AQ tables have DATE columns in 9i and TIMESTAMP in 10g
Hi,
I created a queue table on 9i and 10g database's using
eg:
dbms_aqadm.create_queue_table(queue_table => 'TEST',
queue_payload_type => 'RAW',
multiple_consumers => TRUE,
compatible => '8.1.3');
But in 9i
ENQ_TIME DATE
and 10g
ENQ_TIME TIMESTAMP(6)
Why does date column change to timestamp?
Thanks
Reynold.
My strong suggestion would be to convert all dates to char and then go from there. Doing anything other than that will force Applications to convert the dates (and I can only assume the timestamps). It is the nature of the application/datatype design. Converting everything to a CONSISTANT format, even if that is a varchar goes a long way to removing many unknowns.
My two cents,
Scott
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Deleting from multiple tables where few tables have same column name
Hi,
I am new to PL/SQL and need some help. I need to delete data older then X years from some 35 odd tables in my schema and out of those tables 25 tables have same column name on which i can have my "where" clause and rest 10 table have different table names. I am doing something like this :
declare
table_list UTL_FILE.FILE_TYPE;
string_line VARCHAR2(1000);
tables_count number:=0;
table_name VARCHAR2(400);
column_name VARCHAR2(400);
BEGIN
table_list := UTL_FILE.FOPEN('ORALOAD','test7.txt','R');
DBMS_OUTPUT.PUT_LINE(table_list);
LOOP
UTL_FILE.GET_LINE(table_list,string_line);
table_name := substr(string_line,1, instr(string_line,'|')-1);
column_name := substr(string_line, instr(string_line,'|')+1);
DBMS_OUTPUT.PUT_LINE(table_name);
DBMS_OUTPUT.PUT_LINE(column_name);
IF column_name = 'SUBMISSION_TIME' THEN
delete from :table_name where to_date(:column_name)<(sysdate-(365*7));
ELSE
delete from || table_name || where ( || to_date(column_name) || ) <(sysdate-(365*7));
END IF;
END LOOP;
EXCEPTION
WHEN NO_DATA_FOUND THEN
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DBMS_OUTPUT.PUT_LINE('Number of Tables processed is : ' || tables_count);
UTL_FILE.FCLOSE(table_list);
END;
WHERE the text file "text7.txt" contains list of table name and column names separated by a pipe line. But when I execute the above proc it gives error "invalid table name".
Can something like this be done or is there any other way to execute this task of deletion from 35 tables.
Thanks.Thanks for replies. I don't know what I am doing wrong but still not getting this damn thing work...This is the proc i am running now :
declare
table_list UTL_FILE.FILE_TYPE;
string_line VARCHAR2(1000);
tables_count number:=0;
table_name VARCHAR2(4000);
column_name VARCHAR2(4000);
code_text VARCHAR2(2000);
BEGIN
table_list := UTL_FILE.FOPEN('ORALOAD','test7.txt','R');
LOOP
UTL_FILE.GET_LINE(table_list,string_line);
table_name := substr(string_line,1, instr(string_line,'|')-1);
column_name := substr(string_line, instr(string_line,'|')+1);
IF column_name = 'SUBMISSION_TIME' THEN
DBMS_OUTPUT.PUT_LINE('do nothing');
ELSE
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Execute Immediate code_text;
END IF;
END LOOP;
EXCEPTION
WHEN NO_DATA_FOUND THEN
UTL_FILE.FCLOSE(table_list);
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UTL_FILE.FCLOSE(table_list);
END;
But it gives following error :
" ORA-06550: line 1, column 51:
PL/SQL: ORA-00933: SQL command not properly ended
ORA-06550: line 1, column 7:
PL/SQL: SQL Statement ignored
ORA-06550: line 1, column 68:
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ODP OracleCommandBuilder. Updating a table including DATE columns.
Hi
I have a problem with the OracleCommandBuilder not creating the correct update commands when I have DATE type columns in the table.
I have created a test table (called DATETEST) with three columns:
STRINGCOLUMN VARCHAR2 10
DATECOLUMN DATE
NUMBERCOLUMN NUMBER
The STRINGCOLUMN is the primary key.
Then I created a typed dataset that looks like this:
STRINGCOLUMN string
DATECOLUMN string
NUMBERCOLUMN long
This is the XML schema for the typed dataset:
<?xml version="1.0" encoding="utf-8" ?>
<xs:schema id="DateDS" targetNamespace="http://tempuri.org/DateDS.xsd" elementFormDefault="qualified" attributeFormDefault="qualified" xmlns="http://tempuri.org/DateDS.xsd" xmlns:mstns="http://tempuri.org/DateDS.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xs:element name="DateDS" msdata:IsDataSet="true">
<xs:complexType>
<xs:choice maxOccurs="unbounded">
<xs:element name="DATETEST">
<xs:complexType>
<xs:sequence>
<xs:element name="DATECOLUMN" type="xs:string" minOccurs="0" />
<xs:element name="STRINGCOLUMN" type="xs:string" minOccurs="0" />
<xs:element name="NUMBERCOLUMN" type="xs:long" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:schema>
And this is the test code:
Dim connection As Oracle.DataAccess.Client.OracleConnection
Dim adapter As New Oracle.DataAccess.Client.OracleDataAdapter()
Dim dbCommand As New Oracle.DataAccess.Client.OracleCommand()
Dim sqlstring As String
Dim data As New DateDS() 'Typed dataset
Const ConnectionString As String = "User Id=............."
Try
'Connect to database
connection = New OracleConnection(ConnectionString)
connection.Open()
'Get data from table DATETEST
dbCommand.CommandText = "SELECT STRINGCOLUMN, TO_CHAR(DATECOLUMN) AS DATECOLUMN, NUMBERCOLUMN FROM DATETEST"
dbCommand.Connection = connection
adapter.SelectCommand = dbCommand
adapter.Fill(data, "DATETEST")
'Make changes to dataset
data.DATETEST(0).DATECOLUMN = Now()
data.DATETEST(0).NUMBERCOLUMN = data.DATETEST(0).NUMBERCOLUMN + 1
'Update database
sqlstring = "SELECT * FROM DATETEST"
adapter.SelectCommand = New OracleCommand(sqlstring, connection)
Dim custCB As New Oracle.DataAccess.Client.OracleCommandBuilder()
custCB.DataAdapter = adapter
adapter.Update(data, "DATETEST")
'Disconnect
connection.Close()
connection.Dispose()
Catch exc As Exception
MessageBox.Show(exc.Message)
End Try
Getting the data from the database is not a problem.
The dataset contains the correct information.
But updating the database is impossible.
I get errors like:
ORA-01861: literal does not match format string
And if I don't specify a DATE format in the TO_CHAR statement I get this error:
Concurrency violation: the UpdateCommand affected 0 records.
I think I've tried everything.
I've used the OracleGlobalization class, with the SetSessionInfo method.
I've tried all different types of date conversions to make sure that
the date format on the database is the same as in the dataset.
I've tried to change the NLS parameters on the DB server and in the registry on the client.
I've tried to change the DATECOLUMN type in the typed dataset from string to Oracle.DataAccess.Types.OracleDate
But it still doesn't work.
The default date format on the DB 9i server is AMERICAN,(DD-MON-RR).
A strange thing is that when I instead of using the ODP classes use
the System.Data.OracleClient and its OracleCommandBuilder
the code works perfectly without any errors.
This is the test code that works:
Dim connection As System.Data.OracleClient.OracleConnection
Dim adapter As New System.Data.OracleClient.OracleDataAdapter()
Dim dbCommand As New System.Data.OracleClient.OracleCommand()
Dim data As New DateDS()
Dim sqlstring As String
Const ConnectionString As String = "User Id=......."
Try
'Connect to database
connection = New System.Data.OracleClient.OracleConnection(ConnectionString)
connection.Open()
'Get data from table DATETEST
dbCommand.CommandText = "SELECT STRINGCOLUMN, TO_CHAR(DATECOLUMN,'YYYY-MM-DD HH24:MI:SS') AS DATECOLUMN, NUMBERCOLUMN FROM DATETEST"
dbCommand.Connection = connection
adapter.SelectCommand = dbCommand
adapter.Fill(data, "DATETEST")
'Make changes to dataset
data.DATETEST(0).DATECOLUMN = Now()
data.DATETEST(0).NUMBERCOLUMN = data.DATETEST(0).NUMBERCOLUMN + 1
'Update database
sqlstring = "SELECT * FROM DATETEST"
adapter.SelectCommand = New System.Data.OracleClient.OracleCommand(sqlstring, connection)
Dim custCB As New System.Data.OracleClient.OracleCommandBuilder()
custCB.DataAdapter = adapter
adapter.Update(data, "DATETEST")
'Disconnect
connection.Close()
connection.Dispose()
Catch exc As Exception
MessageBox.Show(exc.Message)
End Try
My experience until this came up is that the ODP provider is better on everything
than the microsoft Oracle provider so I don't want to switch unless I have to.
Could someone that have used the ODP OracleCommandBuilder for updating a table including DATE columns with a typed dataset please give me some tips on how to make this work?
I would be the happiest man on earth if someone had a solution :-)
ErikDon't convert the dates to strings. Ever.
The command builder uses the metadata returned from the select command to build the insert/update commands. Using to_char in the query tells ODP that that is a varchar2 column. If you omit the to_char the commandBuilder will know to bind a date parameter in that spot.
Also in your typed dataset you should change the type from a string to a date.
David -
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user4497169 wrote:
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Try this:
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http://www.dba-oracle.com/oracle_tips_index_scan_fbi_sql.htm
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http://www.dba-oracle.com/art_sql_tune.htm
Hope this helps . . .
Donald K. Burleson
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You can use their API to start the long consuming time job (reading files from the network) and also to paint a progress bar, showing the progress in the Event Dispatch Thread.
This is how I've solved my problem:
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CHR
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