Description:
Oracle database administration/server topics.
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Oracle 10g on Solaris 10 non-global zones with asynchronous I/O
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Hi All, I note that using direct I/O (by setting the forcedirectio while mounting the database file systems) and bypassing the file system cache may improve database performance significantly, but this should be done only for file systems in which database files and redo log files exist. If direct I/O is used and there is not enough database... more »
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New Procedurs With Version# In Name
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So when my developers need to make a change to a procedure, instead of just recompiling the procedure they want to create a new procedure named like sp_procedure2 and then use the new procedure in their application. They want to do this so that they don't mess up any other application that might be calling the same procedure. And then when they can get... more »
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Multiple selects in one
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I'm trying to write a query that will combine multiple rows from the same table into one row. That can be done with each column being a SELECT statement. However, in my case each column has different criteria and I'm running into a problem where if any of the criteria from any of the queries is false, the entire query returns nothing.... more »
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ORA-00470: LGWR process terminated with error
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Hi, I am currently running two Oracle 10G instances from a single Solaris M4000 server. Every few days one of the instances crashes with the following error and has to be restarted. ORA-00470: LGWR process terminated with error PMON: terminating instance due to error 470 I have spend weeks running various trace files etc with Oracle support... more »
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how does update on table find other index blocks to maintain
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Hi, Just for general understanding, I have a question, related to how the rowid to index block lookup is done. This question was spawned by a 10046 trace that was run through the TraceAnalyzer (from Metalink, great tool) that showed me serious reads on an index that was not part of the access path from the optimizer... more »
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