redhat linux 11.2 rac grid infrastructure add scan ip

由于客户想要在新的生产环境中仍然使用原来的虚拟IP,所以当数据从原数据迁移到新的rac环境中后,我们需要修改虚拟IP,但原来是个单实例使用两上虚拟IP地址,现在是一个RAC数据库,如果是修改RAC的虚拟IP,那么不能做负载均衡,每次都连接到的是一个节点,由于SCAN IP使用/etc/hosts方式创建并且在安装生产环境时只指定了一个IP地址(10.138.130.155),所以这里需要通过增加SCAN IP地址(10.138.130.156/157)的方式来解决。

检查现在/etc/hosts配置:

[root@jyrac1 ~]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1               jyrac1 localhost.localdomain localhost
::1             localhost6.localdomain6 localhost6
10.138.130.151 jyrac1
10.138.130.152 jyrac2

10.138.130.153 jyrac1-vip
10.138.130.154 jyrac2-vip

10.10.10.1 jyrac1-priv
10.10.10.2 jyrac2-priv

10.138.130.155 jyrac-scan

查看scan ip所在节点,发现scan ip是在节点jyrac1上

[grid@jyrac1 ~]$ crsctl stat res -t
--------------------------------------------------------------------------------
NAME           TARGET  STATE        SERVER                   STATE_DETAILS       
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ARCHDG.dg
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.CRSDG.dg
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.DATADG.dg
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.LISTENER.lsnr
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.asm
               ONLINE  ONLINE       jyrac1                   Started             
               ONLINE  ONLINE       jyrac2                   Started             
ora.gsd
               OFFLINE OFFLINE      jyrac1                                       
               OFFLINE OFFLINE      jyrac2                                       
ora.net1.network
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.ons
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.registry.acfs
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       jyrac1                                       
ora.cvu
      1        ONLINE  ONLINE       jyrac1                                       
ora.jyrac.db
      1        ONLINE  ONLINE       jyrac1                   Open                
      2        ONLINE  ONLINE       jyrac2                   Open                
ora.jyrac1.vip
      1        ONLINE  ONLINE       jyrac1                                       
ora.jyrac2.vip
      1        ONLINE  ONLINE       jyrac2                                       
ora.oc4j
      1        ONLINE  ONLINE       jyrac1                                       
ora.scan1.vip
      1        ONLINE  ONLINE       jyrac1            

查看scan ip所在的网卡,发现在eth0上

[root@jyrac1 ~]# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:50:56:B1:00:FD  
          inet addr:10.138.130.151  Bcast:10.138.130.255  Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:feb1:fd/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1077473 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9663995 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:103934930 (99.1 MiB)  TX bytes:14096320534 (13.1 GiB)
          Base address:0x2800 Memory:fd5c0000-fd5e0000 

eth0:1    Link encap:Ethernet  HWaddr 00:50:56:B1:00:FD  
          inet addr:10.138.130.153  Bcast:10.138.130.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Base address:0x2800 Memory:fd5c0000-fd5e0000 

eth0:2    Link encap:Ethernet  HWaddr 00:50:56:B1:00:FD  
          inet addr:10.138.130.155  Bcast:10.138.130.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Base address:0x2800 Memory:fd5c0000-fd5e0000 

eth1      Link encap:Ethernet  HWaddr 00:50:56:B1:B6:3C  
          inet addr:10.10.10.1  Bcast:10.10.10.255  Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:feb1:b63c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:371756 errors:0 dropped:0 overruns:0 frame:0
          TX packets:290401 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:193253619 (184.3 MiB)  TX bytes:185131607 (176.5 MiB)
          Base address:0x2840 Memory:fd5a0000-fd5c0000 

eth1:1    Link encap:Ethernet  HWaddr 00:50:56:B1:B6:3C  
          inet addr:169.254.202.209  Bcast:169.254.255.255  Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Base address:0x2840 Memory:fd5a0000-fd5c0000 

检查scan的配置信息

[grid@jyrac1 ~]$ srvctl config scan
SCAN name: jyrac-scan, Network: 1/10.138.130.0/255.255.255.0/eth0
SCAN VIP name: scan1, IP: /jyrac-scan/10.138.130.155

检查scan listener状态

[grid@jyrac1 ~]$ srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node jyrac1

关闭scan listener

[grid@jyrac1 ~]$ srvctl stop scan_listener

关闭scan

[grid@jyrac1 ~]$ srvctl stop scan
[grid@jyrac1 ~]$ srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is not running

修改各节点的/etc/hosts文件增加两个scan ip地址

[root@jyrac1 ~]# vi /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1               jyrac1 localhost.localdomain localhost
::1             localhost6.localdomain6 localhost6
10.138.130.151 jyrac1
10.138.130.152 jyrac2

10.138.130.153 jyrac1-vip
10.138.130.154 jyrac2-vip

10.10.10.1 jyrac1-priv
10.10.10.2 jyrac2-priv

10.138.130.155 jyrac-scan
10.138.130.156 jyrac-scan
10.138.130.157 jyrac-scan


[root@jyrac2 /]# vi /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1               jyrac2 localhost.localdomain localhost
::1             localhost6.localdomain6 localhost6
10.138.130.151 jyrac1
10.138.130.152 jyrac2

10.138.130.153 jyrac1-vip
10.138.130.154 jyrac2-vip

10.10.10.1 jyrac1-priv
10.10.10.2 jyrac2-priv

10.138.130.155 jyrac-scan
10.138.130.156 jyrac-scan
10.138.130.157 jyrac-scan

修改scan配置,但一定要用root用户来执行

[root@jyrac1 ~]# cd /u01/app/product/11.2.0/crs/bin
[root@jyrac1 bin]# ./srvctl modify scan -n jyrac-scan

检查scan配置

[grid@jyrac1 ~]$ srvctl config scan
SCAN name: jyrac-scan, Network: 1/10.138.130.0/255.255.255.0/eth0
SCAN VIP name: scan1, IP: /jyrac-scan/10.138.130.155

对于/etc/hosts文件解析scan ip,因为不能做轮训的负载均衡,所以这时候scan ip就只能有一个了
但是在oracle linux 6.4中确会显示所有scan ip,例如:

[root@db1 ~]# cd /u01/app/11.2.0/grid/bin
[root@db1 bin]# ./srvctl modify scan -n scan-ip


[grid@db1 bin]$ srvctl config scan
SCAN name: scan-ip, Network: 1/10.138.129.0/255.255.255.0/eth2
SCAN VIP name: scan1, IP: /scan-ip/10.138.129.105
SCAN VIP name: scan2, IP: /scan-ip/10.138.129.120
SCAN VIP name: scan3, IP: /scan-ip/10.138.129.121

具体操作请见:http://www.jydba.net/oracle-linux-11-2-rac-grid-infrastructure-add-scan-ip/

重启scan ,scan listener

                                     
[grid@jyrac1 ~]$ crsctl stat res -t
--------------------------------------------------------------------------------
NAME           TARGET  STATE        SERVER                   STATE_DETAILS       
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ARCHDG.dg
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.CRSDG.dg
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.DATADG.dg
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.LISTENER.lsnr
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.asm
               ONLINE  ONLINE       jyrac1                   Started             
               ONLINE  ONLINE       jyrac2                   Started             
ora.gsd
               OFFLINE OFFLINE      jyrac1                                       
               OFFLINE OFFLINE      jyrac2                                       
ora.net1.network
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.ons
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
ora.registry.acfs
               ONLINE  ONLINE       jyrac1                                       
               ONLINE  ONLINE       jyrac2                                       
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       jyrac2                                       
ora.cvu
      1        ONLINE  ONLINE       jyrac1                                       
ora.jyrac.db
      1        ONLINE  ONLINE       jyrac1                   Open                
      2        ONLINE  ONLINE       jyrac2                   Open                
ora.jyrac1.vip
      1        ONLINE  ONLINE       jyrac1                                       
ora.jyrac2.vip
      1        ONLINE  ONLINE       jyrac2                                       
ora.oc4j
      1        ONLINE  ONLINE       jyrac1                                       
ora.scan1.vip
      1        ONLINE  ONLINE       jyrac2          



手动增加scan ip
[root@jyrac1 bin]# ./crsctl stat res ora.scan1.vip -p > /tmp/2.txt
[root@jyrac1 bin]# ./crsctl stat res ora.scan1.vip -p > /tmp/3.txt
[root@jyrac1 bin]# vi /tmp/2.txt
NAME=ora.scan2.vip
TYPE=ora.scan_vip.type
ACL=owner:root:rwx,pgrp:root:r-x,other::r--,group:oinstall:r-x,user:grid:r-x
ACTION_FAILURE_TEMPLATE=
ACTION_SCRIPT=
ACTIVE_PLACEMENT=1
AGENT_FILENAME=%CRS_HOME%/bin/orarootagent%CRS_EXE_SUFFIX%
AUTO_START=restore
CARDINALITY=1
CHECK_INTERVAL=1
CHECK_TIMEOUT=120
DEFAULT_TEMPLATE=PROPERTY(RESOURCE_CLASS=scan_vip) ELEMENT(HOSTING_MEMBERS=%HOSTING_MEMBERS%)
DEGREE=1
DESCRIPTION=Oracle SCAN VIP resource
ENABLED=1
FAILOVER_DELAY=0
FAILURE_INTERVAL=0
FAILURE_THRESHOLD=0
GEN_USR_ORA_STATIC_VIP=
GEN_USR_ORA_VIP=
HOSTING_MEMBERS=
LOAD=1
LOGGING_LEVEL=1
NLS_LANG=
NOT_RESTARTING_TEMPLATE=
OFFLINE_CHECK_INTERVAL=0
PLACEMENT=balanced
PROFILE_CHANGE_TEMPLATE=
RESTART_ATTEMPTS=0
SCAN_NAME=jyrac-scan
SCRIPT_TIMEOUT=60
SERVER_POOLS=*
START_DEPENDENCIES=hard(ora.net1.network) dispersion:active(type:ora.scan_vip.type) pullup(global:ora.net1.network)
START_TIMEOUT=120
STATE_CHANGE_TEMPLATE=
STOP_DEPENDENCIES=hard(intermediate:ora.net1.network)
STOP_TIMEOUT=0
TYPE_VERSION=1.1
UPTIME_THRESHOLD=1h
USR_ORA_ENV=
USR_ORA_VIP=10.138.130.156
VERSION=11.2.0.4.0

~
"/tmp/2.txt" 43L, 1092C written
[root@jyrac1 bin]# ./crsctl add resource ora.scan2.vip -type ora.scan_vip.type -file /tmp/2.txt
[root@jyrac1 bin]# vi /tmp/3.txt
NAME=ora.scan3.vip
TYPE=ora.scan_vip.type
ACL=owner:root:rwx,pgrp:root:r-x,other::r--,group:oinstall:r-x,user:grid:r-x
ACTION_FAILURE_TEMPLATE=
ACTION_SCRIPT=
ACTIVE_PLACEMENT=1
AGENT_FILENAME=%CRS_HOME%/bin/orarootagent%CRS_EXE_SUFFIX%
AUTO_START=restore
CARDINALITY=1
CHECK_INTERVAL=1
CHECK_TIMEOUT=120
DEFAULT_TEMPLATE=PROPERTY(RESOURCE_CLASS=scan_vip) ELEMENT(HOSTING_MEMBERS=%HOSTING_MEMBERS%)
DEGREE=1
DESCRIPTION=Oracle SCAN VIP resource
ENABLED=1
FAILOVER_DELAY=0
FAILURE_INTERVAL=0
FAILURE_THRESHOLD=0
GEN_USR_ORA_STATIC_VIP=
GEN_USR_ORA_VIP=
HOSTING_MEMBERS=
LOAD=1
LOGGING_LEVEL=1
NLS_LANG=
NOT_RESTARTING_TEMPLATE=
OFFLINE_CHECK_INTERVAL=0
PLACEMENT=balanced
PROFILE_CHANGE_TEMPLATE=
RESTART_ATTEMPTS=0
SCAN_NAME=jyrac-scan
SCRIPT_TIMEOUT=60
SERVER_POOLS=*
START_DEPENDENCIES=hard(ora.net1.network) dispersion:active(type:ora.scan_vip.type) pullup(global:ora.net1.network)
START_TIMEOUT=120
STATE_CHANGE_TEMPLATE=
STOP_DEPENDENCIES=hard(intermediate:ora.net1.network)
STOP_TIMEOUT=0
TYPE_VERSION=1.1
UPTIME_THRESHOLD=1h
USR_ORA_ENV=
USR_ORA_VIP=10.138.130.157
VERSION=11.2.0.4.0

~
"/tmp/3.txt" 43L, 1092C written
[root@jyrac1 bin]# ./crsctl add resource ora.scan2.vip -type ora.scan_vip.type -file /tmp/2.txt
[root@jyrac1 bin]# ./crsctl add resource ora.scan3.vip -type ora.scan_vip.type -file /tmp/3.txt

手动增加scan listener

[root@jyrac1 bin]# ./crsctl stat res  ora.LISTENER_SCAN1.lsnr -p > /tmp/l_2.txt
[root@jyrac1 bin]# ./crsctl stat res  ora.LISTENER_SCAN1.lsnr -p > /tmp/l_3.txt

[root@jyrac1 bin]# vi /tmp/l_3.txt
NAME=ora.LISTENER_SCAN3.lsnr
TYPE=ora.scan_listener.type
ACL=owner:grid:rwx,pgrp:oinstall:r-x,other::r--
ACTION_FAILURE_TEMPLATE=
ACTION_SCRIPT=
ACTIVE_PLACEMENT=1
AGENT_FILENAME=%CRS_HOME%/bin/oraagent%CRS_EXE_SUFFIX%
AUTO_START=restore
CARDINALITY=1
CHECK_INTERVAL=60
CHECK_TIMEOUT=120
DEFAULT_TEMPLATE=PROPERTY(RESOURCE_CLASS=scan_listener) PROPERTY(LISTENER_NAME=PARSE(%NAME%, ., 2))
DEGREE=1
DESCRIPTION=Oracle SCAN listener resource
ENABLED=1
ENDPOINTS=TCP:1521
FAILOVER_DELAY=0
FAILURE_INTERVAL=0
FAILURE_THRESHOLD=0
HOSTING_MEMBERS=
LOAD=1
LOGGING_LEVEL=1
NLS_LANG=
NOT_RESTARTING_TEMPLATE=
OFFLINE_CHECK_INTERVAL=0
PLACEMENT=balanced
PORT=1521
PROFILE_CHANGE_TEMPLATE=
REGISTRATION_INVITED_NODES=
REGISTRATION_INVITED_SUBNETS=
RESTART_ATTEMPTS=5
SCRIPT_TIMEOUT=60
SERVER_POOLS=*
START_DEPENDENCIES=hard(ora.scan3.vip) dispersion:active(type:ora.scan_listener.type) pullup(ora.scan3.vip)
START_TIMEOUT=180
STATE_CHANGE_TEMPLATE=
STOP_DEPENDENCIES=hard(intermediate:ora.scan3.vip)
STOP_TIMEOUT=0
TYPE_VERSION=2.2
UPTIME_THRESHOLD=1d
USR_ORA_ENV=
USR_ORA_OPI=false
VERSION=11.2.0.4.0

"/tmp/l_3.txt" 44L, 1091C written
[root@jyrac1 bin]# vi /tmp/l_2.txt
NAME=ora.LISTENER_SCAN2.lsnr
TYPE=ora.scan_listener.type
ACL=owner:grid:rwx,pgrp:oinstall:r-x,other::r--
ACTION_FAILURE_TEMPLATE=
ACTION_SCRIPT=
ACTIVE_PLACEMENT=1
AGENT_FILENAME=%CRS_HOME%/bin/oraagent%CRS_EXE_SUFFIX%
AUTO_START=restore
CARDINALITY=1
CHECK_INTERVAL=60
CHECK_TIMEOUT=120
DEFAULT_TEMPLATE=PROPERTY(RESOURCE_CLASS=scan_listener) PROPERTY(LISTENER_NAME=PARSE(%NAME%, ., 2))
DEGREE=1
DESCRIPTION=Oracle SCAN listener resource
ENABLED=1
ENDPOINTS=TCP:1521
FAILOVER_DELAY=0
FAILURE_INTERVAL=0
FAILURE_THRESHOLD=0
HOSTING_MEMBERS=
LOAD=1
LOGGING_LEVEL=1
NLS_LANG=
NOT_RESTARTING_TEMPLATE=
OFFLINE_CHECK_INTERVAL=0
PLACEMENT=balanced
PORT=1521
PROFILE_CHANGE_TEMPLATE=
REGISTRATION_INVITED_NODES=
REGISTRATION_INVITED_SUBNETS=
RESTART_ATTEMPTS=5
SCRIPT_TIMEOUT=60
SERVER_POOLS=*
START_DEPENDENCIES=hard(ora.scan2.vip) dispersion:active(type:ora.scan_listener.type) pullup(ora.scan2.vip)
START_TIMEOUT=180
STATE_CHANGE_TEMPLATE=
STOP_DEPENDENCIES=hard(intermediate:ora.scan2.vip)
STOP_TIMEOUT=0
TYPE_VERSION=2.2
UPTIME_THRESHOLD=1d
USR_ORA_ENV=
USR_ORA_OPI=false
VERSION=11.2.0.4.0

"/tmp/l_2.txt" 44L, 1091C written


[root@jyrac1 bin]# ./crsctl add resource ora.LISTENER_SCAN2.lsnr -type ora.scan_listener.type -file /tmp/l_2.txt
[root@jyrac1 bin]# ./crsctl add resource ora.LISTENER_SCAN3.lsnr -type ora.scan_listener.type -file /tmp/l_3.txt

使用增加的scan ip连接数据库,登录不了数据库

C:\Users\Administrator>sqlplus "system/system"@10.138.130.156:1521/jyrac

SQL*Plus: Release 11.2.0.4.0 Production on 星期二 11月 22 22:18:58 2016

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

ERROR:
ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务


请输入用户名:
ERROR:
ORA-12560: TNS: 协议适配器错误


请输入用户名:
ERROR:
ORA-12560: TNS: 协议适配器错误


SP2-0157: 在 3 次尝试之后无法连接到 ORACLE, 退出 SQL*Plus

C:\Users\Administrator>

修改rac所有数据库实例中的listener_networks参数

SQL> alter system set LISTENER_NETWORKS='((NAME=network1)(LOCAL_LISTENER=10.138.130.153:1521)(REMOTE_LISTENER=10.138.130.155:1521))','((NAME=network2)(LOCAL_LISTENER=10.138.130.153:1521)(REMOTE_LISTENER=10.138.130.156:1521))','((NAME=network3)(LOCAL_LISTENER=10.138.130.153:1521)(REMOTE_LISTENER=10.138.130.157:1521))' sid='jyrac1';

System altered.

SQL> alter system set LISTENER_NETWORKS='((NAME=network1)(LOCAL_LISTENER=10.138.130.154:1521)(REMOTE_LISTENER=10.138.130.155:1521))','((NAME=network2)(LOCAL_LISTENER=10.138.130.154:1521)(REMOTE_LISTENER=10.138.130.156:1521))','((NAME=network3)(LOCAL_LISTENER=10.138.130.154:1521)(REMOTE_LISTENER=10.138.130.157:1521))' sid='jyrac2';

System altered.

SQL> show parameter listener

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
listener_networks                    string      ((NAME=network1)(LOCAL_LISTENE
                                                 R=10.138.130.152:1521)(REMOTE_
                                                 LISTENER=10.138.130.155:1521))
                                                 , ((NAME=network2)(LOCAL_LISTE
                                                 NER=10.138.130.152:1521)(REMOT
                                                 E_LISTENER=10.138.130.156:1521
                                                 )), ((NAME=network3)(LOCAL_LIS
                                                 TENER=10.138.130.152:1521)(REM
                                                 OTE_LISTENER=10.138.130.157:15
                                                 21))
local_listener                       string       (ADDRESS=(PROTOCOL=TCP)(HOST=

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
                                                 10.138.130.153)(PORT=1521))
remote_listener                      string      jyrac-scan:1521


再次使用增加的scan ip连接数据库,成功登录

C:\Users\Administrator>sqlplus "system/system"@10.138.130.156:1521/jyrac

SQL*Plus: Release 11.2.0.4.0 Production on 星期二 11月 22 22:25:24 2016

Copyright (c) 1982, 2013, Oracle.  All rights reserved.


连接到:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management,
OLAP,
Data Mining and Real Application Testing options

SQL> exit
从 Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management,
OLAP,
Data Mining and Real Application Testing options 断开

C:\Users\Administrator>sqlplus "system/system"@10.138.130.157:1521/jyrac

SQL*Plus: Release 11.2.0.4.0 Production on 星期二 11月 22 22:25:36 2016

Copyright (c) 1982, 2013, Oracle.  All rights reserved.


连接到:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management,
OLAP,
Data Mining and Real Application Testing options

SQL>

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