DL 380 G5 servers RAM installation/ upgrade

[sumanlal V K]

Hi
I have 3 x DL 380 G5 servers with (2 x1 GB) PC2-5300 Fully Buffered DIMMs (DDR2-667) with Advanced ECC. I am running Oracle application on one of the servers and the application is running slow all when taking big reports. Can i increse the RAM by adding another (2 x1 GB) PC2-5300 Fully Buffered DIMMs (DDR2-667) with Advanced ECC?. so it will make 4 GB rams... and I found 8 slots onboard
pls advice

also tell me which are the combination i can use in these servers
1+1+1+1 makes 4 GB
2+2 makes 4 GH
2+2+1+1 makes 6 GB

OS installed is WIn2k Advansed server

thanks in advance

[Xteven · Accepted solution]

The server supports the following Advanced Memory Protection (AMP) options to optimize server availability.

Advanced ECC supporting up to 16 GB of active memory using 2 GB FBDIMMs.

Online Spare Memory providing additional protection against degrading FBDIMMs supporting up to 12 GB of active memory and 4 GB of online spare memory utilizing 2 GB FBDIMMs.

Mirrored Memory providing protection against failed FBDIMMs supporting up to 8 GB of active memory and 8 GB of mirrored memory utilizing 2 GB FBDIMMs.

Check the picture that is attach for the ECC memory configuration