Java Database Connectivity (JDBC) is a Java standard that provides the interface for connecting from Java to relational databases.

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PostgreSQL 9.3 - Performance Issue: Counting table entries slower with jdbc postgres driver

I'm using PostgreSQL 9.3 and want to ask if it is possible to improve the performance of my queries based on the following database schema: CREATE TABLE "entities" ( "id" BIGSERIAL, "type" INT ...
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How does Sybase store datatime information?

We have a Sybase database that currently stores datetime values in some of the tables. If we move that server with the Sybase database to another country which is in another time zone, will the ...
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2k views

ORA-12516 but max_utilization not reaching limit

Our app began to raise ORA-12516, TNS:listener could not find available handler with matching protocol stack errors, and I'm trying to diagnose why. The workload has not changed, so I think we might ...
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jdbc+mysql: “Deadlock found when trying to get lock; try restarting transaction”

After recovering from a disk-full problem, I started getting these errors in my logs: java.sql.BatchUpdateException: Deadlock found when trying to get lock; try restarting transaction at com....
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LISTEN/NOTIFY pgconnection goes down java?

I am using PostgreSQL DB and applying it's LISTEN/NOTIFY functionality. So my listener is at my AS (Application Server) and I have triggers configured on my DB such that when CRUD operations are ...
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Connection to Azure SQL from Java

I try to connect to Azure SQL with MS JDBC driver: import java.sql.*; public class ExampleSQLJDBC { public static void main(String[] args) { // Setting. String connectionUrl = "...
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JDBC Statement vs. Prepared Statement SQL Injection

as far as I understand a "normal" JDBC Statement which is created via conn.createStatement() is prone to SQL-Injection. A prepared statement protects from such attacks. So why/when should I use a ...
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30 views

MySQL/JDBC: Can a commit on server get missed on client?

I am wondering about when conducting a transaction of one or two updates/inserts from a JDBC client to MySQL Server over the network... In the event of losing the network during the commit, can I get ...
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JDBC - maximum allowable cursors - how do I see my open statements?

I've got some resource leaking and I'm trying to find what's causing them. I think I have some statements or resultsets that aren't being closed properly. Is there any way to see all of the cursors ...
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Causing ORA errors in a program using JDBC. How can I find what's causing them?

So I'm building a java app to interface with the company's database. Whenever it causes an ORA error, it just prints something like the following to system output: ORA-00911: invalid character Is ...
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53 views

oracle DB connection - hostdef extension doesn't exist

I am trying to connect to an Oracle DB through ERwin, yet I keep getting this error message: I know that the DB exists, as my coworkers are accessing it. The Username and Password are also correct, ...
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JDBC pooling Oracle driver Socket read timed out

I run Java EE application on Glassfish server v3 together with Oracle 12 DB on the same machine under Windows Server 2012 64bit. I use latest ojdbc7 driver. Connection pool config: <jdbc-...
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310 views

MySQLSyntaxErrorException on ALTER TABLE … CONVERT TO … in MySQL Connector/J

Running Ubuntu 14.04 with mysql-connector-java-5.1.28 installed. Let's create a table: CREATE TABLE mytable (value1 VARCHAR(32000), value2 TEXT, value3 VARCHAR(1000), value4 VARCHAR(32000)) ...
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875 views

Does Postgresql support different transaction isolation per connection?

I just discovered that H2 doesn't support concurrent connections using different transaction isolation levels. Meaning, changing the transaction isolation of one connection affects all other ...
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java.sql.SQLException: Login failed for user 'sa'

I am having trouble connecting to my Microsoft SQL Server database through a jTDS connection: Connection conn = DriverManager.getConnection("jdbc:jtds:sqlserver://localhost:1433 /MnA;instance=...
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348 views

jdbc connection string ORACLE , integrated security

we are trying to configure Spotfire to use JDBC connection to ORACLE. We would like it to use integrated security (I call it Active Directory, TIBCO seems to like integrated security). Here is the ...
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89 views

Access operator added by extension inside a schema

I am writing an application that uses postgres. Each microservice uses its own schema inside the database. So connect to the database schema I use this jdbc string: jdbc:postgresql://${db.host}/${db....
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3answers
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prepared statements are not inserted

i am new to JDBC and trying following code. Could not find the error in it try{ Connection con = ConnectionProvider.getCon(); stmt=con.prepareStatement("insert into ...
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How to retrieve data from Postgresql index using java

I am writing an application for searching, using text search of Postgresql. I am a beginner in Database. I created a Gin index and i am trying to get data from it. My code is import java.sql....
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Why decrease the wait_timeout configuration parameter in MySQL?

Question I'm working on an application that uses a connection pool in Apache Tomcat to communicate with MySQL. I was wondering why would you want to use a smaller wait_timeout than the default of 28,...
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25 views

How monitor TEMP space allocation for a particular object type like Clob\Blob

I am new to Oracle and i wanted to know if there is a way to monitor Clob\Blob objects allocation in Oracle Temp Space. With JDBC 4.0, we have clob.free() and blob.free() methods and i want a way to ...
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836 views

No suitable driver found Orientdb jdbc driver

I have some problems with Orientdb driver for jdbc. i´m using Netbeans, i have include the library JDBC+OrientDB libraries (orientdb-jdbc-2.0.8-all.jar) in the directory and in netbeans, i have also ...
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Can't find sun.jdbc.odbc package in Java version 8 [closed]

I am trying to connect a database query to my class while I compile the package name sun.jdbc.odbc package but it is not found in Java version 8.
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monitoring sql execution perfomance of an application that makes use of SP_prepare

we have an application that makes heavy use of sp_prepare and sp_execute and we would like to start monitoring the execution plans of the sql. but this is made difficult by the use of sp_prepare ...
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444 views

No such column error jdbc

Suppose I have a table: SERVICE={SID,NAME,PORT} and with the help of a Java program, I want to select the SID of the known port with the help of a SQL query: Select SID from SERVICE ...
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693 views

How to IFNULL or COALESCE rewrite in a SQL query?

I there a way to rewrite a SQL query, so I can avoid IFNULL or COALESCE, because the HXTT DBF JDBC driver (supports SQL92) throws the following error.: Caused by: java.sql.SQLException: The aggregate ...
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37 views

Why isn't my includeThreadNamesAsStatementComment JDBC parameter working?

The JDBC API lists a includeThreadNamesAsStatementComment parameter that seems to indicate it will prefix all queries with the Java thread ID. I thought this would be useful in tying back DB activity ...
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351 views

Sybase ASE doing showplan for all requests

We have a strange situation where we are seeing showplan information in packets returned from a Sybase ASE 12.5 database server to a JDBC client. ie using tcpdump we see showplan output being sent ...
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1answer
5k views

What is the JDBC URL for Oracle's Data Guard Fast-Start Failover?

Currently I have... url= " jdbc:oracle:thin:@ ( DESCRIPTION= ( ADDRESS_LIST= (LOAD_BALANCE=OFF) (FAILOVER=ON) ( ADDRESS= (PROTOCOL=TCP) ...
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1answer
35 views

How do i connect to remote oracle isql server using ODBC?

I have access to a public oracle iSQL*Plus Release 9.2.0.1.0 server (ex url : 1xx.1xx.1x.200/isqlplus). I need to set up an ODBC Data Source using this isql server. Please help me to setup an ODBC ...
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45 views

Mariadb Prepared Statements stopped working, they were OK last week, I need help locating the issue

I have a number of stored procedures that were working perfectly well last week, but this week are causing me problems. The first problem is I seem to be getting the following: Mariadb SQL ...
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61 views

SQL Server doesn't send intermediate SSL certificates

I am connecting to SQL Server (2008 R2) over open Internet and properly encrypting the connection is essential. I have COMODO certificate with two intermediate certificates between root CA and server ...
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how to disable a mysql database for specific time

In my application there was an exception on run time when due to some network issue database connection not created and application closed. To trace this in my application at runtime I need to disable ...
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212 views

Postgres Public Synonym Issue

PostgreSQL ver 9.4.5. Linux OS. Application: Web Based Platform: App Server (java) --> jdbc call --> Database Server (PostgreSQL) I do know that PostgreSQL does not support the public ...
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Oracle Database keeps JDBC pooled connections on DRCP configured port as dedicated

Our developers have had an application in java that connects to the database and JDBC was controlling their connection pools. To comply with pooling requirements for our PHP developers, we enabled ...
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1answer
712 views

Tomcat7 JDBC connection pool -> Connection has been abandoned

I have the following configuration for the JDBC connection pool initialSize="2" minIdle="10" maxIdle="50" maxActive="100" maxWait="15000" jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor....
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JDBC Connection Reset Error

I'm trying to connect to my database from my application server using regular JDBC connection string and while connections are happening most of the times, say 10 times but the 11th time it hangs and ...
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1answer
242 views

JDBC Exception JZ0BE: BatchUpdateException: A user with System Administrator (SA) role must reconfigure the system to enable Java

I am using Sybase JDBC JConnect3 driver to insert large data in a table using Batch Insert feature of JDBC. I am preparing a batch of 100 inserts and executing the batch. But it is throwing below ...
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2answers
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What is wrong in my jdbc config pool?

I am using clearDB with max_connections plan being 40. This is my jdbc pool configuration: <bean id="dataSource" class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close" ...
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sqoop dir not found in hortronworks virtualbox

when trying to copy sqljdbc driver to /usr/lib/sqoop/lib it gives error cannot create regular file 'usr/lib/sqoop/lib/' No such File or Directory exist any idea what is missing? downloaded ...
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107 views

What is the best way to take backup for Remote DB Server [closed]

I am building a software, which will supports multiple database like MySQL, Oracle and PostgreSQL. These databases are installed on remote machines. i wanted to use java technology in a non-database ...
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16 views

JDBC - accessing a query, then querying that query

Sorry if the way I phrased that is confusing. I'm writing a program that acts kind of like a filter - it retrieves an answer to a query, counts the rows, then I want to do a slightly more narrow ...
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28 views

PostgreSQL updates hang when two servers involved

I have an update statement that works fine when only a single server is involved, but never completes when it comes from two servers. I'm connecting with JDBC 9.1-902 to a 9.3 database on CentOS 6.6. ...
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sql taking < 1 sec to run in sql developer, 37 on the application side

As the title says, we have a big discrepency between a sql query we're running from our java application (jdbc thin client) and the same query run in sql developer. I clear the cache of the query ...
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389 views

How do I connect to oracle apex server through JDBC ?

I have got a workspace in apex.oracle.com , Now , I want to connect to that database through JDBC from ubuntu-14.04 machine. please explain the steps , From where should I download the drivers and ...
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485 views

Install JDBC driver 4.0 for SQL Server

How can I confirm that JDBC is running and properly configured/registered in the system? I followed the installation instructions but I believe there has to be more to it than what the instructions ...
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203 views

How Oracle DB maintains client identification

I know in 'dedicated server' mode we have one user process for each client and pool of user process in 'shared server' mode. in either case How oracle maintains the client identification ? Please ...
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321 views

Improve performance on write-only table?

I am using MySQL 5.5 with innoDB. The basis of my server is Netty, JDBC and BoneCP. I have a log table that contains user inputs(HTTP header, request body etc). This table will only be read very ...
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545 views

SSPI handshake failed with error code 0x80090308 connection to Sql Server 2008 R2

I have a cross domain situation where the SQL Server 2008 R2 server sits in one domain and the client in another. There is a one-way trust between the domains. The SQL Server runs on a domain account. ...
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1answer
55 views

Can I write a Select query to update the data too

Can I write a Select query under a jdbc connection ,having a resultset object and which would update the records on just passing the select query them in my sql.