Queries which slows down the database drastically.
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Thread: Queries which slows down the database drastically.

  1. #1
    Join Date
    May 2001
    Posts
    1
    Hi,
    We are running Oracle 8i on a Solaris platform. Our tables have a maximum row size of 150,000 rows. We have our production and development schema on the same database. While developing we happen to run some wrong queries like joining a couple of tables without joining properly. Thus, the database cpu usage goes to maximum and slows down all queries in the production schema as well. Even though the query returns a value, our database slows down fully and only after we restart our system does the database come back to its original speed.

    PS: I am not a Database Administrator, but I need to resolve this issue. Can somebody please help me.

    Thank you,
    Vidya


  2. #2
    Join Date
    Nov 2000
    Location
    greenwich.ct.us
    Posts
    9,095
    run this query:
    select a.username, a.terminal, a.program, b.sql_text
    from v$session a, v$sqlarea b, v$process c
    where (c.spid = 'your unix process id' or a.process = 'your unix process id')
    and a.paddr = c.addr
    and a.sql_address = b.address
    /

    'your unix process id' is the process id that is running at 100%. You can get this process id via /usr/ucb/ps -aux or top
    Jeff Hunter
    marist89@yahoo.com
    http://marist89.blogspot.com/
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