my query just runs and doesnt execute, what is wrong. work on oracle sql developer, company server
CREATE TABLE voice2020 AS
SELECT
to_char(SDATE , 'YYYYMM') as month,
MSISDN,
SUM(CH_MONEY_SUBS_DED)/100 AS AIRTIME_VOICE,
SUM(CALLDURATION/60) AS MIN_USAGE,
sum(DUR_ONNET_OOB/60) as DUR_ONNET_OOB,
sum(DUR_ONNET_IB/60) as DUR_ONNET_IB,
sum(DUR_ONNET_FREE/60) as DUR_ONNET_FREE,
sum(DUR_OFFNET_OOB/60) as DUR_OFFNET_OOB,
sum(DUR_OFFNET_IB/60) as DUR_OFFNET_IB,
sum(DUR_OFFNET_FREE/60) as DUR_OFFNET_FREE,
SUM(case when sdate < to_date('20190301','YYYYMMDD')
then CH_MONEY_PAID_DED-nvl(CH_MONEY_SUBS_DED,0)-REV_VOICE_INT-REV_VOICE_ROAM_OUTGOING-REV_VOICE_ROAM_Incoming
else (CH_MONEY_OOB-REV_VOICE_INT-REV_VOICE_ROAM_OUTGOING-REV_VOICE_ROAM_Incoming) end)/100 AS VOICE_OOB_SPEND
FROM CCN.CCN_VOICE_MSISDN_MM@xdr1
where MSISDN IN ( SELECT MSISDN FROM saayma_a.BASE30112020) --change date
GROUP BY
MSISDN,
to_char(SDATE , 'YYYYMM')
;
This is a performance issue. Clearly the query driving your CREATE TABLE statement is taking too long to return a result set.
You are querying from a table in a remote database (CCN.CCN_VOICE_MSISDN_MM@xdr1) and then filtering against a local table (saayma_a.BASE30112020) . This means you are going to copy all of that remote table across the network, then discard the records which don't match the WHERE clause.
You know your data (or at least you should know it): does that sound efficient? If you're actually discarding most of the records you should try to filter CCN_VOICE_MSIDN_MM in the remote database.
If you need more advice you need to provide more information. Please read this post about asking Oracle tuning questions on this site, then edit your question to include some details.