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Alter session set events’10053 trace name context forever[,level {1/2}]’;
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SYS.DBMS_SYSTEM.SET_EV (<sid>, <serial#>, 10053, {1|2}, '')
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SYS.DBMS_SYSTEM.SET_EV (<sid>, <serial#>, 10053,0, '')
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BASE STATISTICAL INFORMATION
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Table stats Table: TEST Alias: TEST
TOTAL :: CDN: 999 NBLKS: 13 AVG_ROW_LEN: 86
-- Index stats
INDEX NAME: IDX_OBJECT_ID COL#: 4
TOTAL :: LVLS: 1 #LB: 3 #DK: 999 LB/K: 1 DB/K: 1 CLUF: 582
_OPTIMIZER_PERCENT_PARALLEL = 0
***************************************
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Trace label dba_tables column describe
CDN NUM_ROWS The cardinality = number of rows of the table
NBLKS &nbs
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