Comments on: Backing up your applications

By: smallkoala

smallkoala — Wed, 26 Nov 2008 09:44:05 +0000

Hi John
Thanks for your introduction.I am trying this solution.I believe my CLASSPATH is correct.But sometimes(not always) when I run java oracle.apex.APEXExport -db APEXSERVER:1521:apexdb -user apexusr -password apexpwd -applicationid 1111,I get the following error:
Exception in thread “main” java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:254)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:386)
at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:419)
at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:164)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:752)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at oracle.apex.APEXExport.main(APEXExport.java:304)

I know the error happens when programa connect database using jdbc .It is not happened all the time,sometimes I got this error and sometimes it runs very well.I know there must be some issues.Could you give me some advices to fix this problems? Thanks.

By: Bill Johnson

Bill Johnson — Thu, 02 Oct 2008 15:21:12 +0000

OK - forget that last post. Discovered I was not using Sun JDK, but rather the open java equivalent. Switched to Sun’s java and I’m getting farther.

By: Bill Johnson

Bill Johnson — Thu, 02 Oct 2008 14:43:22 +0000

I’m trying to run APEXExport on RHEL4. I have the $CLASSPATH set:
.:/home/oracle/oracle/product/10.2.0/db_1/jdbc/lib/classes12.zip

I can run java oracle/apex/APEXExport just fine, and it displays the usage info. If I try to run:
java oracle/apex/APEXExport -db host:port:SID -user apex -password apex -instance (or any other flag), I get:

Exception in thread “main” java.lang.AbstractMethodError
at _Jv_MakeVTable(java.lang.Class) (/usr/lib/libgcj.so.5.0.0)
at _Jv_PrepareClass(java.lang.Class) (/usr/lib/libgcj.so.5.0.0)
at _Jv_WaitForState(java.lang.Class, int) (/usr/lib/libgcj.so.5.0.0)
at java.lang.VMClassLoader.linkClass0(java.lang.Class) (/usr/lib/libgcj.so.5.0.0)
at java.lang.VMClassLoader.resolveClass(java.lang.Class) (/usr/lib/libgcj.so.5.0.0)
at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.5.0.0)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.util.Properties) (Unknown Source)
at oracle.jdbc.driver.OracleDriver.connect(java.lang.String, java.util.Properties) (Unknown Source)
at java.sql.DriverManager.getConnection(java.lang.String, java.util.Properties) (/usr/lib/libgcj.so.5.0.0)
at java.sql.DriverManager.getConnection(java.lang.String, java.lang.String, java.lang.String) (/usr/lib/libgcj.so.5.0.0)
at oracle.apex.APEXExport.main(java.lang.String[]) (Unknown Source)

What am I missing?

Thanks for this excellent tutorial BTW. I hope I can make it work for us, for it will really solve a big problem.

Bill

By: John Scott

John Scott — Tue, 19 Aug 2008 14:49:33 +0000

Cazzonio,

Did you remember to do the CLASSPATH part?

John.

By: Cazzonio

Cazzonio — Thu, 31 Jul 2008 10:41:34 +0000

I put APEXExport.class in the working directory, but when i command “java oracle.apex.APEXExport” i get the following error:
Exception in thread “main” java.lang.NoClassDefFoundError: oracle/apex/APEXExpor
t
Caused by: java.lang.ClassNotFoundException: oracle.apex.APEXExport
at java.net.URLClassLoader$1.run(Unknown Source)
at ……

By: John Scott

John Scott — Wed, 16 Jul 2008 08:10:10 +0000

Thanks Geert!

John.

By: Geert Joosten

Geert Joosten — Wed, 16 Jul 2008 07:49:15 +0000

Hi John,

This is the proof that’s worth to keep old posts available: what a nice tool and clear written explanation.
Thanks,
Geert.

By: Floris Vermeir

Floris Vermeir — Mon, 14 May 2007 12:49:37 +0000

Its quite intresting. I have exported an application, well sort of, just to try out the export function in apex. It does so quite well, yet the location it exports to is a mistery. So with these tools, I could specify that location. Its good to know they exist.

By: John Scott

John Scott — Wed, 13 Dec 2006 08:32:06 +0000

Jan,

Excellent solution, thanks for that.

John.

By: Jan Huyzentruyt

Jan Huyzentruyt — Wed, 13 Dec 2006 08:29:35 +0000

For the unlucky people who have to work in a windows environment, you can find
an example of a .bat file that exports a given ApEx application on following URL:
http://iadvise.blogspot.com/2006/11/automatically-backing-up-your-apex.html

By: John Scott

John Scott — Tue, 12 Dec 2006 22:36:36 +0000

Hi Patrick,

Thanks for spotting that, I’ve changed the link colours in the CSS now so that links should be slightly easier to spot.

Thanks,

John.

By: Patrick Wolf

Patrick Wolf — Tue, 12 Dec 2006 22:13:35 +0000

Hi John,

good intruduction to the export utility. I think there a lot of people who don’t know about that.

BTW, I noticed in your posting that you have several links in your posting, but they don’t render as links as long as you don’t move the mouse over them. So you really have to be lucky to find this links :-)

Greetings from Vienna
Patrick
———————————————————–
Check out my APEX-Blog: http://inside-apex.blogspot.com