Oracle中数据块中row number缺失该怎么办，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
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环境1：
SCOTT@proc> drop table tt purge;
Table dropped.
SCOTT@proc>
SCOTT@proc>
SCOTT@proc> create table tt (id int,name varchar2(2000)) tablespace users;
Table created.
SCOTT@proc> insert into tt values(1,rpad('a',1800,'+'));
1 row created.
SCOTT@proc> insert into tt values(2,rpad('b',1800,'+'));
1 row created.
SCOTT@proc> insert into tt values(3,rpad('c',1800,'+'));
1 row created.
SCOTT@proc> insert into tt values(4,rpad('d',1800,'+'));
1 row created.
SCOTT@proc> commit;
Commit complete.
SCOTT@proc> select id,substr(name,1,1),rowid,dbms_rowid.rowid_relative_fno(rowid) file#,dbms_rowid.rowid_block_number(rowid) block#,dbms_rowid.rowid_row_number(rowid) row# from tt;
ID SU ROWID FILE# BLOCK# ROW#
---------- -- ------------------ ---------- ---------- ----------
1 a AAAV8LAAEAAAAImAAA 4 550 0
2 b AAAV8LAAEAAAAImAAB 4 550 1
3 c AAAV8LAAEAAAAImAAC 4 550 2
4 d AAAV8LAAEAAAAImAAD 4 550 3
SCOTT@proc> delete from tt where id=2;
1 row deleted.
SCOTT@proc> commit;
Commit complete.
SCOTT@proc> insert into tt values(5,rpad('e',1800,'+'));
1 row created.
SCOTT@proc> commit;
Commit complete.
SCOTT@proc> select id,substr(name,1,1),rowid,dbms_rowid.rowid_relative_fno(rowid) file#,dbms_rowid.rowid_block_number(rowid) block#,dbms_rowid.rowid_row_number(rowid) row# from tt;
ID SU ROWID FILE# BLOCK# ROW#
---------- -- ------------------ ---------- ---------- ----------
1 a AAAV8LAAEAAAAImAAA 4 550 0
5 e AAAV8LAAEAAAAImAAB 4 550 1
3 c AAAV8LAAEAAAAImAAC 4 550 2
4 d AAAV8LAAEAAAAImAAD 4 550 3
环境2：
SCOTT@proc> drop table tt purge;
Table dropped.
SCOTT@proc> create table tt (id int,name varchar2(2000)) tablespace users;
Table created.
SCOTT@proc> insert into tt values(1,rpad('a',1800,'+'));
1 row created.
SCOTT@proc> insert into tt values(2,rpad('b',1800,'+'));
1 row created.
SCOTT@proc> insert into tt values(3,rpad('c',1800,'+'));
1 row created.
SCOTT@proc> commit;
Commit complete.
SCOTT@proc> select id,substr(name,1,1),rowid,dbms_rowid.rowid_relative_fno(rowid) file#,dbms_rowid.rowid_block_number(rowid) block#,dbms_rowid.rowid_row_number(rowid) row# from tt;
ID SU ROWID FILE# BLOCK# ROW#
---------- -- ------------------ ---------- ---------- ----------
1 a AAAV8VAAEAAAAIkAAA 4 548 0
2 b AAAV8VAAEAAAAIkAAB 4 548 1
3 c AAAV8VAAEAAAAIkAAC 4 548 2
SCOTT@proc> delete from tt where id=2;
1 row deleted.
SCOTT@proc> insert into tt values(4,rpad('d',1800,'+'));
1 row created.
SCOTT@proc> commit;
Commit complete.
SCOTT@proc> insert into tt values(5,rpad('e',1800,'+'));
1 row created.
SCOTT@proc> commit;
Commit complete.
SCOTT@proc> select id,substr(name,1,1),rowid,dbms_rowid.rowid_relative_fno(rowid) file#,dbms_rowid.rowid_block_number(rowid) block#,dbms_rowid.rowid_row_number(rowid) row# from tt;
ID SU ROWID FILE# BLOCK# ROW#
---------- -- ------------------ ---------- ---------- ----------
1 a AAAV8VAAEAAAAIkAAA 4 548 0
3 c AAAV8VAAEAAAAIkAAC 4 548 2
4 d AAAV8VAAEAAAAIkAAD 4 548 3
5 e AAAV8VAAEAAAAIkAAE 4 548 4
SCOTT@proc>
环境3：
SCOTT@proc> drop table tt purge;
Table dropped.
SCOTT@proc> create table tt (id int,name varchar2(2000)) tablespace users;
Table created.
SCOTT@proc> insert into tt values(1,rpad('a',1800,'+'));
1 row created.
SCOTT@proc> insert into tt values(2,rpad('b',1800,'+'));
1 row created.
SCOTT@proc> insert into tt values(3,rpad('c',1800,'+'));
1 row created.
SCOTT@proc> commit;
Commit complete.
SCOTT@proc> select id,substr(name,1,1),rowid,dbms_rowid.rowid_relative_fno(rowid) file#,dbms_rowid.rowid_block_number(rowid) block#,dbms_rowid.rowid_row_number(rowid) row# from tt;
ID SU ROWID FILE# BLOCK# ROW#
---------- -- ------------------ ---------- ---------- ----------
1 a AAAV8MAAEAAAAImAAA 4 550 0
2 b AAAV8MAAEAAAAImAAB 4 550 1
3 c AAAV8MAAEAAAAImAAC 4 550 2
SCOTT@proc> delete from tt where id=2;
1 row deleted.
SCOTT@proc> commit;
Commit complete.
SCOTT@proc> insert into tt values(4,rpad('d',1800,'+'));
1 row created.
SCOTT@proc> insert into tt values(5,rpad('e',1800,'+'));
1 row created.
SCOTT@proc> commit;
Commit complete.
SCOTT@proc> select id,substr(name,1,1),rowid,dbms_rowid.rowid_relative_fno(rowid) file#,dbms_rowid.rowid_block_number(rowid) block#,dbms_rowid.rowid_row_number(rowid) row# from tt;
ID SU ROWID FILE# BLOCK# ROW#
---------- -- ------------------ ---------- ---------- ----------
1 a AAAV8MAAEAAAAImAAA 4 550 0
5 e AAAV8MAAEAAAAImAAB 4 550 1
3 c AAAV8MAAEAAAAImAAC 4 550 2
4 d AAAV8MAAEAAAAImAAD 4 550 3
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名称栏目：Oracle中数据块中rownumber缺失该怎么办
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