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SQL>
SQL> COLUMN segment_name FORMAT a15
SQL> SELECT segment_name, segment_type, COUNT(*), SUM(bytes)
2 FROM dba_extents
3 WHERE segment_name IN
4 ('COL$', 'DEPENDENCY$', 'ERROR$', 'IDL_CHAR$',
5 'IDL_SB4$', 'IDL_UB1$', 'IDL_UB2$', 'LINK$', 'OBJ$',
6 'OBJAUTH$', 'SOURCE$', 'SYSAUTH$', 'TRIGGER$',
7 'TRIGGERCOL$', 'USER$')
8 and rownum < 50
9 GROUP BY segment_name, segment_type
10 ORDER BY segment_type, segment_name;
SEGMENT_NAME SEGMENT_TYPE COUNT(*) SUM(BYTES)
--------------- ------------------ ---------- ----------
OBJ$ TABLE 17 2097152
OBJAUTH$ TABLE 2 131072
SOURCE$ TABLE 30 15728640
SQL>
SQL>
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