row chain:When a row is too large to fit into any block, row chaining occurs. In this case, the Oracle devide the row into smaller chunks. each chunk is stored in a block along with the necessary poiters to retrive and assemble the entire row.row
set linesize 180set pages 999set long 90000--設定按單詞換行col a for a200 wrapped word--select dbms_metadata.get_ddl('INDEX','I_DJ_NSRXX_DJJG_DM','HX_DJ') a from dual;--去除storage等多餘參數EXECUTE DBMS_METADATA.SET_TRANSFORM_PARAM(DBMS_METADATA.SESSION_TRANSFORM,
select wait_class,name from v$event_name where name = 'enq: FB - contention';WAIT_CLASS NAME---------------------------- ----------------------------------------------------------------Other
今天在一個使用了DBLINK insert到本機資料庫的時候,執行insert操作本身正常,但是當COMMIT時,就報ORA-02050,ORA-02051 ERROR。/orabakup$oerr ora 205002050, 00000, "transaction %s rolled back, some remote DBs may be in-doubt"// *Cause: network or remote failure in 2PC.// *Action: Notify
alert.log 錯誤 Fatal NI connect error 12170. VERSION INFORMATION: TNS for Solaris: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for Solaris: Version 11.2.0.1.0 - Production TCP/IP NT Protocol Adapter for
vi $ORACLE_HOME/sqlplus/admin/glogin.sqldefine_editor=viset serveroutput on size 100000set trimspool onset long 5000set linesize 200set pagesize 9999column plan_plus_exp format a80col global_name new_value gnamecol member for a40col name for a40col
SQL> drop table t1 purge;表已刪除。SQL> create table t1 as select *From emp;表已建立。SQL> alter table t1 add a varchar2(20);表已更改。SQL> select *From t1; EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO A-----