/lib
export CLASSPATH=.:$ORACLE_HOME/jdbc/lib/ojdbc5.jar:$ORACLE_HOME/jlib/orai18n.jar:$ORACLE_HOME/rdbms/jlib/xdb.jar:$ORACLE_HOME/lib/xmlparserv2.jar
javac QueryXMLType.java
java QueryXMLType
-> Then you will see U+2026 character (horizontal ellipsis) is properly output.
My Java code came from "Oracle XML DB Developer's Guide 11g Release 1 (11.1) Part Number B28369-04" with some modification of:
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http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28369/xdb11jav.htm#i1033914
and
- Example 18-23 Using XQuery with JDBC
http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28369/xdb_xquery.htm#CBAEEJDE

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Hi ,
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Please try and avoid duplicate posts...

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^
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jschell wrote:
nichele wrote:
jwenting wrote:
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if (conn != null) {
message = "Got Connection " + conn.toString() + ", ";
          conn.openProxySession(OracleConnection.PROXYTYPE_USER_NAME,prop);
stmt = conn.createStatement();
rst = stmt.executeQuery("SELECT username, server from v$session where username is not null");
while (rst.next()) {
message = "DS User: " + user + "; DB User: " + rst.getString(1) + "; Server: " + rst.getString(2);
rst.close();
rst = null;
stmt.close();
stmt = null;
conn.close(); // Return to connection pool
conn = null; // Make sure we don't close it twice
} catch (Exception e) {
e.printStackTrace();
} finally {
// Always make sure result sets and statements are closed,
// and the connection is returned to the pool
if (rst != null) {
try {
rst.close();
} catch (SQLException e) {
rst = null;
if (stmt != null) {
try {
stmt.close();
} catch (SQLException e) {
stmt = null;
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
conn = null;
public String getMessage() {
return message;
I'm using a utility to repeatedly call a JSP page that uses this class and displays the message variable. This utility allows me to specify the number of concurrent web requests and an overall number of requests to try. While that is running, I look at V$SESSION in Oracle and occassionaly, I will see a brief entry for app1 or adavey depending on the timing of my query and how far along the code has processed in this example. So it seems that I am only using one connection at a time and not a true connection pool.
Is it possible that I need to use the oci driver instead of the thin driver? I've looked at the javadoc for oci and the OCIConnectionPool has a setPoolConfig method to set initial, min and max connections. However, it appears that this can only be set via Java code and not as a parameter in my context.xml resource file. If I have to set it each time I get a database connection, it seems like it sort of defeats the purpose of having Tomcat maintain the connection pool for me and that I need to implement my own connection pool. I'm a newbie to this technology so I really don't want to go this route.
Any advice on setting up a proper connection pool that works with Tomcat and Oracle proxy sessions would be greatly appreciated.
Thanks,
Alan

Well I did some more experiments and I am able to at least create a connection pool within my example code:
package web;
import oracle.jdbc.pool.OracleDataSource;
import oracle.jdbc.OracleConnection;
import javax.naming.*;
import java.sql.SQLException;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Properties;
public class ConnectionPool {
String message = "Not Connected";
public void init() {
OracleConnection conn = null;
ResultSet rst = null;
Statement stmt = null;
try {
Context initContext = new InitialContext();
Context envContext = (Context) initContext.lookup("java:/comp/env");
OracleDataSource ds = (OracleDataSource) envContext.lookup("App1ConnectionPool");
message = "Here.";
     String user = ds.getUser();
if (envContext == null)
throw new Exception("Error: No Context");
if (ds == null)
throw new Exception("Error: No DataSource");
if (ds != null) {
message = "Trying to connect...";
boolean cache_enabled = ds.getConnectionCachingEnabled();
if (!cache_enabled){
ds.setConnectionCachingEnabled(true);
Properties cacheProps = new Properties();
cacheProps.put("InitialLimit","5");
     cacheProps.put("MinLimit","5");
cacheProps.put("MaxLimit","10");
ds.setConnectionCacheProperties(cacheProps);
          conn = (OracleConnection) ds.getConnection();
Properties prop = new Properties();
prop.put("PROXY_USER_NAME", "adavey/xyz");
if (conn != null) {
message = "Got Connection " + conn.toString() + ", ";
          conn.openProxySession(OracleConnection.PROXYTYPE_USER_NAME,prop);
stmt = conn.createStatement();
//rst = stmt.executeQuery("SELECT 'Success obtaining connection' FROM DUAL");
rst = stmt.executeQuery("SELECT user, SYS_CONTEXT ('USERENV', 'SESSION_USER') from dual");
while (rst.next()) {
message = "DS User: " + user + "; DB User: " + rst.getString(1) + "; sys_context: " + rst.getString(2);
message += "; Was cache enabled?: " + cache_enabled;
rst.close();
rst = null;
stmt.close();
stmt = null;
conn.close(OracleConnection.PROXY_SESSION); // Return to connection pool
conn = null; // Make sure we don't close it twice
} catch (Exception e) {
e.printStackTrace();
} finally {
// Always make sure result sets and statements are closed,
// and the connection is returned to the pool
if (rst != null) {
try {
rst.close();
} catch (SQLException e) {
rst = null;
if (stmt != null) {
try {
stmt.close();
} catch (SQLException e) {
stmt = null;
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
conn = null;
public String getMessage() {
return message;
In my context.xml file, I tried to specify the same Connection Cache Properties as attributes, but no luck:
<Context path="/App1" docBase="App1"
debug="5" reloadable="true" crossContext="true">
<Resource name="App1ConnectionPool" auth="Container"
type="oracle.jdbc.pool.OracleDataSource"
driverClassName="oracle.jdbc.OracleDriver"
factory="oracle.jdbc.pool.OracleDataSourceFactory"
url="jdbc:oracle:thin:@127.0.0.1:1521:oddjob"
user="app1" password="app1"
ConnectionCachingEnabled="1" MinLimit="5" MaxLimit="20"/>
</Context>
These attributes seemed to have no effect:
ConnectionCachingEnabled="1" ; also tried "true"
MinLimit="5"
MaxLimit="20"
So basically if I could find some way to get these attributes set within the context.xml file instead of my code, I would be a happy developer :-)
Oh well, it's almost Miller time here on the east coast. Maybe a few beers will help me find the solution I'm looking for.

I am new to using Oracle, and I am trying to create an add/insert stored pr

I am new to using Oracle, and I am trying to create an add/insert stored procedure for a table. The PROD_CD and PLAN_CD fields in my table can have no value (empty or null) Can you please check my code and let me know what I am doing wrong?
Table definition:
CREATE TABLE DCWEB.USER_PLAN_PREFERENCE
USERID VARCHAR2(40) NOT NULL,
PROD_CD VARCHAR2(9) NULL,
PLAN_CD VARCHAR2(9) NULL,
STATE_LST VARCHAR2(2) NOT NULL,
STATE_NM VARCHAR2(40) NOT NULL,
LST_UPDATE_TS TIMESTAMP(6) DEFAULT CURRENT_TIMESTAMP NOT NULL
ALTER TABLE DCWEB.USER_PLAN_PREFERENCE
ADD CONSTRAINT USER_PLAN_PREFERENCE_XPK PRIMARY KEY (USERID, PROD_CD, PLAN_CD);
-- Grant/Revoke object privileges
grant select, insert, update, delete on DCWEB.USER_PLAN_PREFERENCE to HIGGIB1;
Stored Procedure Definition:
procedure setUserPlanPref (
userid in varchar2,
prod_cd in varchar2,
plan_cd in varchar2,
state_lst in varchar2,
state_nm in varchar2
is
currentTimestamp timestamp := current_timestamp;
begin
insert into user_plan_preference (userid, prod_cd, plan_cd, state_lst, state_nm, lst_update_ts)
values (upper(userid), upper(prod_cd), upper(plan_cd), upper(state_lst), upper(state_nm), currentTimestamp);
commit;
exception
when dup_val_on_index then
begin
update user_plan_preference up set
up.userid = upper(userid),
up.prod_cd = upper(prod_cd),
up.plan_cd = upper(plan_cd),
up.state_lst = upper(state_lst),
up.state_nm = upper(state_nm),
up.lst_update_ts = currentTimestamp
where up.userid = upper(userid)
and up.prod_cd = upper(prod_cd)
and up.plan_cd = upper(plan_cd);
commit;
exception
when others then
rollback;
end;
when others then
rollback;
end;
end;
INPUT DATA
I am unable to insert a record calling the stored procedure with values: DCWEB4578, , 2P, CA, CALIFORNIA but when I change to the string "NULL", the insert succeeds. When I try to call the stored procedure to update the inserted record with values: DCWEB4578, "NULL", 2P, CO, COLORODO the update does not happen since I still see the original record in the table. Please advise. Thanks in advance for your help.

938319 wrote:
I am new to using OracleWelcome to the forum: please read the FAQ and forum sticky threads (if you haven't done so already), and ensure you've updated your profile with a real handle instead of "938319".
You'll get a faster, more effective response to your questions by including as much relevant information as possible upfront. This should include:
<li>Full APEX version
<li>Full DB/version/edition/host OS
<li>Web server architecture (EPG, OHS or APEX listener/host OS)
<li>Browser(s) and version(s) used
<li>Theme
<li>Template(s)
<li>Region/item type(s)
With APEX we're fortunate to have a great resource in apex.oracle.com where we can reproduce and share problems. Reproducing things there is the best way to troubleshoot most issues, especially those relating to layout and visual formatting. If you expect a detailed answer then it's appropriate for you to take on a significant part of the effort by getting as far as possible with an example of the problem on apex.oracle.com before asking for assistance with specific issues, which we can then see at first hand.
Thanks for posting the complete code, it makes it so much easier to understand the problem, but always post code wrapped in tags<tt>\...\</tt> tags to preserve formatting and special characters.
and I am trying to create an add/insert stored procedure for a table.Does this have anything to do with APEX, for which this is the forum? General SQL &amp PL/SQL matters should be directed to the {forum:id=75} forum.
The PROD_CD and PLAN_CD fields in my table can have no value (empty or null) Can you please check my code and let me know what I am doing wrong?This:
commit;
exception
when others then
rollback;
end;
when others then
rollback;Remove it all.
Commits should be issued by end user/client software on completion of a transaction. This means <tt>commit;</tt> should almost never appear in PL/SQL code. The main exception to this is in <tt>dbms_job/secheduler</tt> scheduled processes that have no client or UI. If this code is executed from APEX, then APEX issues more than enough commits anyway.
exceptions are just a way of ensuring your code is buggy.<tt>when others</tt> exceptions are just a way of ensuring your code is buggy.
INPUT DATA
I am unable to insert a record calling the stored procedure with values: DCWEB4578, , 2P, CA, CALIFORNIA but when I change to the string "NULL", the insert succeeds. When I try to call the stored procedure to update the inserted record with values: DCWEB4578, "NULL", 2P, CO, COLORODO the update does not happen since I still see the original record in the table. Please advise. Thanks in advance for your help.With the <tt>commit</tt>s and <tt>when others...</tt> removed from the code you'll have a chance of seeing what's actually happening. Note that the entire procedure can be simplified by writing as a MERGE</tt> statement.

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