oracle hints example

Tags: ora-00604 ora-38301Today, we need to make room on this machine, found that Oracle has a DBF file accounted for about 30G, the data file corresponding to the user usually rarely used, and then want to handle it-delete table space operations.The native database is a 32-bit 10.2.0.1.0, and table space has several table data for TEST_TB. Start with the DBA role of the system user, directly executeDrop tablespace TEST_TB including contents and datafi

Db2 uses hints (guidelines) like oracle)Db2 uses hints (guidelines) C: \ DB2> more f3.sqlSELECT d like oracle. DEPTNAME, e. FIRSTNME, e. lastnamefrom department d, employee ewhere d. DEPTNO = e. workdept and e. empno like '123 '/* */;C: \ DB2> C: \ DB2> db2expln-d sample-f f3. SQL-g-t-z ";"DB2 Un

This example describes the use of the jquery hints effect. Share to everyone for your reference. The implementation methods are as follows: Copy Code code as follows: $ (function () {$ (". ToolTip"). MouseEnter (function (e) {This.mytitle=this.titleThis.title= ""var a= "$ ("Body"). Append (a);$ ("div"). css ({"Top": (E.pagey + y) + "px","Left": (E.pagex + x) + "px"}). Show ("Fast")}). mo

When importing data using the IMPDP data pump in Oracle, if you have already created a user before importing, you will be prompted with an error: "ORA-31684: Object type already exists", such as:In fact, this problem is not serious, you can not create a user, import when you specify a Super user import:impdp system/123456@ORCLDIRECTORY=DUMP_EXPDUMPFILE=EXPDATA.DMP remap_schema=SOURCE_USER:DEST_USERThis will not cause a ORA-31684 error, and the user "

o'clock in the morning execution Interval = TRUNC (sysdate) + 1 +1/(24) 3: Regular Weekly execution For example: Every Monday 1 o'clock in the morning execution Interval = TRUNC (Next_day (sysdate, ' Monday ')) +1/24 4: Regular Monthly execution For example: 1st 1 o'clock in the morning every month to execute Interval =>trunc (Last_day (sysdate)) +1+1/24 5: Quarterly Scheduled execution For

Because the B*tree index does not store null values, some Oracle queries do not use indexes when the indexed field is allowed to be empty. Most of the time, it appears that we can use a full index scan, which may give Oracle the chance to discard the index because of the existence of the null value (Scan). In this case, the index is not used even with hints,

Reprint Please specify source: http://blog.csdn.net/dongdong9223/article/details/47448751This article is from "I'm a fish-hook blog." When importing data using the IMPDP data pump in Oracle, it is assumed that the user was created before the import, prompting the error: "ORA-31684: Object type already exists." Such as:In fact, this problem is not serious, can not create a user first, import when you specify a Super user import:impdp system/123456

A simple example shows Oracle's "selfless" robustness, and the example oracle is selfless. Oracle's strength lies in its ability to always help you choose the right execution plan, even if you give it wrong instructions. Lab: 1. Create a test table: Collect statistics: Create a B-Tree Index: 2. Execute select id from tbl_plan; to view its execution plan:

Oracle Database Array Operation example, oracle Database example1. Create a bean object 1 -- CREATE bean object 2 create or replace type "fm_flowcphdtswjimpbean" as object3 (4 wf_no varchar2 (256), 5 wf_priority_level varchar2 (256) 6)2. Create a bean-based array 1 -- CREATE a bean-based array 2 create or replace type "FM_FLOWCPHDTSWJJIMPARRAY" is table of FM_FLO

Oracle simple script example, oracle example Oracle simple script example 1. Add a table -- Modified on: 2014.09.21 -- Modifier: Yi xiaoqun -- Modified: added the purchase payment form. DECLARE VC_STR VARCHAR2 (5000 ); VN_COUNT NU

Oracle job creation example, oracle job example-- 1. Learning jobs in plsql-- Learning job-- Create a tableCreate table test_job (para_date date );Commit;Insert into test_job values (sysdate );Commit;Select * from test_job;-- Establish the storage processCreate or replace procedure test_jobproceBeginInsert into test_jo

* fromv$version; BANNER----------------------------------------------------------------Oracle Database 10g Enterprise Edition Release10.2.0.4.0-PRODPL/sql Release10.2.0.4.0-Productioncore10.2.0.4.0Productiontns forLinux:version10.2.0.4.0-Productionnlsrtl Version10.2.0.4.0-ProductionSql>Show parameter Compati NAME TYPE VALUE------------------------------------ ----------- ------------------------------compatiblestring 10.2.0.1.0plsql_v2_compatibil

Oracle C #ImplementationOracle Text full-Text searchThe simple example is what we will introduce in this article ,. A simple example of using C # to implement full-Text retrieval of Oracle Text in. NET is designed to get a preliminary understanding of the general steps of full-Text retrieval of

Oracle materialized view code example, oracle Materialized View Materialized View of Oracle Recently, oracle materialized views have been updated based on the project business needs. You can search for information on this topic on the Internet to facilitate improvement. The

Oracle Database hot backup and recovery and example, oracle Database Manual Hot Standby (Database opening status) Backup control file: Alter database backup controlfile to '/u01/oradata/prod/con. bak1 '; Back up data files (here pl/SQL is used for batch processing, and the query results can be pasted and run) BeginFor I in (select tablespace_name from dba_tablesp

Oracle uses a single cursor to insert data. For example, oracle cursor Original works, from "Deep Blue blog" blog, deep blue blog: http://blog.csdn.net/huangyanlong/article/details/47143731Background Recently, some friends asked me how to insert multiple pieces of data into the target table in a single way. To solve this problem, let's make a small experiment. T

Oracle lock table troubleshooting example: Oracle lock table troubleshooting One time a developer directly runs the delete table operating system on the database server during peak hours, resulting in no response for a long period of execution. Then, the SQLPLUS client is closed and the delete statement is run again, this causes the database to run slowly.The que

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 SQL uses with recursive analysis (for example) and oracle Recursion The WITH recursion provided by Oracle is not just a repetition of tree-like queries. In fact, recursive WITH statements can provide more flexible tree-like Query functions. The following describes the CYCLE statement. This statement not only su

'), 'day') from dual; // MondaySelect to_char (to_date ('1970-08-26 ', 'yyyy-mm-dd'), 'day ','Nls _ DATE_LANGUAGE = American ') from dual; // Monday// Set the date languageAlter session set NLS_DATE_LANGUAGE = 'American ';// You can alsoTO_DATE ('1970-08-26 ', 'yyyy-mm-dd', 'nls _ DATE_LANGUAGE = American ') 4. Days of the two-day periodCopy codeThe Code is as follows:Select floor (sysdate-to_date ('20140901', 'yyyymmdd') from dual; 5. Use a time of nullCopy codeThe Code is as follows:Select id,