关于SQL Server将一列的多行内容拼接成一行的问题讨论

在oracle9i和oracle10g中，数据库默认将使用spfile启动数据库，如果spfile不存在，并且找不到静态参数文件或环境变量设置错误，则就会出现ORA-01078和LRM-00109错误。这里介绍一种情况spfile不存在后的数据库启动。实验前：移走动态参数文件，并且没有静态参数文件。[oracle@redhat4 dbs]$ lshc_jiagulun.dat init.ora orapwjiagulun spfilejiagulun.orainitdw.ora lkJIAGULUN snapcf_jiagulun.f[oracle@redhat4dbs]mvspfilejiagulun.ora ../spfilejiagulun.ora启动数据库，报错找不到静态参数文件initjiagulun.ora（因为数据库找不到动态参数文件之后就会去找静态参数文件）SQL> startup; ORA-01078: failure in processing system parametersLRM-00109: could not open parameter file '/u01/app/oracle/product/10.2.0/db_1/dbs/initjiagulun.ora'
解决方法：1、复制并重命名：[oracle@redhat4 pfile]$ cp /u01/app/oracle/admin/jiagulun/pfile/init.ora.1019201314446 /u01/app/oracle/product/10.2.0/db_1/dbs/initjiagulun.ora
2、成功启动数据库，注意此时只是用静态参数文件启动。[oracle@redhat4 pfile]$ sqlplus / as sysdba;

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Dec 27 19:37:48 2013

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to an idle instance.

SQL> startup;
ORACLE instance started.

Total System Global Area 285212672 bytes
Fixed Size 1218992 bytes
Variable Size 92276304 bytes
Database Buffers 188743680 bytes
Redo Buffers 2973696 bytes
Database mounted.
Database opened.
SQL>
3、重新生成动态参数文件，再次启动时就会用动态参数文件启动数据。
SQL> create spfile from pfile ;
File created.
SQL> shutdown abort;ORACLE instance shut down.SQL> SQL> SQL> SQL> startup;ORACLE instance started.
Total System Global Area 285212672 bytesFixed Size 1218992 bytesVariable Size 92276304 bytesDatabase Buffers 188743680 bytesRedo Buffers 2973696 bytesDatabase mounted.Database opened.SQL> show parameter spfile;
NAME TYPE VALUE------------------------------------ ----------- ------------------------------spfile string /u01/app/oracle/product/10.2.0 /db_1/dbs/spfilejiagulun.ora