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ora-00980:synonym translation is no longer valid

The problem is that the synonym is invalid because it is queried by the table's synonym, and this table cannot be found, so the synonym is invalid.Analyze the reason, when we create synonyms, the system will not detect the existence of the original table. However, this error occurs when you manipulate the table with this synonym.Problem possibility:1. Whether the

The Oracle synonym management feature brings you surprises and attention

Oracle Database provides the synonym management function. Synonyms are aliases of database solution objects. They are often used to simplify object access and improve object access security. Oracle Database provides the synonym management function. Synonyms are aliases of database solution objects. They are often used to simplify object access and improve object access security. Oracle Database provide

Synonym and index in Oracle, oraclesynonym

Synonym and index in Oracle, oraclesynonym Notes: Oracle-Synonyms-- Use the user name (mode name). Table Name-- Authorization: grant create synonym to test1 (authorized by the system user ))-- PrivateCreate or replace synonym sy_test1 for gcs95.test1;-- TotalCreate public synonym public_sy_test1 for gcs95.test1;/* Priv

Google provides synonym search results to try natural language understanding Technology

Google provides synonym search results to try natural language understanding Technology Google's official blog today claims that it has used natural language understanding technology to identify synonyms in search. For example, Google search considers "pictures" and "Photos" to be the same in a certain context, taking the Query [pictures developed with coffee] as an example, we can see that the "Photos" in the search results has been bold. This is a

Oracle has ORA-01775: A synonym loop chain problem

Oracle has ORA-01775: A synonym loop chain problem 1. When you use a program to connect or use plsql to query synonyms, if there is a problem like ora-01775: the loop chain of synonyms. It is generally because there is a synonym, but there is no corresponding object for the synonym. 2. check whether there is a synonym

The method of realizing common user query x$ base table by creating view and synonym way

See a group of people asked the ordinary user access to the base table problem, the test is as follows:The x$ base table can be accessed by creating a view, and then creating a synonym, authorization, and access to the base table for ordinary users.Of course, ordinary users visit the base table is not reasonable, theoretically not necessary, permission control should also be disallowed. It is not considered reasonable here to experiment on this issue.

TRUNCATE Synonym & ORA-00942

colleagues can query the data in the table, but when truncate this table hold ORA-00942: The table or view does not exist The beginning thought is the table name writes has the question, but later discovered that he deletes is not the table, but is a synonym (synonym) It is not possible to use truncat for synonyms synonym. Connected to Oracle Database 11g Ente

Database of Neusoft Internship (12)--sequence, index, synonym

in the index are deleted, and the data space occupied by the index is freed, but the data in the table still exists.Common index-related data dictionary views are: User_indexes: The definition of the user's Index object, containing the index's name and some related attributes of the index (such as uniqueness, etc.) User_ind_columns: The column definition information for the user Index object, which lists the index name, table name, and column name,

Oracle _ sequence, index, synonym

volume. 4. When should I create an index?Do not create an index in the following cases:The table is small.The column is not often used as a join condition or appears in the WHERE clause.The queried data is greater than 2% to 4%Frequently updated tables Note: indexes are not required, but the query speed is faster when name is used. Of course, the query speed is faster, and the insertion speed will be slow. Because an index must be maintained when data is inserted. 5. query IndexesYou can use th

[Oracle]-[synonym]-public and non-public synonyms

[Oracle]-[synonym]-public and non-public synonyms [Symptom]: The Sys account creates a public synonym for the t_emp table of the bisal account. The bisal user can access t_emp_syn, but the scott account cannot query, select... t_emp_syn indicates that the table or view does not exist. SQL> select * from t_emp_syn; select * from t_emp_syn * ERROR at line 1: ORA-00942: table or view does not exist [cause]: Sc

Sqlserver: T-SQL data type = Corresponding = SQL-92 Synonym

Data Type Synonym Includes data type synonyms for compatibility with SQL-92. Synonym Ing to System Data Type Binary varying Varbinary Char varying Varchar Character Char Character Char (1) Character (N) Char (N) Character varying (N) Varchar (N) Dec Decimal Doubl

Oracle reported that DBLink synonym calling during Stored Procedure error: PLS-00201: must declare identifier, dblinkpls-00201

Oracle reported that DBLink synonym calling during Stored Procedure error: PLS-00201: must declare identifier, dblinkpls-00201 A stored procedure needs to be written a few days ago to access the field of the remote database, so a dbLink is created and a synonym is created: Create public database link orcl @ dbc connect to orcl identified by orcl USING 'orcl '; create

From N-gram Chinese text correction to Chinese grammar correction and synonym clustering

Pre-recordThis article simply explains how to use the N-gram model combined with Chinese pinyin to make error correction in Chinese, and then introduces the application of the shortest editing distance in Chinese search error correction; Finally, from the dependency tree, we explain how to make long distance error correction (grammar correction), and get a revelation from this method. Using the characteristics of the dependency tree and the ESA algorithm to do the

Third, lucene3.5 's sub-word method [discontinued Word extension, synonym search, etc.]

() {//Analyzer a1 = new Mmseganalyzer ();//not added to the word breaker comes with The Thesaurus//[me [to] [from] [The cloud] [South] [Zhao] [Tong]] [Yang] [district] [division] [Special]//import word-breaker dictionary there is the thesaurus Analyzer a1 = new Mmseganalyzer ("d:\\workspaces\\03 _lucene_analyzer\\mmseg4j-1.8.4\\data ")); [i] [from] [Yunnan] [Zhao]] [Zhao] [Yang] [district] [teachers ' College]//You can expand your own dictionary in the words-my.dic below the data file, such a

Oracle Learning (10): View, index, serial number, synonym

1. Knowledge Points: Can be read against the following record screen view, sequence, index, Synonym Sql>--view: Virtual table sql>--View advantages: Simplify complex queries, limit data access (more banks), provide independent data, the same data can be displayed differently sql>-first view: Employee number name annual salary sql> Create VIEW View1 2 as 3 select Empno,ename,sal,sal*12 annlsal from EMP; Sql>--If the display does not have permissions,

Lucene constructs synonym word breaker

lucene4.0 version number has been used since tokenstreamcomponents instead of the Tokenstream stream. It contains filter and Tokenizer.in the more complex Lucene search business scenario, it is not enough to download a word breaker directly on the web as a project. then how to assess a Chinese word breaker's good and bad: generally speaking. There are two points. Thesaurus and search efficiency, which is the algorithm. Lucene the inverted permutation table, different participle units have diff

lucene3.5 Implementing a custom synonym word breaker

I have been learning Lucene3.5 recently, and I feel that the knowledge inside is really great. Today we will share with you our own to implement a synonym for the word breaker. A word breaker consists of a number of tokenizer and tokenfilter, this article explains that we use these two features to implement their own a simple synonym word breaker, please point out the wrong place. First, design ideas What d

Oracle_ sequence, index, synonym

appear in a WHERE clauseData queried is greater than 2% to 4%Table updated frequentlyNote: The index does not need to be used, just that we are using the name to query the time, the speed will be faster. Of course, the speed of the check is fast, the insertion speed will be slow. Because you are inserting data, you need to maintain an index.5. Querying the IndexYou can use the data dictionary view user_indexes and user_ind_columns to view the information for the indexSELECT Ic.index_name, Ic.co

Lucene implements a custom word breaker (synonym query and highlighting)

Today we implement a simple word breaker, just do the demo using the following functions:1, the participle according to the space, the horizontal bar, the point number to divide;2, the implementation of HI and hello synonym query function;3, to achieve hi and hello synonym highlighting;Myanalyzer Implementation code:public class Myanalyzer extends Analyzer {private int analyzertype;public myanalyzer (int ty

Create a synonym for Oracle

after receiving instructions from the user today, you need to create a table in the database. After the script is written, the user is successfully executed, but the user is found to be using the error user1, user2 should be used. Delete the original table, log on to user2 again, and execute the script. Everything is OK. the user user1 cannot access the result. Suddenly, the user is not authorized, and the PL/SQL authorization fails, only scripts can be used for execution executio

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