In Oracle there are two usefull function to format a timestamp to string and vceversa…. To format a date to string you can use TO_CHAR function like this:
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SELECT TO_CHAR(sysdate, 'DD-MON-YYYY HH24:MI:SSxFF') from dual; |
For viceversa To format a string to date you can use TO_ function like this:
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SELECT TO_DATE('2003/07/09', 'yyyy/mm/dd') from dual; |
The format mask list: Parameter Explanation YEAR Year, spelled out…
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Ciao a tutti! Un breve articolo per documentare l’attività che con Ivan stiamo svolgendo da consulenti in iFaber. Il progetto, nato in collaborazione con Elever srl ormai un anno fa, è finalizzato alla realizzazione di una portale web per la gestione e qualifica dei fornitori. Il portale è destinato sia ad uso interno (Unicredit) che…
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After installing Oracle 10g on an Ubuntu 9.04 system, i found that the Apex application was enabled only for the localhost. Some time is necessary open or close the access of apex from remote. To do this is only need to access to your oracle system by a dba user and run this sql command:…
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Using JDBC with Oracle 10g i found this error : “ora 12519 tnsno appropriate service handler found”, today i found an article on Internet about. I only execute on apex query :
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ALTER SYSTEM SET PROCESSES=150 SCOPE=SPFILE; |
after that i restarted my Oracle10gXe server on my server, and all works well !!! incredible
[lang_en] To raise an Exception from a Trigger, Stored Procedure or Function without needing anything you can use the function : raise_application_error. Syntax : raise_application_error(<your exception integer code>, <your string description>); Per scatenare un eccezione da un Trigger o una Stored Procedure o una Funzione Oracle si può semplicemente utilizzare la funzione di sistema :…
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by using some simple view in Oracle you can extract a lot of information about your DB schema, some explicit samples : (assuming that MyDBOwner is the owner of the DB and ACTIVITY is a table of a schema, this sample is succesfully tested on Oracle 10g)
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-- LIST OF USERS select OWNER,COUNT(DISTINCT TABLE_NAME) from ALL_TAB_COLUMNS GROUP BY OWNER -- LIST OF TABLES PER OWNER select table_name from ALL_TAB_COLUMNS where owner = 'MyDBOwner' group by table_name -- LIST OF FIELDS PER TABLE select COLUMN_NAME, DATA_TYPE, DATA_LENGTH, NULLABLE, CHAR_LENGTH from ALL_TAB_COLUMNS where owner = 'MyDBOwner' AND TABLE_NAME = 'ACTIVITY' -- FINDING PRIMARY KEYS select COLUMN_NAME, DATA_TYPE, DATA_LENGTH, NULLABLE, CHAR_LENGTH from ALL_TAB_COLUMNS where owner = 'MyDBOwner' AND TABLE_NAME = 'ACTIVITY' -- A single character that indicates the type of constraint: 'C' = NOT NULL, 'P' = PRIMARY KEY, 'U' = UNIQUE, and 'R' = FOREIGN KEY. SELECT UC.CONSTRAINT_NAME, UCC.* FROM USER_CONSTRAINTS UC, USER_CONS_COLUMNS UCC WHERE UC.OWNER='MyDBOwner' AND UC.TABLE_NAME = 'ACTIVITY' AND UC.CONSTRAINT_TYPE = 'P' AND UC.CONSTRAINT_NAME = UCC.CONSTRAINT_NAME |
a great article about this is :…
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