And most importantly, downloads and installs number of packages which are required for the Oracle 11g database software installation while resolving the dependencies between the packages as well Note that the oracle-validated RPM package is
And most importantly, downloads and installs number of packages which are required for the Oracle 11g database software installation while resolving the dependencies between the packages as wellNote that the oracle-validated RPM package is accessible through the Oracle Unbreakable Linux Network (ULN) which requires a support contract or from the Oracle public yum repository.
First we needed to configure the Linux machine to be able to connect to the internet using the corporate proxy and we did this by editing the/etc/profile.d/proxy.sh file with some environment variables like FTP_PROXY and HTTP_PROXY
export http_proxy=http://test-apache-001-dev.corporateict.domain:8123/
export ftp_proxy=http://test-apache-001-dev.corporateict.domain:8123/
export no_proxy=.corporateict.domain
export HTTP_PROXY=http://test-apache-001-dev.corporateict.domain:8123/
export FTP_PROXY=http://test-apache-001-dev.corporateict.domain:8123/
Login once again as root to invoke the changes made to the environment.
We then use wget to download the file which has the repository locations
[root@kens-orasql-001 yum.repos.d]# wget http://public-yum.oracle.com/public-yum-el5.repo
We have to update this file and change the line enabled=0 to enabled=1 for the tag which is appropriate to our Linux version – in our case we were using OEL 5.7 so we have to update these lines:
Change
[ol5_u7_base]
name=Oracle Linux $releasever – U7 – $basearch – base
baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL5/7/base/$basearch/
gpgkey=http://public-yum.oracle.com/RPM-GPG-KEY-oracle-el5
gpgcheck=1
enabled=0
to
[ol5_u7_base]
name=Oracle Linux $releasever – U7 – $basearch – base
baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL5/7/base/$basearch/
gpgkey=http://public-yum.oracle.com/RPM-GPG-KEY-oracle-el5
gpgcheck=1
enabled=1
We then ran a yum update followed by the yum install oracle-validated
[root@kens-orasql-002 yum.repos.d]# <strong>yum update</strong> Loaded plugins: rhnplugin, security This system is not registered with ULN. ULN support will be disabled. ol5_u7_base | 1.1 kB 00:00 ol5_u7_base/primary | 1.5 MB 00:07 ol5_u7_base 4605/4605 Skipping security plugin, no data Setting up Update Process No Packages marked for Update
[root@kens-orasql-002 yum.repos.d]# <strong>yum install oracle-validated</strong> Loaded plugins: rhnplugin, security This system is not registered with ULN. ULN support will be disabled. Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package oracle-validated.x86_64 0:1.1.0-14.el5 set to be updated --> Processing Dependency: kernel-uek >= 2.6.32 for package: oracle-validated --> Processing Dependency: libXp.so.6 for package: oracle-validated --> Processing Dependency: /usr/lib/libodbccr.so for package: oracle-validated --> Processing Dependency: /usr/lib64/libodbccr.so for package: oracle-validated --> Processing Dependency: unixODBC-devel for package: oracle-validated --> Processing Dependency: libaio-devel for package: oracle-validated --> Processing Dependency: sysstat for package: oracle-validated --> Processing Dependency: /usr/lib64/libaio.so for package: oracle-validated --> Processing Dependency: /usr/lib/libodbc.so.1 for package: oracle-validated --> Processing Dependency: /usr/lib/libaio.so for package: oracle-validated --> Processing Dependency: compat-gcc-34-c++ for package: oracle-validated --> Processing Dependency: compat-gcc-34 for package: oracle-validated --> Processing Dependency: libdb-4.2.so()(64bit) for package: oracle-validated --> Processing Dependency: libodbc.so.1()(64bit) for package: oracle-validated --> Running transaction check ---> Package compat-db.x86_64 0:4.2.52-5.1 set to be updated ---> Package compat-gcc-34.x86_64 0:3.4.6-4.1 set to be updated ---> Package compat-gcc-34-c++.x86_64 0:3.4.6-4.1 set to be updated ---> Package kernel-uek.x86_64 0:2.6.32-200.13.1.el5uek set to be installed --> Processing Dependency: kernel-firmware >= 2.6.32-200.13.1.el5uek for package: kernel-uek ---> Package libXp.i386 0:1.0.0-8.1.el5 set to be updated ---> Package libaio-devel.i386 0:0.3.106-5 set to be updated ---> Package libaio-devel.x86_64 0:0.3.106-5 set to be updated ---> Package sysstat.x86_64 0:7.0.2-11.el5 set to be updated ---> Package unixODBC.i386 0:2.2.11-7.1 set to be updated ---> Package unixODBC.x86_64 0:2.2.11-7.1 set to be updated ---> Package unixODBC-devel.i386 0:2.2.11-7.1 set to be updated ---> Package unixODBC-devel.x86_64 0:2.2.11-7.1 set to be updated --> Running transaction check ---> Package kernel-uek-firmware.noarch 0:2.6.32-200.13.1.el5uek set to be updated --> Finished Dependency Resolution Dependencies Resolved ====================================================================================================================================================================== Package Arch Version Repository Size ====================================================================================================================================================================== Installing: oracle-validated x86_64 1.1.0-14.el5 ol5_u7_base 24 k Installing for dependencies: compat-db x86_64 4.2.52-5.1 ol5_u7_base 1.6 M compat-gcc-34 x86_64 3.4.6-4.1 ol5_u7_base 4.3 M compat-gcc-34-c++ x86_64 3.4.6-4.1 ol5_u7_base 13 M kernel-uek x86_64 2.6.32-200.13.1.el5uek ol5_u7_base 25 M kernel-uek-firmware noarch 2.6.32-200.13.1.el5uek ol5_u7_base 2.5 M libXp i386 1.0.0-8.1.el5 ol5_u7_base 22 k libaio-devel i386 0.3.106-5 ol5_u7_base 12 k libaio-devel x86_64 0.3.106-5 ol5_u7_base 11 k sysstat x86_64 7.0.2-11.el5 ol5_u7_base 187 k unixODBC i386 2.2.11-7.1 ol5_u7_base 830 k unixODBC x86_64 2.2.11-7.1 ol5_u7_base 835 k unixODBC-devel i386 2.2.11-7.1 ol5_u7_base 743 k unixODBC-devel x86_64 2.2.11-7.1 ol5_u7_base 799 k Transaction Summary ====================================================================================================================================================================== Install 14 Package(s) Upgrade 0 Package(s) Total size: 50 M Is this ok [y/N]: y Downloading Packages: warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID 1e5e0159 ol5_u7_base/gpgkey | 1.4 kB 00:00 Importing GPG key 0x1E5E0159 "Oracle OSS group (Open Source Software group) " from http://public-yum.oracle.com/RPM-GPG-KEY-oracle-el5 Is this ok [y/N]: y Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : unixODBC 1/14 Installing : compat-gcc-34 2/14 Installing : sysstat 3/14 Installing : compat-db 4/14 Installing : unixODBC 5/14 Installing : unixODBC-devel 6/14 Installing : unixODBC-devel 7/14 Installing : libaio-devel 8/14 Installing : libaio-devel 9/14 Installing : kernel-uek-firmware 10/14 Installing : libXp 11/14 Installing : compat-gcc-34-c++ 12/14 Change references of /dev/hd in /etc/fstab to disk label Installing : kernel-uek 13/14 WARNING: No module ehci-hcd found for kernel 2.6.32-200.13.1.el5uek, continuing anyway WARNING: No module ohci-hcd found for kernel 2.6.32-200.13.1.el5uek, continuing anyway WARNING: No module uhci-hcd found for kernel 2.6.32-200.13.1.el5uek, continuing anyway Installing : oracle-validated 14/14 Installed: oracle-validated.x86_64 0:1.1.0-14.el5 Dependency Installed: compat-db.x86_64 0:4.2.52-5.1 compat-gcc-34.x86_64 0:3.4.6-4.1 compat-gcc-34-c++.x86_64 0:3.4.6-4.1 kernel-uek.x86_64 0:2.6.32-200.13.1.el5uek kernel-uek-firmware.noarch 0:2.6.32-200.13.1.el5uek libXp.i386 0:1.0.0-8.1.el5 libaio-devel.i386 0:0.3.106-5 libaio-devel.x86_64 0:0.3.106-5 sysstat.x86_64 0:7.0.2-11.el5 unixODBC.i386 0:2.2.11-7.1 unixODBC.x86_64 0:2.2.11-7.1 unixODBC-devel.i386 0:2.2.11-7.1 unixODBC-devel.x86_64 0:2.2.11-7.1 Complete! [root@kens-orasql-002 yum.repos.d]#
We can see that the oracle-validated RPM has been installed.
[root@kens-orasql-001 yum.repos.d]# <strong>rpm -qa |grep oracle-valid</strong> oracle-validated-1.1.0-14.el5
We can also check and see that the user and groups have been created as well.
[root@kens-orasql-001 yum.repos.d]# <strong>cat /etc/passwd |grep oracle</strong> oracle:x:54321:54321::/home/oracle:/bin/bash [root@kens-orasql-001 yum.repos.d]# <strong>cat /etc/group |grep dba </strong> dba:x:54322:oracle
It has also updated the /etc/security/limits.conf file
[root@kens-orasql-001 yum.repos.d]# cat /etc/security/limits.conf # Oracle-Validated setting for nofile soft limit is 131072 oracle soft nofile 131072 # Oracle-Validated setting for nofile hard limit is 131072 oracle hard nofile 131072 # Oracle-Validated setting for nproc soft limit is 131072 oracle soft nproc 131072 # Oracle-Validated setting for nproc hard limit is 131072 oracle hard nproc 131072 # Oracle-Validated setting for core soft limit is unlimited oracle soft core unlimited # Oracle-Validated setting for core hard limit is unlimited oracle hard core unlimited # Oracle-Validated setting for memlock soft limit is 50000000 oracle soft memlock 50000000 # Oracle-Validated setting for memlock hard limit is 50000000 oracle hard memlock 50000000
Finally, we can see that the /etc/sysctl.conf has been updated as well with some “Oracle-Validated” settings.
# For 11g, Oracle-Validated setting for fs.file-max is 6815744 # For 10g, uncomment 'fs.file-max = 327679', and comment 'fs.file-max = 6553600' entry and re-run sysctl -p # fs.file-max = 327679 fs.file-max = 6815744 # Oracle-Validated setting for kernel.msgmni is 2878 kernel.msgmni = 2878 # Oracle-Validated setting for kernel.msgmax is 8192 kernel.msgmax = 8192 # Oracle-Validated setting for kernel.msgmnb is 65536 kernel.msgmnb = 65536 # Oracle-Validated setting for kernel.sem is '250 32000 100 142' kernel.sem = 250 32000 100 142 # Oracle-Validated setting for kernel.shmmni is 4096 kernel.shmmni = 4096 # Oracle-Validated setting for kernel.shmall is 1073741824 kernel.shmall = 1073741824 # Oracle-Validated setting for kernel.shmmax is 4398046511104 on x86_64 and 4294967295 on i386 architecture. Refer Note id 567506.1 kernel.shmmax = 4398046511104 # Oracle-Validated setting for kernel.sysrq is 1 kernel.sysrq = 1 # Oracle-Validated setting for net.core.rmem_default is 262144 net.core.rmem_default = 262144 # For 11g, Oracle-Validated setting for net.core.rmem_max is 4194304 # For 10g, uncomment 'net.core.rmem_max = 2097152', comment 'net.core.rmem_max = 4194304' entry and re-run sysctl -p # net.core.rmem_max = 2097152 net.core.rmem_max = 4194304 # Oracle-Validated setting for net.core.wmem_default is 262144 net.core.wmem_default = 262144 # For 11g, Oracle-Validated setting for net.core.wmem_max is 1048576 # For 10g, uncomment 'net.core.wmem_max = 262144', comment 'net.core.wmem_max = 1048576' entry for this parameter and re-run sysctl -p # net.core.wmem_max = 262144 net.core.wmem_max = 1048576 # Oracle-Validated setting for fs.aio-max-nr is 3145728 fs.aio-max-nr = 3145728 # For 11g, Oracle-Validated setting for net.ipv4.ip_local_port_range is 9000 65500 # For 10g, uncomment 'net.ipv4.ip_local_port_range = 1024 65000', comment 'net.ipv4.ip_local_port_range = 9000 65500' entry and re-run sysctl -p # net.ipv4.ip_local_port_range = 1024 65000 net.ipv4.ip_local_port_range = 9000 65500 # Oracle-Validated setting for vm.min_free_kbytes is 51200 to avoid OOM killer vm.min_free_kbytes = 51200

ACID attributes include atomicity, consistency, isolation and durability, and are the cornerstone of database design. 1. Atomicity ensures that the transaction is either completely successful or completely failed. 2. Consistency ensures that the database remains consistent before and after a transaction. 3. Isolation ensures that transactions do not interfere with each other. 4. Persistence ensures that data is permanently saved after transaction submission.

MySQL is not only a database management system (DBMS) but also closely related to programming languages. 1) As a DBMS, MySQL is used to store, organize and retrieve data, and optimizing indexes can improve query performance. 2) Combining SQL with programming languages, embedded in Python, using ORM tools such as SQLAlchemy can simplify operations. 3) Performance optimization includes indexing, querying, caching, library and table division and transaction management.

MySQL uses SQL commands to manage data. 1. Basic commands include SELECT, INSERT, UPDATE and DELETE. 2. Advanced usage involves JOIN, subquery and aggregate functions. 3. Common errors include syntax, logic and performance issues. 4. Optimization tips include using indexes, avoiding SELECT* and using LIMIT.

MySQL is an efficient relational database management system suitable for storing and managing data. Its advantages include high-performance queries, flexible transaction processing and rich data types. In practical applications, MySQL is often used in e-commerce platforms, social networks and content management systems, but attention should be paid to performance optimization, data security and scalability.

The relationship between SQL and MySQL is the relationship between standard languages and specific implementations. 1.SQL is a standard language used to manage and operate relational databases, allowing data addition, deletion, modification and query. 2.MySQL is a specific database management system that uses SQL as its operating language and provides efficient data storage and management.

InnoDB uses redologs and undologs to ensure data consistency and reliability. 1.redologs record data page modification to ensure crash recovery and transaction persistence. 2.undologs records the original data value and supports transaction rollback and MVCC.

Key metrics for EXPLAIN commands include type, key, rows, and Extra. 1) The type reflects the access type of the query. The higher the value, the higher the efficiency, such as const is better than ALL. 2) The key displays the index used, and NULL indicates no index. 3) rows estimates the number of scanned rows, affecting query performance. 4) Extra provides additional information, such as Usingfilesort prompts that it needs to be optimized.

Usingtemporary indicates that the need to create temporary tables in MySQL queries, which are commonly found in ORDERBY using DISTINCT, GROUPBY, or non-indexed columns. You can avoid the occurrence of indexes and rewrite queries and improve query performance. Specifically, when Usingtemporary appears in EXPLAIN output, it means that MySQL needs to create temporary tables to handle queries. This usually occurs when: 1) deduplication or grouping when using DISTINCT or GROUPBY; 2) sort when ORDERBY contains non-index columns; 3) use complex subquery or join operations. Optimization methods include: 1) ORDERBY and GROUPB


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