Oracle Availability

Hello, I have a real time application that use a Oracle 10g Database. I want to make a high availaibilty system (not is necessary 24x7, because the application only is use for the morning). Now, I'm testing in a server for test purpose. I need one database in production and one database in standby. If the first database fail, I need the other database (standby) works with all datas. I test oracle dataguard, but I don´t know make the system, I tried but I can not build it. However, I tried with the Oracle Streams. Oracle Streams is very easy, I use Oracle Enterprise Manager Console for create two scrips and a file .bat. I run the scripts and .bat file, and I have 2 database that replicate the datas. The database work well, but after one or two days, Oracle show me one error (Ora-00257). The error is because is 100% used the space of flashback. My server have a lot of space, I suppose that increase the size of flashback area the system will be work, but it solution it's not definitive, because before or later, the flashback area will be 100% used, I want one solution for I specified the size of flashback area, and the system delete the unnecessary space, for example if my flashback area is 3G then when the used size will be near to 80 or 90% of used space, the system delete the unnecessary space and control it self.
Can anyone help me, please??

I am not sure what problem you had while setting the dataguard. I personally believe dataguard is the best solution for your business case.
There are many notes available on net / metalink on how to create physical standby.
http://www.dbapool.com/articles/043005.html (good one)
But if want to go with streams, No issues.
You have to cleanup flashback area if you are storing archive logs and backup sets. Your error says that you have archive logs which filled the flash back area so backup them regularly and clean up the flashback area.
Metalink note 305812.1 Flash Recovery area - Space management Warning & Alerts

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CKPT wrote:
Satish Kandi wrote:
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Message was edited by:
user454720

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