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-------------shutdown abort
[Oracle@wing /Oracle]$ sqlplus " / as sysdba" //ÒÔsysdbaÓû§µÇ½Êý¾Ý¿â
SQL*Plus: Release 9.0.1.0.0 - Production on Wed Jul 11 15:35:31 2001
(c) Copyright 2001 Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.0.1.0.0 - Production
With the Partitioning option
JServer Release 9.0.1.0.0 - Production
ÔËÐÐshudownÃüÁî¹Ø±ÕÊý¾Ý¿â
SQL> shutdown
Database closed.
Database dismounted.
Oracle instance shut down.
SQL>
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[Oracle@wing bin]$ sqlplus " / as sysdba"
SQL*Plus: Release 9.0.1.0.0 - Production on Wed Jul 11 16:00:59 2001
(c) Copyright 2001 Oracle Corporation. All rights reserved.
Connected to an idle instance.
SQL> startup
Oracle instance started.
Total System Global Area 336356520 bytes
Fixed Size 279720 bytes
Variable Size 268435456 bytes
Database Buffers 67108864 bytes
Redo Buffers 532480 bytes
Database mounted.
Database opened.
SQL>
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[Oracle@wing bin]$ lsnrctl
LSNRCTL for Linux: Version 9.0.1.0.0 - Production on 11-JUL-2001 16:12:17
Copyright (c) 1991, 2001, Oracle Corporation. All rights reserved.
Welcome to LSNRCTL, type "help" for information.
LSNRCTL> start
Starting /Oracle/product/9.0.1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 9.0.1.0.0 - Production
System parameter file is /Oracle/product/9.0.1/network/admin/listener.ora
Log messages written to /Oracle/product/9.0.1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=wing)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)
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204. ÈçºÎµÃµ½×Ö·û´®µÄµÚÒ»個×Ö·ûµÄASCIIÖµ?
ASCII(CHAR)
SELECT ASCII('ABCDE') from DUAL;
結¹û: 65
205. ÈçºÎµÃµ½數ÖµNÖ¸¶¨µÄ×Ö·û?
CHR(N)
SELECT CHR(68) from DUAL;
結¹û: D
206.  ......
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