Causing the system RMAN backups for not responding

Need some help here. I inherited a system in which has about 65 GB memory, Linux 64 - bit - 16 processors. Whenever an RMAN backup is performed, else cannot do anything. The load average is about 10 (max). My theory is that it is the init.ora parameters, but not sure... Here's the deal:

SGA_MAX_SIZE = 47GB
SGA_TARGET = 0
shared_pool_size = 5G
JAVA_POOL_SIZE = 1 G
LARGE_POOL_SIZE = 0
db_cache_size = 38G

I'll look into what I have to change. I just wanted to get other opinions since I inherited a wasp nest and need elements good enough before you can change all the settings. All documents, Metalink, etc that you can provide to support a change in these parameters would be great. Thank you.

Hello

You can check http://download.oracle.com/docs/cd/B10501_01/server.920/a96566/rcmtunin.htm

You can use the formula to set the size of the pool. If you do not install the largest basin of the rman uses memory of shared pool which can cause the problem of e/s/execution.

LARGE_POOL_SIZE = number_of_allocated_channels * (16 MB + (4 * size_of_tape_buffer))

Hope this will help you.

Thank you
Krishna

Tags: Database

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