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I have facing issue in one of my report query on exadata.

in SQL Performance (MOSC) 3 commentsAnswered

I have facing issue in one of my report query on exadata and  also used parallel hint for the query but no improvement.

It was executed in an hour in normal server but in exadata even after 10 hours we are not getting result.

 please help me for using smart scan to improve query performance.


"SELECT /*+ parallel(TLOG,10) */ TO_CHAR(ROWNUM) AS SERIAL, "

"TLOG.TRAN_CODE AS TRANCODE, T.TRAN_DESCRIPTION, ACQ_CHANNEL.CHANNELID "

"SRC_CHANNEL, ACQ_CHANNEL.CHANNELNAME SRC_CHANNEL_NAME, "

"ISSUER_CHANNEL.CHANNELID DEST_CHANNEL, ISSUER_CHANNEL.CHANNELNAME "

"DEST_CHANNEL_NAME, CASE ACQ_CHANNEL.CHANNELCATEGORY WHEN 'ATM' THEN "

"CASE ISSUER_CHANNEL.CHANNELCATEGORY WHEN 'HOST' THEN 'Local ATM "

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