I am connecting to Oracle 9i using JDBC in my JSP/Servlets web pages. I am closing all my connections in Finally blocks.
Everything works great during the day with JDBC and Oracle.But after a Web crawler runs through our web server at 3 AM the next morning a v$session check shows several lines of JDBC Thin Client inactive status. find exactly what sql statement or program that could be causing the JDBC Thin Client to show up?
I have an urgent requirement to kill an existing session if a new session starts for the same user. I have been reading lot of blogs and posts on the above topic, but could clearly tell me how to do it.
I thought of putting a process in 101 page when login button is pressed to catch this and kill the old session.
We are using Apex 4.0/Oracle 10gR2/ Hp-Ux, We noticed that there is a process Running in Two Sessions that seems running since 3 Hours using 60% CPU,** 30% given below sql it executes in two Sessions!
declare function x return boolean is begin -- if instr(upper(:F4000_P4651_PLUG_SOURCE),'ORDER BY')>0 then
declare
l_position number := 0;
begin
loop
l_position := instr(upper(:F4000_P4651_PLUG_SOURCE),'ORDER BY ',l_position + 1) ;
exit when instr(upper(:F4000_P4651_PLUG_SOURCE),'ORDER BY ',l_position + 1) = 0 ;
[code]....
I'm trying to connect to multiple Oracle 10g databases (failover) over the JDBC thin client, and when I run the following, I get: java.sql. SQLException: Io exception: NL Exception was generated
connection = DriverManager.getConnection("jdbc:oracle:thin:@DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP) (HOST = dbdev) (PORT = 1521))) (CONNECT_DATA = (INSTANCE_NAME = orcldev)))", "scott", "tiger");
I eventually want to put multiple ADDRESSes in that string, but right now I'm trying to get it to work with just one! I've tried multiple variations of this, like changing INSTANCE_NAME to SID or SERVICE_NAME, and using the internal IP address for the HOST dbdev (see below). Here's the tnsnames.ora file used by SQL*Plus on the same client machine:
ORCLDEV.world =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.132)(PORT = 1521))
(CONNECT_DATA =
(SID = orcldev)
)
)
have a problem while i am trying to connect to database through JDBC here is my code,i am using oracle11g express edition import java.sql.
Connection;import java.sql.DriverManager;import java.sql.SQLException;import java.sql.Statement; public class connectiontoDB { public static void main(String[] args) throws Exception { // TODO Auto-generated method stub try{ Class.forName("oracle.jdbc.driver.OracleDriver"); Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL","citi","citi"); Statement stmt=con.createStatement(); stmt.executeUpdate("create table user(id number(10))"); System.out.println("connected to database successfully"); } catch(Exception e){ e.printStackTrace();
Instead of giving permission directly to v$session and gv$session to a developer, Is there any other way to do the same?
View 3 Replies View RelatedThe problem i mentioned in my last posting "CRS installation/PRIF-10: failed to initialize the cluster registry" was due to the fact i was using Redhat Linux 9 that seems to have some missing packages. I installed White Box RH 3 and everything worked fine.
if it's possible to connect to a 10g RAC database using the jdbc java thin client. the java thin client requires an ip, and database sid. I am running a two node cluster and i have two ip's and a service name that uses TAF option.
I connection to TimesTen as follow:
String url = "jdbc:timesten:direct:dsn=my_ttdb";
String username = "ADMINISTRATOR";
String password = "";
Connection connection = DriverManager.getConnection(TestTT.url, TestTT.username, TestTT.password);
I wonder if this JDBC Connection is a TCP/IP connection on the backend? If this is not a TCP/IP connection, how can I make a connection with TimesTen via TCP/IP protocol?
dsn:my_ttdb configuration likes:
[my_ttdb]
Driver=/home/tttest/TimesTen/tt1122/lib/libtten.so
DataStore=/home/tttest/ttdata/database/my_ttdb
LogDir=/home/tttest/ttdata/logs
PermSize=40
TempSize=32
DatabaseCharacterSet=ZHS16GBK
OracleNetServiceName=orcl
I have installed 2 node RAC -11gR2 on ORACLE VM Server 2.2.1.now, I want to give tnsentry to my dev team to use this RACDB going forward.I am using scan name in tnsnames.ora file. Also I have make scan name entry in /etc/hosts not in the DNS.
I have below entry in RACDB server...
RACDB =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = RWCORA-cluster-scan)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = racdb)
)
now just for testing purpose, I added this tnsentry in my machine to check the connectivity.I have to add scan name with IP address in /etc/hosts --. and try to connect sqlplus sys@rwcdb as sysdba --> not workingI have to add scan name with IP address , and two RAC VIPs (of both nodes) in /etc/hosts -- and try to connect sqlplus sys@rwcdb as sysdba --> then its working...but again SQL*Developer is not able to connect.
I have make below entry in my machine's /etc/hosts file:
10.40.0.51 RWCORARAC1-vip
10.40.0.52 RWCORARAC2-vip
10.40.0.50 RWCORA-cluster-scan
perfect link through which I can connect OCI, JDBC connection from client side.
I'm using PreparedStatement to execute a query with some parameters. in sql developer, it just spends 12 seconds but in jdbc, it's around 140 seconds.
I disabled "_optim_peek_user_binds" parameter already but it didn't work. alter session set "_optim_peek_user_binds"=false;
How to know the version of Oracle and JDBC of remote databases that is accessing my database through DBLInk.
For example I have a database A , B database is using my database Through a dblink.Now I want to know the version of oracle and jdbc which working on B.
Since JDK 6, DatabaseMetaData.getCrossReference contract is :Retrieves a description of the foreign key columns in the given foreign key table that reference the primary key or the columns representing a unique constraint of the parent table (could be the same or a different table). But the Oracle JDBC Driver executed query is :
SELECT
NULL AS pktable_cat,
p.owner as pktable_schem,
p.table_name as pktable_name,
pc.column_name as pkcolumn_name,
[code]...
Here are the relevant tables to the triggers I'm having trouble with.
create table profile
(
userID number(10),
uname varchar2(64),
email varchar2(32),
password varchar2(32),
date_of_birth date,
[code]...
Here's the triggers I currently have that doesn't work.
create or replace trigger DropAccount
after delete on profile
FOR EACH ROW
BEGIN
delete from groupMembership where (userID = :old.userID);
END;
The DropAccount trigger's purpose is to delete all the records from groupMembership that contains the userID of the person deleting his/her own account. It appears to work when I run the following statements in sqlplus:
delete from profile where (userID = '1');
select * from groupMembership where (userID = '1');
But when I try to delete an account through a java interface using JDBC I get the following error:
Machine Error: java.sql.SQLException: ORA-04091: table *****.GROUPMEMBERSHIP is mutating, trigger/function may not see it
ORA-06512: at "*****.DROPACCOUNT", line 2
ORA-04088: error during execution of trigger '*****.DROPACCOUNT'
The java function basically just executes a delete statement.
how to set connection property "oracle.jdbc.thinLogonCapability"
View 3 Replies View Relatedjava.sql.SQLException: ORA-04054: database link GMAIL.COM does not exist
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)
at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:207)
at oracle.jdbc.driver.T4CStatement.executeForRows(T4CStatement.java:946)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1169)
at oracle.jdbc.driver.OracleStatement.executeUpdateInternal(OracleStatement.java:1615)
at oracle.jdbc.driver.OracleStatement.executeUpdate(OracleStatement.java:1580)
at com.jdbc.pack.Lab1.main(Lab1.java:31)
Upgrading from 10.1.0.2 to 10.1.0.5. Enterprise Manager requires 'newest' version of Oracle JDBC drive.Downloaded what I believe to the correct file (classes12.jar). I'm unclear what to do with this, my readings have pointed me in the following direction:
1) copy to c:oracleproduct10.1.0db_1jre1.4.1in
2) extract
here is the problem...tried:
1) just clicking on it (nothing)
2) c:program filesjavajre1.6.0_03injavaw -jar classes12.jar
Error:
Failed to load Main-Class manfest atrribute from
c:oracleproduct10.1.0db_1jre1.4.1inclasses12.jar
Is my location correct, I've been hunting everywhere..making no progress.
I am not able to connect to ORACLE ODA 11g. but using sqlplus its getting connected with below credential.
URL------------------- jdbc:oracle:thin:sacblmdbuser/sacblmdbuser@10.66.12.229:1521:OVPINHA
Oracle JDBC driver loaded ok.
Unable to create connection
java.sql.SQLException: Io exception: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=186647296)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
The problem is that this connection errors when I try to connect using my SQuirreL client. My developers want to connecting using the SID or the SERVICE_NAME and by using the "New Method" syntax, not the "Old Method" syntax. According to the documentation the "New Method" syntax works with the SERVICE_NAME or the SID. The "Old Method" only works with the SID.
# Host name is vmwwin7634.na.SAS.com
# SID is sting2
# SERVICE_NAME is sting2.na.sas.com
PROBLEM using SID errors ==> jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521/sting2
THIS WORKS using SERVICE_NAME ==> jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521/sting2.na.sas.com
I am using SQuirreL Client version 3.4.0
# Here is the tnsnames.ora entry on the server.
STING2 =
(DESCRIPTION =
[code]...
# In this documentation it says, "On new syntax SERVICE may be a oracle service name or a SID."You can find this on the orafax wiki under JDBC#Thin_driver.
# I was able to connect with the "old method" using the SID only, SERVICE_NAME errors jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521:sting2.na.sas.com
(SQuirreL client error, "Unexpected Error occurred attempting to open an SQL connection.")
jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521:sting2 (this works)
# "New Method"
jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521/sting2.na.sas.com (this works)
jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521/sting2 (this errors)
(SQuirreL client error, "Unexpected Error occurred attempting to open an SQL connection.")
explain v$session and gv$session ;
View 3 Replies View RelatedI just upgraded my version of my oracle from 9 to 11.2g.When I tried to execute some queries in PL/SQL i keep getting an
annoying error : "ORA-01843 not a valid month."
I realized that if I execute the following query:alter session set NLS_DATE_LANGUAGE=AMERICAN;before every query that I want to execute, then it's executed fine.
I preformed the next queries:
1. select * from nls_database_parameters;
2. select * from nls_instance_parameters;
3. select * from nls_session_parameters;
and I saw that the fields in the "nls_session_parameters" vieware not derived from "nls_database_parameters" "nls_instance_parameters".
How can I derive the parameters from the instancedatabase view into the session view?I want that the "nls_date_language" parameter will always be 'AMERICAN'.
i read some articals of how to trace oracle sessions and i have some question
i use database 10g
trace vs event ??? different between them ????
how to trace individual statement i hope to give me this point in ex: due to i can't get the sql_id ,how to know the sql_is of specify statement??
i have application where user logs and perform manipulation operation such as insert and update on database table.some time its possible that same user login twice, i just want to hold one session until and unless dml operation perform by another session gets complete.how to accomplish this in database level .
View 6 Replies View RelatedHow to create a new session from a pl/sql. My requirement is that i will package which should run on new session and execute it.
BEGIN
A; --Calling package
B; --Calling package and this should run on new session.
C; --Calling Package
end;
Now when I will run the this plsql block, then A,C should execute will run in this package only but B will run separate session.Whole idea to have better performance. I heard we can use PRGMA AUTONOMOUS_TRANSACTION, but this is not working.
I have tables SUBJECT(subject_id, name, number) and PS(ps_id, subject_id, student_id). I need to select all from SUBJECT,subject_id and student_id from SP, joined by subject_id, where student_id needs to be read from session. I'm using asp.net with oracle database. How to get the value from the session.
View 2 Replies View RelatedI have a user in my oracle database, I would like to know details such as, how many times and by using which tools same user has got logged for past one week.
How do I do that. I have sql which shows the current session either he is logged in, if so then which application or not logged in. But I required the information for past one week How do I get those details.
query for number of users connected to the database:
select count(*) "Number of users Connected" from v$session where type='USER'; it produces 125
The following query is used to describe where and when the users are connected to the database.
set pages 500
set linesize 750
column box format a20
column username format a7
column program format a20
column os_user format a20
[code]...
It should produce 125. But its showing only 119 users. so around 6 users missing in the list. find why 6 users are not listed..
I'm issuing an alter session setting NLS_DATE_FORMAT in a C batch process right after the connection takes place. The format I specify is YYYYMMDDHH24MISS, this is the format used all over the process. In my development environment this works perfectly, but I've had problems in other environments.
CASE A development environment: The process works fine, $NLS_LANG and $NLS_DATE_FORMAT environment variables are not set.
CASE B Test envirnonment 1: The process failed.$NLS_LANG=American_America.WE8ISO8859P1 $NLS_DATE_FORMAT environment variable is not set.For some reason the $NLS_LANG variable seems to have more weight than the alter session command.. why? The process works fine after setting $NLS_DATE_FORMAT to the desired format.
CASE C Test envirnonment 2: The process failed. $NLS_LANG and $NLS_DATE_FORMAT environment variables are not set. Can't get it to work here. why?
I have two blocked session
select 'SID ' || l1.sid ||' is blocking ' || l2.sid blocking from v$lock l1, v$lock l2
where l1.block =1 and l2.request > 0 and l1.id1=l2.id1 and l1.id2=l2.id2;
BLOCKING
--------------------------------------------------------------------------------------------------
SID 142 is blocking 241
SQL> select sid,SERIAL# from v$session where sid in (142,241);
SID SERIAL#
---------- ----------
142 40643
241 16500
Now if I am trying to find what exactly getting executed under those two sid I get info for only one.
SQL> select a.SQL_ID,a.SQL_TEXT from v$sqltext a, v$session b where a.ADDRESS=b.SQL_ADDRESS and a.HASH_VALUE=b.SQL_HASH_VALUE and b.sid=241;
SQL_ID SQL_TEXT
------------- ----------------------------------------------------------------
d11mmj6wj4046 DELETE FROM OTABATCHEPTTABLE WHERE EPT_ID=0001471142180000002
BUT FOR OTHER SID I DONT HAVE ANY ENTRY IN SQLTEXT
SQL> select a.SQL_ID,a.SQL_TEXT from v$sqltext a, v$session b where a.ADDRESS=b.SQL_ADDRESS and a.HASH_VALUE=b.SQL_HASH_VALUE and b.sid=142;
no rows selected
FIND OUT WHAT EXACTLY ITS RUNNING AND WHY I AM NOT GETTING THE SQLTEXT FOR A SID?
Is there any way to identify who has compiled a specific PL / SQL stored program?
View 3 Replies View Related1. i want that if a form is opened in one user session. it will not be available to other users.
2. if a user executes a procedure. it should not be available to other users to execute until the first execution completes.