Oracle中数据块中row number缺失该怎么办

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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,下面丸趣 TV 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。

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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