derby

Sequence's current value advances to next 100 upon reconnection in derby

江枫思渺然 提交于 2019-11-29 15:35:09
I am having an issue with derby sequences with embedded database. When I first connect to the data base it gives me the correct sequence next value with the following statement. VALUES (NEXT VALUE FOR :seqNm) But when restart my desktop application, there by reconnecting to the database, the next value gives me the next hundredth value. It seems like derby uses some caching for preallocating the sequence numbers. e.g. if my sequence starts with 100, First connection to the data base gives me sequences as 100, 101, 102 and so on. Second connection to the data base gives me sequences as 200, 201

How to configure javadb in eclipse(part2)?

╄→尐↘猪︶ㄣ 提交于 2019-11-29 15:01:52
this is the continuation of my previous question How to configure javadb in eclipse? . I was able to made some changes on my code but now it is giving me this error -> ERROR: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect . Hope you guys can help me with this one. Here is my code: import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; public class Test { public static void main(String[] args) { try { Class.forName("org.apache.derby.jdbc.ClientDriver").newInstance();

updateLong not allowed in ResultSet

旧巷老猫 提交于 2019-11-29 12:06:11
I am trying to add a serial number in my table. Here is my method: public void reArrangeTrID(){ String parti = name.getText().toUpperCase(); long trid = 1; try{ String query="SELECT LONGDATE, TRID FROM PARTIACCOUNT WHERE PARTY= '"+parti+"' ORDER BY LONGDATE ASC "; conn = new connection().db(); stmtt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE); rs = stmtt.executeQuery(query); while(rs.next()) { long tr = rs.getLong("TRID"); rs.updateLong("TRID", trid); rs.updateRow(); trid++; jLabel9.setText("Arranging transactions... Please wait."); } } catch

Derby's handling of NULL values

半世苍凉 提交于 2019-11-29 11:32:58
I am new to Derby and I noticed that I face similar problems as when using the DB2 RDBMS as far as null values are concerned. The Derby documentation states, that a null value must have a type associated with it (something that DB2 finally got rid of in version 9.7): http://db.apache.org/derby/docs/10.7/ref/crefsqlj21305.html Now, I am trying to find a general solution to this problem here as this will be a part of my database abstraction library jOOQ . The below example just documents the problem. Think of any other (more complex) example. The following doesn't work: insert into T_AUTHOR ( ID

Using sql DATEADD function in java

拥有回忆 提交于 2019-11-29 11:06:58
When I run queries using DATEADD it seems that the database does not recognize this function. also when I just run select DATEADD(Month, -3, GETDATE()) I'm getting: Error code -1, SQL state 42X01: Syntax error: Encountered "<EOF>" at line 1, column 36. I added the JAR file from hsqldb-2.2.9 as you can see What am I missing here? Derby does not have a DATEADD function. You need to use the JDBC function timestampadd to achieve this: select {fn TIMESTAMPADD(SQL_TSI_MONTH, -3, CURRENT_TIMESTAMP)} from sysibm.sysdummy1 An alternative to using sysdummy1 is the ANSI standard values clause which works

Schema is not dropped on hbmddl.auto = create.drop

筅森魡賤 提交于 2019-11-29 10:36:38
I am using hbmddl.auto set to create in the hibernate configuration file and using it to connect to the derby database in network mode (not embedded, don't know if that is relevant). Here is my hibernate.cfg.xml <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <!-- Database connection settings --> <property name="connection.driver_class">org.apache.derby.jdbc.ClientDriver</property> <property name="connection.url">jdbc:derby://localhost:1527

Derby embedded database 'APPDATA' folder not found, Trying to create OS X application .app

被刻印的时光 ゝ 提交于 2019-11-29 08:43:53
I am trying to create a Mac OS X application from java desktopos.jar, where my application .jar file using derby embedded database APPDATA. It creates problem when, I'm createing a Mac OS X application .app Here is my connection method on java(Already working on .exe and setup-Windows & Linux) public static Connection getdataconnet() { Connection connect = null; try { Class.forName("org.apache.derby.jdbc.EmbeddedDriver"); connect = DriverManager.getConnection("jdbc:derby:APPDATA", "xxxx", "xxxxxxxxxxxxxxx"); } catch (ClassNotFoundException ex) { globalData.GlobalDataSetGet.OLD_USER = -1; ///

SQLNonTransientConnectionException: No current connection, in my application while interacting with Derby database

坚强是说给别人听的谎言 提交于 2019-11-29 06:57:49
I implemented derby data base in my application to save my data,and I am getting this exception in retrieval of result set form select query in Derby database. To establish the connection I use connection string as: I establish connection using this method: I declare this method in class Connection.java : public synchronized Connection createConnection() throws Exception { Connection rescon = null; try { if (this.dbuser == null) { rescon = DriverManager.getConnection(this.URI + ";create=true"); } else { rescon = DriverManager.getConnection(this.URI + ";create=true", this.dbuser, this.dbpass);

Delete all tables in Derby DB

感情迁移 提交于 2019-11-29 06:44:23
问题 How do i delete all the tables in the schema on Apache Derby DB using JDBC? 回答1: For actual code that does this, check CleanDatabaseTestSetup.java in the Derby test suite section of the Derby distribution. 回答2: Thanks are due to the blog: Step 1: Run the SQL statement, but don't forget to replace the schema name 'APP' with your your schema name in the 2 occurrences below: SELECT 'ALTER TABLE '||S.SCHEMANAME||'.'||T.TABLENAME||' DROP CONSTRAINT '||C.CONSTRAINTNAME||';' FROM SYS.SYSCONSTRAINTS

Am I crazy? Switching an established product from HSQLDB to Apache Derby

[亡魂溺海] 提交于 2019-11-29 06:35:31
问题 I have an established software product that uses HSQLDB as its internal settings database. Customer projects are stored in this database. Over the years, HSQLDB has served us reasonably well, but it has some stability/corruption issues that we've had to code circles around, and even then, we can't seem to protect ourselves from them completely. I'm considering changing internal databases. Doing this would be fairly painful from a development perspective, but corrupted databases (and lost data