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# grep
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# grep
SwapTotal /proc/meminfo
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# touch /home/swap
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# dd if=/dev/zero of=/home/swap bs=1024
count=4100000
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# mkswap /home/swap
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swap
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# swapoff –a
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swap
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# swapon /home/swap
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etc/fstab
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swap default 0 0
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# df –ah
Oracle 11g
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# rpm -qa | grep make gcc glibc
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binutils-2.17.50.0.6-2.el5
compat-libstdc++-33-3.2.3-61
elfutils-libelf-0.125-3.el5
elfutils-libelf-devel-0.125
glibc-2.5-12
glibc-common-2.5-12
glibc-devel-2.5-12
gcc-4.1.1-52
gcc-c++-4.1.1-52
libaio-0.3.106
libaio-devel-0.3.106
libgcc-4.1.1-52
libstdc++-4.1.1
libstdc++-devel-4.1.1-52.e15
make-3.81-1.1
sysstat-7.0.0
unixODBC-2.2.11
unixODBC-devel-2.2.11
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Oracle Database Software Downloads
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/etc/sysctl.conf
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kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
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connect by Êǽṹ»¯²éѯÖÐÓõ½µÄ£¬Æä»ù±¾Óï·¨ÊÇ£º
select ... from tablename start with Ìõ¼þ1
connect by Ìõ¼þ2
where Ìõ¼þ3;
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select * from table
start with org_id = 'HBHqfWGWPy'
connect by prior org_id = parent_id;
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CURSOR_SHARING
PropertyDescription
Parameter type
String
Syntax
CURSOR_SHARING = { SIMILAR | EXACT | FORCE }
Default value
EXACT
Modifiable
ALTER SESSION, ALTER SYSTEM
Basic
No
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