Oracle and/or jsp learning hosting?
Umm... I'm sorry if this is the wrong place to post this question, but I'm a web programmer, wanting to learn more about jsp and oracle web development (among other things,) and I was wondering if anyone knew of places where I could get a learning website for either or both without breaking the bank? Thank you in advance, Chris K.
Also consider the number of users anticipated. If you expect hundreds of users, >>avoid Forms. In Forms thread counts are maxed out too quickly, number of >>sessions is limited, and resource utilization is higher. 1.are you sure about the number of users restriction , i know that Oracle might be the best database for supporting a huge number of users it support hundreds and hundreds of users and that why large organization use Oracle , and if this is not true then what will be the advantege for using oracle forms over JSP pages
2.and what you mean by ''In Forms thread counts are maxed out too quickly''
3.and as i know that the number of seesion has to do with the database it self not with the forms that run at the client side,to be honest it is the first time i know that Oracle does no support a huge number of user.
Thanks alot
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How to store and retrieve blob data type in/from oracle database using JSP
how to store and retrieve blob data type in/from oracle database using JSP and not using servlet
thanksJSP? Why?
start here: [http://java.sun.com/developer/onlineTraining/JSPIntro/contents.html] -
Free - J2EE and Web Services Workshops by Oracle and TheServerSide
Oracle and TheServerSide are pleased to invite you to a free SOA developer workshop. This one-day event includes technical sessions, an install fest, hands-on labs, and a hacker's contest. (Attendees must bring their own laptops to participate in the labs and contest.) Topics will include:
* Overview of Service Oriented Architectures (SOA)
Discover what it means to move to SOA and learn about key SOA technologies, including J2EE 1.4, Web Services, BPEL, EJB, JSP, and Struts.
* Constructing the Services Layer
Develop back-end business services using the latest J2EE technologies.
* From Web Services to Business Processes
Learn about key J2EE 1.4 technologies used to implement Web services, and find out how to build Web services-based business processes using the industry standard Business Process Execution Language (BPEL).
* User Interfaces for SOA
Use Struts and design patterns to bind business services to user interfaces.
The hands-on labs take developers through the different stages of building an SOA based application. Developers must bring their own laptop to participate in the workshop, and they will get CDs with the software they need to develop and run the labs.
Hackers Event - Social and Coding Competition
Following the workshop, attendees will be treated to free pizza and beer and will have the opportunity to compete for additional prizes. Experts from TheServerSide will join the session to discuss SOA best practices.
Oracle Developer Days are free, but space is limited, so register now.
Locations, Dates, and registration at:
http://www.oracle.com/go/?&Src=1587968&Act=43
Here is what some developers had to say about the events that ran last year:
http://otn.oracle.com/events/otnworkshop/testimonials.htmlHere are the cities and dates for this developer roadshow. The workshops in Redwood Shores and New York are almost full, the others have more seats available, so check out http://otn.oracle.com/odd and register soon.
Redwood Shores, CA - 4 Aug
New York, NY - 10 Aug
Dallas, TX - 12 Aug
Dearnborn, MI - 17 Aug
Miami, FL - 19 Aug
Denver, CO - 24 Aug
Atlanta, GA - 26 Aug -
J2EE and Web Services Workshops by Oracle and TheServerSide
Oracle and TheServerSide are pleased to invite you to a free SOA developer workshop. This one-day event includes technical sessions, an install fest, hands-on labs, and a hacker's contest. (Attendees must bring their own laptops to participate in the labs and contest.) Topics will include:
* Overview of Service Oriented Architectures (SOA)
Discover what it means to move to SOA and learn about key SOA technologies, including J2EE 1.4, Web Services, BPEL, EJB, JSP, and Struts.
* Constructing the Services Layer
Develop back-end business services using the latest J2EE technologies.
* From Web Services to Business Processes
Learn about key J2EE 1.4 technologies used to implement Web services, and find out how to build Web services-based business processes using the industry standard Business Process Execution Language (BPEL).
* User Interfaces for SOA
Use Struts and design patterns to bind business services to user interfaces.
The hands-on labs take developers through the different stages of building an SOA based application. Developers must bring their own laptop to participate in the workshop, and they will get CDs with the software they need to develop and run the labs.
Hackers Event - Social and Coding Competition
Following the workshop, attendees will be treated to free pizza and beer and will have the opportunity to compete for additional prizes. Experts from TheServerSide will join the session to discuss SOA best practices.
Oracle Developer Days are free, but space is limited, so register now.
Locations, Dates, and registration at:
http://www.oracle.com/go/?&Src=1587968&Act=43
Here is what some developers had to say about the events that ran last year:
http://otn.oracle.com/events/otnworkshop/testimonials.htmlHere are the cities and dates for this developer roadshow. The workshops in Redwood Shores and New York are almost full, the others have more seats available, so check out http://otn.oracle.com/odd and register soon.
Redwood Shores, CA - 4 Aug
New York, NY - 10 Aug
Dallas, TX - 12 Aug
Dearnborn, MI - 17 Aug
Miami, FL - 19 Aug
Denver, CO - 24 Aug
Atlanta, GA - 26 Aug -
Question regarding Oracle and Linux on VMware
Hello,
I carefuly read the paper on Oracle and Linux on Your Own VMware and I'm missing a point.
The paper explains how to start a cluster on a single host in a single Linux VM on VMware.
So, there are 2 instances of Oracle 10g DB on the same Linux VM inside VMware. What does allow that?
Is it possible to run 2 instances on any (single) Linux box, or is VMware required? If VMware is not required, why this complication in that paper? If VMware is required, what does it bring that make running 2 cluster instances on the same host possible?
Many thanks for your help.userLynx wrote:
I have an oracle database (10.2) and I have a query that needs to compare data on the Oracle database to data on a MS SQL server DB. I'm using a DB Link between the two databases.
How would I compare the date fields?
I have a table that has a date as one of the fields and I need to restrict the records where the date is equal to the date on SQL, however the formats are different:
My query is as follows:
SELECT mkt_css_name,
pmv_rqst_corp_id,
pmv_rqst_source,
'G',
pmv_css_acct_no,
eq.start_date
FROM power_move@cmdt,
enroll_que@tcis eq,
marketer@cmdt
WHERE eq.css_account_number = pmv_css_acct_no
AND eq.requestor_type = 'P'
AND eq.status IN ('A','P','G','S')
AND eq.marketer_id = mkt_seq_no
AND pmv_service_type IN ('G','D')
And Pmv_Gas_Mktr_No = Eq.Marketer_Id
AND pmv_received_timestamp= eq.enroll_date ;
The problem is that the date is stored in Oracle in the following format: DD-MON-YYYY and in SQL as 'YYYY-DD-MM HH:MI:SSSSSS'
for example: Data in Oracle would be 27-JAN-2012 and in SQL as 2012-01-27 00:00:00.000
I get an error when I compile.
How do you reconcile the formats when the syntax is different between databases?
Thanks, SeanDATE datatypes do NOT have any "format"
DATE datatype is stored in internal binary notation.
use TO_CHAR to display, present & compare the DATE datatypes -
How do I set miminum # of connections for pool with Oracle and Tomcat?
Hi,
I can't seem to find any attribute to initialize the number of connections for my connection pool. Here is my current context.xml file under my /App1 directory:
<Context path="/App1" docBase="App1"
debug="5" reloadable="true" crossContext="true">
<Resource name="App1ConnectionPool" auth="Container"
type="oracle.jdbc.pool.OracleDataSource"
driverClassName="oracle.jdbc.driver.OracleDriver"
factory="oracle.jdbc.pool.OracleDataSourceFactory"
url="jdbc:oracle:thin:@127.0.0.1:1521:oddjob"
user="app1" password="app1" />
</Context>
I've been googling and reading forums, but haven't found a way to establish the minimum number of connections. I've tried all sorts of parameters like InitialLimit, MinLimit, MinActive, etc, with no success.
Here is some sample code that I am testing:
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...";
conn = (OracleConnection) ds.getConnection();
Properties prop = new Properties();
prop.put("PROXY_USER_NAME", "adavey/xxx");
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,
AlanWell 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 & 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. -
Differences between Oracle and Oracle Rdb.
My background is mainly VMS, and so I have grown up (since 1984) with DEC Rdb (now Oracle Rdb). I am starting to get into Oracle, and therefore, starting to learn the subtle differences. With this in mind could someone educate me as to the default transaction type when using SQLPLUS (using interactive SQL it's READ WRITE). What is the initialization file called for SQLPLUS, and are there equivalents to the logical names SQLINI, SQL$DATABASE, SQL$EDIT, etc.
If there is someone out there with experience of both, may be you could ease my pain by posting your pearls of wisdom, or tips, here to help me along the way.OK, I'll try a few, having moved from VAX/Rdb to Oracle 10 years ago.
Oracle's default transaction state is read-write, isolation level READ COMITTED. This means you generally don't need to do a "SET TRANSACTION" at the start of a transaction, and certainly don't need to keep doing commit;set transaction to see the latest values.
In read-write transactions Oracle does not lock rows on read to maintain consistency in the way Rdb used to. Usually people use SELECT ... FOR UPDATE, or update directly (without a separate select) rather than using isolation SERIALIZABLE, which is the equivalent of Rdb's default.
A script login.sql is executed at the start of a SQLPLUS session. On Unix, it looks for this in the current directory, and the home directory.
On UNIX, SQL$DATABASE becomes "export TWO_TASK=dbname"
On Windows, SQL$DATABASE becomes "set LOCAL=dbname"
I strongly recommend Tom Kyte's Expert one-on-one Oracle book to help your transition, and his web site asktom.oracle.com
Good luck, and welcome. -
is there any plugin to view jsps in Oracle BPM studio 10.3.2. Thanks in advance.
Go to Window-->Preferences-->General-->Editors-->File associations and in File Types click on Add and put *.jsp and in the next option add the editor you want, that can be an internal program or an external program.
After that association when opening a jsp in the studio it will be opened with that editor.
HTH -
How to restore the oracle backup to the other host
Hi all:
I used the command 'brbackup' to backup the database on the host A by online type . I had installed a new sap on the host B and there is the same hostname, oracle version, os version, sap version, SID, system number and directory in the host A and host B.Now I want to restore the backup of the host A oralce to the host B ,how can I do ? please tell me the details for the steps.
THAKS
the sap envirement: AIX 5.3 + ORACLE 10.2.0.2 + SAP CRM 5.2Check the following link:node restore and recovery
http://help.sap.com/saphelp_nw04/helpdata/en/39/45583eb05a4644e10000000a114084/frameset.htm
Regards,
Ashutosh -
I used Sql Server and .Net for developing application to now. I switch to Oracle and Java recently. I have installed Oracle 11g. What I need to start developing aoolication with Java and Oracle?
Has Oracle a graphical interface like MS Sql Server? how can I install them? What Developing Environment You suggest for Java? I am familiar with eclipse.user987274 wrote:
I used Sql Server and .Net for developing application to now. Which means 1 year or 5?
I switch to Oracle and Java recently. I have installed Oracle 11g. What I need to start developing aoolication with Java and Oracle? Starting basics.
1. Learn basics of java
2. Learn basics of Oracle
3. Learn JDBC which allows you to code in java and talk to Oracle.
Do not attempt step 3 until you have complete 1 and 2.
Has Oracle a graphical interface like MS Sql Server? That would be a Oracle question rather than a java question. There are other forums on this site specific to Oracle.
Myself I just use sqlplus.
how can I install them? Huh? Just like you install anything else.
1. Acquire appropriate software
2. Read documentation
3. Install
4. Look for post install options that might be relevant.
What Developing Environment You suggest for Java? I am familiar with eclipse.I presume that you mean that you know eclipse exists for java rather than that you have used it before.
Since you are probably used to using Visual Studio, then you probably want an IDE. Eclipse will suffice for that. -
Differences between being an Oracle and SQL DBA?
Sorry to post this here, but I need so insight and don't know any Oracle DBA's. As posted here before, Ive been a MSSQL DBA for about 6 years and want to broaden my skill set. One of my ideas is to learn Oracle. For the record, I do realize that my teaching myself wont open up hundreds or Oracle DBA jobs, but Im hoping to land a "mostly SQL with a little Oracle" gig somewhere. Ive successfully installed Oracle on Linux, and now need to make a decision on if to proceed or not. Any insights from people that have worked with both platforms would be especially helpful, but all thoughts are definately welcomed. So now my questions:
1. Why are Oracle DBA's paid more than SQL DBA's? It must be something skill specific? What is it?
2. Will this trend likely continue as newer versions of Oracle are released that are easier to manage?
3. With that extra cash, is there typically more hours involved? I dont mind working a bit extra if needed, but I do have little ones that I'd like to watch grow up.
4. Are there typically differences in the job responsibilities between Oracle and SQL DBA's? The changing trend these days is to include DTS/ Analysis Services/ Reporting Services all under the DBA umbrella. Do Oracle DBA's typically have the same type of stuff?
5. If I do continue down this path, it would probably be far easier for me to learn on Windows than *nix. Is this a valid thing to do, or should I not bother? I've been told that it's still worth while, but have real reservations about needing to tell an interviewer "I've only used it on Windows".
I realize this is all subject to personal experiences and feelings, but don't know how else to figure this stuff out without asking.
TIA, ChrisRBy SQL DBA, I assume you mean SQL Server DBA. SQL is 'Structure Query Language' and is not a specific product, no matter how much the Microsoft community might wish to usurp the term. <g>
There are mauy reasons for this, including the Oracle vs Microsoft mindset that has been nurtured over the years. For many managers, 'Oracle is solid, reliable and expensive' whereas 'Microsoft SQL Server is cheap, not necessarily as reliable, but good enough'.
Whether true or not is irrelevant, these are direct quotes from some of my customers.
My remaining answers are based on my personal experience, and may only be valid in my area. (Yes, things are VERY regional.)
>
1. Why are Oracle DBA's paid more than SQL DBA's? It
must be something skill specific? What is it? Often, an Oracle DBA is a trained DBA. SQL Server DBAs seem to be decent developers who are [or have been stuck] doing DBA work.
I find that SQL Server DBAs who are truly capable of handling all of {backup, recovery, troubleshooting, security, development, disaster recovery, audit, locking, configuration, RAID and disk, upgrade, migration and porting (to name a few)} competently are generally paid comparable to Oracle DBAs.
However, I also find there are extremely few true SQL Server DBAs.
>
2. Will this trend likely continue as newer versions
of Oracle are released that are easier to manage?Yes.
Although Oracle administration is easier, DBAs are now expected to handle more instances, and adminstrator across more servers, and are expected to be competent in more of the feature capabilities.
There is NO reduction in the amount of work. The 'easier to manage' stuff simply means being more efficient.
>
3. With that extra cash, is there typically more
hours involved? I dont mind working a bit extra if
needed, but I do have little ones that I'd like to
watch grow up.
A blatant observation: Oracle tends to be used in more mission critical environments, and SQL Server in department support environments. Mission critical tends to be watched closer, and require 'fast aqnd competent' response. Pager duty seems to be more prevelant in Oracle positions - department server crashes can be handled by a reboot in the morning.
4. Are there typically differences in the job
responsibilities between Oracle and SQL DBA's? The
changing trend these days is to include DTS/ Analysis
Services/ Reporting Services all under the DBA
umbrella. Do Oracle DBA's typically have the same
type of stuff?Many SQL Server 'DBAs' I know personally are 'super developers' but not really DBAs.
Observation: DBAs are often very 'repeatable' detail oriented, whereas developers are 'get it done' oriented. Very different mentailties, both very important.
>
5. If I do continue down this path, it would probably
be far easier for me to learn on Windows than *nix.
Is this a valid thing to do, or should I not bother?
I've been told that it's still worth while, but have
real reservations about needing to tell an
interviewer "I've only used it on Windows". Oracle is quite operating system independant. Pick your poison.
SQL Server is quite operating system dependant. Some else picks your poison.
There is no shame in saying to an interviewer that you have a strong competence in Oracle but only experience in Windows. A good potential employer will often provide appropriate additional training to a suitable, honest, candidate.
>
I realize this is all subject to personal experiences
and feelings, but don't know how else to figure this
stuff out without asking.
I strongly encourage you to contact locals rather than ask in these forums. Check whether there is an Oracle User Group close to you, and meet and chat with the members. Ditto for SQL Server. (You can find out by contacting respective sales reps.)
The above is NOT a dismissal of SQL Server capabiltites or SQL Server DBAs. (Some close friends are extremely competent with SQL Server.) It is just a set of personal observations. -
Heterogeneous connection between Oracle and Postgres.
Hi All,
I'm trying to make an heterogeneous connection between Oracle and Postgres since few days but i still having this error : "lost RPC connection".
First of all : I'm using Windows 7, Oracle 10g and PostgreSQL 8.4.
I have done the following operations :
1) Create a System DNS named "PG". (Test connection is OK)
2) Create the file "initPG.ora" in "$ORACLE_HOME/hs/admin" :
# This is a sample agent init file that contains the HS parameters that are
# needed for an ODBC Agent.
# HS init parameters
HS_FDS_CONNECT_INFO = PG
HS_FDS_TRACE_LEVEL = ON
# Environment variables required for the non-Oracle system
#set <envvar>=<value>
3) Configure the file "listener.ora" (in "$ORACLE_HOME/NETWORK/ADMIN") :
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = PG)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = hsodbc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(ADDRESS = (PROTOCOL = TCP)(HOST = Cédric-PC)(PORT = 1521))
DEFAULT_SERVICE_LISTENER = (XE)
4) Configure the file "tnsnames.ora" (in "$ORACLE_HOME/NETWORK/ADMIN") :
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = Cédric-PC)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
PG =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = tcp)(HOST = Cédric-PC)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = PG)
(HS = OK)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
5) Finally, i create my DB-Link and test it :
CREATE DATABASE LINK "CENTRALE_POSTGRES" CONNECT TO "user_login" IDENTIFIED BY "user_password" USING 'PG';
SELECT * FROM "dual"@CENTRALE_POSTGRES;
I got this error :
ORA-03135 : lost RPC connection.
As you can see, i have activated the trace level (HS_FDS_TRACE_LEVEL = ON), but the directory "$ORACLE_HOME/NETWORK/trace" still empty.
Any ideas ?
Regardsthe tnsnames.ora alias PG is wrong - you need to have 2 closing brackets after the SERVICE_NAME so that HS=OK is outside of the CONNECT_DATA like:
PG =
<space>(DESCRIPTION =
<space><space>(ADDRESS = (PROTOCOL = tcp)(HOST = Cédric-PC)(PORT = 1521))
<space><space>(CONNECT_DATA =
<space><space><space>(SERVICE_NAME = PG))
<space><space>(HS = OK)
<space>)
Please be also aware HSODBC up to release 10.2 has been desupported since March 2008 and it was replaced by its follow up product DG4ODBC V11 -
Hetrogeneoues connection between Oracle and SQL server
Hi ,
I am having Issues in Making Heterogeneous DB link between Oracle Xe and sql server .
Here is the scenario-
My Oracle and ms SQL 2003 are running on same machine(windows 2003) ,
I have followed this link and reached till 5 but I am not able to tnsping the SQLSERVER DNS entry .
http://www.databasejournal.com/features/oracle/article.php/3442661/Making-a-Connection-from-Oracle-to-SQL-Server.htm
Below are my lintener and tnsfiles
LISTENER.ORA
===========================================================================================================================================================
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\oraclexe\app\oracle\product\11.2.0\server\bin\OraClr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
LISTENERSQL =
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY))
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1522))
SID_LIST_LISTENERSQL=
(SID_LIST=
(SID_DESC =
(SID_NAME = SQLSRVRDBLNK)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = hsodbc)
===========================================================================================================================================================
TNSNAMES.ORA
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = testenviroment)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
SQLSRVRDBLNK =
(DESCRIPTION=
(ADDRESS= (PROTOCOL=tcp)(HOST=localhost)(PORT=1522))
(CONNECT_DATA=(SID=SQLSRVRDBLNK)
(HS=OK)
========================================================================================================================================================
Listner Status
C:\oraclexe\app\oracle\product\11.2.0\server\network\ADMIN>lsnrctl status LISTENERSQL
LSNRCTL for 32-bit Windows: Version 11.2.0.2.0 - Production on 19-JUL-2013 13:15:59
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY))
STATUS of the LISTENER
Alias LISTENERSQL
Version TNSLSNR for 32-bit Windows: Version 11.2.0.2.0 - Production
Start Date 19-JUL-2013 12:17:39
Uptime 0 days 0 hr. 58 min. 24 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\listener.ora
Listener Log File C:\oraclexe\app\oracle\diag\tnslsnr\testenviroment\listenersql\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\PNPKEYipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1522)))
Services Summary...
Service "SQLSRVRDBLNK" has 1 instance(s).
Instance "SQLSRVRDBLNK", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
=========================================================================================================================================================
Now If I try to Tnsping SQL heterogeneous connection , i get
C:\oraclexe\app\oracle\product\11.2.0\server\network\ADMIN>tnsping SQLSRVRDBLNK
TNS Ping Utility for 32-bit Windows: Version 11.2.0.2.0 - Production on 19-JUL-2013 13:17:47
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION=
TNS-12533: TNS:illegal ADDRESS parameters
Need Help , please suggest
Thanks,
ManishHi ,
Thanks for the update I have changed the Listener as suggested , now my Listener File is
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = SQLSRVRDBLNK)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = hsodbc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\oraclexe\app\oracle\product\11.2.0\server\bin\OraClr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST=
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.60.146)(PORT = 1521))
(ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY))
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1522)))
========================================================================================================================
and tns entry
SQLSRVRDBLNK =
(DESCRIPTION=
(ADDRESS= (PROTOCOL= TCP)(HOST=192.168.60.146)(PORT=1522))
(CONNECT_DATA=(SID=SQLSRVRDBLNK)
(HS=OK)
========================================================================================================================
Restarted the listener
C:\Documents and Settings\Administrator>lsnrctl start LISTENER
LSNRCTL for 32-bit Windows: Version 11.2.0.2.0 - Production on 20-JUL-2013 12:27:38
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Starting tnslsnr: please wait...
TNSLSNR for 32-bit Windows: Version 11.2.0.2.0 - Production
System parameter file is C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\listener.ora
Log messages written to C:\oraclexe\app\oracle\diag\tnslsnr\testenviroment\listener\alert\log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.60.146)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\PNPKEYipc)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1522)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.2.0.2.0 - Production
Start Date 20-JUL-2013 12:27:44
Uptime 0 days 0 hr. 0 min. 5 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\listener.ora
Listener Log File C:\oraclexe\app\oracle\diag\tnslsnr\testenviroment\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.60.146)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\PNPKEYipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1522)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "SQLSRVRDBLNK" has 1 instance(s).
Instance "SQLSRVRDBLNK", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
========================================================================================================================
Still Getting the same Error
C:\Documents and Settings\Administrator>tnsping SQLSRVRDBLNK
TNS Ping Utility for 32-bit Windows: Version 11.2.0.2.0 - Production on 20-JUL-2013 12:27:52
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION=
TNS-12533: TNS:illegal ADDRESS parameters
C:\Documents and Settings\Administrator>
========================================================================================================================
Do we need to change any thing in sqlnet.ora file for heterogeneous connection?
Thanks ,
Manish -
How to create database link between oracle and SQL Server
Hello Everyone,
Here i have Oracle Database 9i and SQL Server 2005 databases.
I have some tables in sql server db and i want to access from Oracle.
How to create a database link between these two servers
Thanks,Thanks for Everyone,
I was struggle with this almost 10 days....
I created Database link from Oracle to SQL Server
Now it is fine.........
Here i am giving my servers configuration and proceedure how i created the db link...@
Using Generic Connectivity (HSODBC) we can create db link between Oracle and SQL server.
Machine (1)
DB Version : Oracle 9.2.0.7.0
Operating System : HP-UX Itanuim 64 11.23
IP : 192.168.0.31
Host : abcdbt
Machine (2)
Version : SQL Server 2005
Operating System : Windows server 2003 x86
IP : 192.168.0.175
Host : SQLDEV1
User/PW : sa/abc@123! (Connect to database)
Database : SQLTEST (exsisting)
Table : T (“ T “ is the table existing in SQLTEST database with 10 rows)
Prerequisites in Machine (2):
a) Oracle 10g software
b) User account to access SQL Server database (sa/abc@123!)
c) Existing SQL Server Database (SQLTEST)
d) Tables (testing purpose) (T)
Steps:
1) Install Oracle 10.2.0.1 (Only SW,No need of database) *(Machine 2)*
2) Create a DSN where your windows Oracle 10g SW resides *(Machine 2)*
Control panel >> Administrative Tools >> Data Source (ODBC) >> System DSN ADD
You can follow this link also.....
http://www.databasejournal.com/features/oracle/article.php/3442661/Making-a-Connection-from-Oracle-to-SQL-Server.htm
I created DSN as
DSN name : SQLTEST
User : SA/abc@123! (Existing user account)
Host : 192.168.0.175 (machine 2)
Already I have 1 database in SQL Server with the name SQLTEST
You can create DSN with different name also (not same as db name also)
3) Create a hsodbc init file in $ORACLE_HOME\hs\admin *(Machine 2)*
Create init<DSN NAME> file
Ex: initSQLTEST
Copy inithsodbc to initSQLTEST
And edit
initSQLTEST file
HS_FDS_CONNECT_INFO = SQLTEST <DSN NAME>*
HS_FDS_TRACE_LEVEL = OFF*
save the file....@
4) Configure Listener.ora *(Machine 2)*
LISTENER_NEW =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.175)(PORT = 1525))
SID_LIST_LISTENER_NEW =
(SID_LIST =
(SID_DESC =
(SID_NAME = SQLTEST) *+< Here SQLTEST is DSN NAME >+*
(ORACLE_HOME = G:\oracle 10g\oracle\product\10.2.0\db_1)
(PROGRAM = hsodbc))
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = G:\oracle 10g\oracle\product\10.2.0\db_1)
(PROGRAM = extproc) )
:> lsnrctl start LISTENER_NEW
5) Configure tnsname.ora *(Machine 2)*
SQLTEST11 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.175)(PORT = 1525))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = SQLTEST))
(HS=OK)
:> tnsping SQLTEST11
If No errors then conti….
6) Configure a file *(Machine 1)*
Cd $TNS_ADMIN ($ORACLE_HOME/network/admin)
Create a file
$ vi TEST_abcdbt_ifile.ora
something=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST =192.168.0.175) (PORT=1525))
(CONNECT_DATA=
(SID=SQLTEST))
(HS=OK)
$ tnsping something
$ sqlplus system/manager
Your connected to Oracle database *(machine 1)*
create database link xyz connect to “sa” identified by “abc@123!” using ‘SOMETHING’;
select * from t@xyz;10 rows selected.
Thanks,
Edited by: ram5424 on Feb 10, 2010 7:24 PM
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