oracle sql by example

The target database version is oracle8.1.7, the directory database version is oracle9.2.0, and all data files (including control files and On-line log files) are lost. Examples of using RMAN for backup and recovery are as follows: Tutorial steps: 1. Create a tablespace in the directory database to restore the directory: SQL> Create tablespace rmants datafile '/opt/Oracle/DB02/oradata/orcl/rmants. dbf' size

you created the soft link through the command line 3.checking Oracle Instant Client SDK Header directory ... configure:error:Oracle Instant Client SDK header files not Foun DWhether your SDK folder is located in the Instantclient directory. 4.ERROR: '/tmp/pear/temp/oci8/configure--with-oci8=instantclient,/usr/local/lib/instantclient ' failedThe path followed by the--with-oci8 is correct and should be the last directory we copied. Ubuntu 14.04 I

Earlier export commands:[root@powerlong4 ~]# su - oracle[oracle@powerlong4 ~]$ ORACLE_SID=pt1;[oracle@powerlong4 ~]$ expdp \‘sys/systestpd as sysdba\‘ DIRECTORY=dir_dump_t3 FULL=YES DUMPFILE=expdpfull_pd_20150529_02.dmp......1, start importingSet up the pipeline folder on instance 2 first:[[email protected] ~]$ export oracle_sid=pt2; [Email protected] ~]$ Sqlplus

Example of SQL injection vulnerability in php: SQL injection vulnerability repair. When developing a website, for security reasons, you need to filter the characters passed from the page. Generally, you can use the following interface to call the database content: URL address bar, login field when developing a website, out of security considerations, you need to

Oracle client installation without using PL/SQL to connect to Oracle everyone knows that using PL/SQL to connect to Oracle requires installing the Oracle client software. Have you ever wondered whether to directly connect to

I. Description Oracle provides a profiler toolkit that allows you to view the performance of each module during PL/SQL Execution. You can download this script from MOS: Implementing andusing the PL/SQL profiler [ID 243755.1] You can also download it from my csdn: Http://download.csdn.net/detail/tianlesoftware/4051100 When there is asignificant gap between user

How Does oracle obtain the SQL Execution Plan of the client to optimize the SQL statement? Today is September 25,. I continue to learn about SQL optimization and have written two notes on how to obtain the SQL Execution Plan. Although the notes are a bit rough, you can find

Use PL/SQL to connect to Oracle without installing the Oracle client Want to connect to the Oracle database? Install the client. OH ~ NO !, A few hundred megabytes are missing. Now you only need to download a software named Instant Client Package from Oracle. You only need t

The following articles mainly focus on the migration solution from Oracle SQL to DB2 SQL. Migration from Oracle SQL to DB2 SQL has become very popular, if you want to know more about its practical application, you can browse the f

Example of mutual conversion between ORACLE milliseconds and dates, and oracle mutual conversion Convert millisecond to date SELECT TO_CHAR(1406538765000 / (1000 * 60 * 60 * 24) + TO_DATE('1970-01-01 08:00:00', 'YYYY-MM-DD HH:MI:SS'), 'YYYY-MM-DD HH24:MI:SS') AS CDATE FROM DUAL; Date conversion in milliseconds SELECT TO_NUMBER(TO_DATE('2014-07-28 17:12:45', 'YYYY

ORACLE application optimization: Please avoid SQL processing in a large number of cyclic logic, oracle Optimization I encountered a case a while ago: a colleague said that a previously running package was suddenly much slower than before and the execution time was very long, in the evening, the job calls this package and does not run data for several hours. So I