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ORA-12500: TNS:listener failed to start a dedicated server process

 
Arun raghvan
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ORA-12500: TNS:listener failed to start a dedicated server process ...i'm getting this error ,not able to open my database,can someone guide me step by step process to do things.
 
Jeanne Boyarsky
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Arun raghvan
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Please,Move the thread to Oracle/OAS.
 
Arun raghvan
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When I increase value of parameter SORT_AREA_SIZE in init.ora file by some magnitide, it gets successfully connected even without restart of database service. How come?
 
Jeanne Boyarsky
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Moved as requested.

I imagine some parameters take effect immediately and others require a restart.
 
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