Detecting changes in database

Hi,
I connected to MySQL database using JDBC, displayed all data I need. But now I would like to detect changes in database (for example when somebody in network insert new row, I need get an event and then read data from database again).
Did any body know how to detect changes in database???
Thank you.
Petr

your question is too general, there are many ways of doing this. what is it you're doing?

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Facing problem while changing the database at runtime

hi everyone,
Before posting this thread, i have gone through the various posts addressing the problem....but still iam unable to get the solution for this problem.
The report has been generated in one system, so the database properties (connection string....) are hardcoded in the report file...
Now when iam trying to change the database, it is still connecting to the system where the report file was created.
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 IConnectionInfo connectionInfo = null;
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 String TRUSTED_CONNECTION = "false";
 String SERVER_TYPE = "JDBC (JNDI)";
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 String DATABASE_DLL = "crdb_jdbc.dll";
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 // String TABLE_NAME_QUALIFIER = "new_table_name";
 // String SERVER_NAME = "new_server_name";
 // String CONNECTION_STRING = "new_connection_string";
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 // method generic
 // This workflow may not work in all scenarios and should likely be
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 propertyBag = new PropertyBag();
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 propertyBag.put("Use JDBC", USE_JDBC);
 propertyBag.put("Database DLL",DATABASE_DLL );
 propertyBag.put("JNDI Datasource Name",JNDI_DATASOURCE_NAME );
 propertyBag.put("Connection URL", CONNECTION_URL);
 propertyBag.put("Database Class Name", DATABASE_CLASS_NAME);
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 connectionInfo.setKind(ConnectionInfoKind.SQL);
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Also i tried with replaceConnection() method...........it displayed the report, but with not column names and data
need help regarding.......
Edited by: abhishek.c1984 on Jun 25, 2009 10:02 AM

In the report i have two tables.............so before changing the database properties for each table iam printing their names.
The names are dispalyed correctly.......but once i set the table location...i.e through the following method..
clientDoc.getDatabaseController().setTableLocation(tables.getTable(i),newTable);
every time i can see only one table i.e. properties are set for the first table ........and each time the properties are being set for the first table only.....i dont no what is happening to the rest of the tables..
I have posted the method in the above post.....can any one please trace out the problem
Note: when i comment the following code, i can see all the tables
clientDoc.getDatabaseController().setTableLocation(tables.getTable(i),newTable);
when i uncomment it, i can see only first table repeating every time...
Edited by: abhishek.c1984 on Jun 25, 2009 1:03 PM

Changing the Database Name

Hi Gurus
I am using oracle 10g on Windows platform. The issue is I need to change my database name. When i gone through the Oracle docs I found there is an utility called 'DBNEWID' . But not getting a clear cut idea. Since my DB is So critical anybody please tell me the exact steps to change the DB-Name.
Thanks & Cheers
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Changing Only the Database Name
C:\>SQLPLUS/NOLOG
SQL*Plus: Release 10.1.0.2.0 - Production on Tue Aug 22 10:54:38 2006
Copyright (c) 1982, 2004, Oracle. All rights reserved.
SQL> CONN / AS SYSDBA
Connected.
SQL> SELECT DBID,NAME FROM V$DATABASE;
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1230404613 DB01
SQL> SHUTDOWN IMMEDIATE;
Database closed.
Database dismounted.
ORACLE instance shut down.
Must be : Take Whole Database Backup (Oracle Recommended)
Otherwise u lost ur database.
SQL> STARTUP MOUNT;
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Total System Global Area 171966464 bytes
Fixed Size 787988 bytes
Variable Size 145488364 bytes
Database Buffers 25165824 bytes
Redo Buffers 524288 bytes
Database mounted.
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DBNEWID UTILITY >>>NID ( OS Path : d:\oracle\product\10.1.0\db_1\bin\nid)
C:\>SET ORACLE_SID=DB01
C:\>NID TARGET=SYS/ORACLE@DB01 DBNAME=ORADB01 SETNAME=YES
DBNEWID: Release 10.1.0.2.0 - Production
Copyright (c) 2001, 2004, Oracle. All rights reserved.
Connected to database DB01 (DBID=1230404613)
Connected to server version 10.1.0
Control Files in database:
D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\CONTROL01.CTL
D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\CONTROL02.CTL
D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\CONTROL03.CTL
Change database name of database DB01 to ORADB01? (Y/[N]) => Y
Proceeding with operation
Changing database name from DB01 to ORADB01
Control File D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\CONTROL01.CTL - modified
Control File D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\CONTROL02.CTL - modified
Control File D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\CONTROL03.CTL - modified
Datafile D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\SYSTEM01.DBF - wrote new name
Datafile D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\UNDOTBS01.DBF - wrote new nam
e
Datafile D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\SYSAUX01.DBF - wrote new name
Datafile D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\USERS01.DBF - wrote new name
Datafile D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\TEMP01.DBF - wrote new name
Control File D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\CONTROL01.CTL - wrote new
name
Control File D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\CONTROL02.CTL - wrote new
name
Control File D:\ORACLE\PRODUCT\10.1.0\ORADATA\DB01\CONTROL03.CTL - wrote new
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Instance shut down
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Succesfully changed database name.
DBNEWID - Completed succesfully.
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Note:
The DBNEWID utility does not change the server parameter file (SPFILE). Therefore, if you use SPFILE to start your Oracle database, you must re-create the initialization parameter file from the server parameter file, remove the server parameter file, change the DB_NAME in the initialization parameter file, and then re-create the server parameter file.
---Create New Password File
cmd>orapwd file=d:\oracle\product\10.1.0\db_1\database\pwddb01.ora password=oracle entries=5
SQL> STARTUP PFILE=D:\Oracle\product\10.1.0\Db_1\database\initdb01.ora
ORACLE instance started.
Total System Global Area 171966464 bytes
Fixed Size 787988 bytes
Variable Size 145488364 bytes
Database Buffers 25165824 bytes
Redo Buffers 524288 bytes
Database mounted.
Database opened.
SQL> select dbid,name from v$database;
DBID NAME
1230404613 ORADB01
Note:
After Change DB Name Take Whole Database bkp.
Note: If i am missing some step or write wrong step plz. correct me.
Before doing this refer documentation.
http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14215/dbnewid.htm
thanx
Message was edited by:
user526020
null

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Plot detect.vi ‏25 KB

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