I'm using a DOS window for all of this. Add a comment. Active Oldest Votes. Improve this answer. David Aldridge David Aldridge Yes; if it can't create a log file it terminates immediately. I'm inclined to agree - though I think it is a bit rubbish that I can't set the logfile within the control file if it can't read the control file etc I would have expected it to log to the screen. I'll accept this as the answer though! Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.
Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Making Agile work for data science. It is possible to specify different character sets for different input datafiles. If the control file character set is different from the datafile character set, keep the following issue in mind. To ensure that the specifications are correct, you may prefer to specify hexadecimal strings, rather than character string values. If hexadecimal strings are used with a datafile in the UTF Unicode encoding, the byte order is different on a big endian versus a little endian system.
For example, "," comma in UTF on a big endian system is X'c'. On a little endian system it is X'2c00'. This allows the same syntax to be used in the control file on both a big endian and a little endian system. For example, the specification CHAR 10 in the control file can mean 10 bytes or 10 characters. These are equivalent if the datafile uses a single-byte character set.
However, they are often different if the datafile uses a multibyte character set. To avoid insertion errors caused by expansion of character strings during character set conversion, use character-length semantics in both the datafile and the target database columns. Byte-length semantics are the default for all datafiles except those that use the UTF16 character set which uses character-length semantics by default. It is possible to specify different length semantics for different input datafiles.
The following datatypes use byte-length semantics even if character-length semantics are being used for the datafile, because the data is binary, or is in a special binary-encoded form in the case of ZONED and DECIMAL:. This is necessary to handle datafiles that have a mix of data of different datatypes, some of which use character-length semantics, and some of which use byte-length semantics. The SMALLINT length field takes up a certain number of bytes depending on the system usually 2 bytes , but its value indicates the length of the character string in characters.
Character-length semantics in the datafile can be used independent of whether or not character-length semantics are used for the database columns. Therefore, the datafile and the database columns can use either the same or different length semantics.
Loads are interrupted and discontinued for a number of reasons. Additionally, when an interrupted load is continued, the use and value of the SKIP parameter can vary depending on the particular case. The following sections explain the possible scenarios. In a conventional path load, data is committed after all data in the bind array is loaded into all tables.
If the load is discontinued, only the rows that were processed up to the time of the last commit operation are loaded. There is no partial commit of data.
In a direct path load, the behavior of a discontinued load varies depending on the reason the load was discontinued. This means that when you continue the load, the value you specify for the SKIP parameter may be different for different tables. If a fatal error is encountered, the load is stopped and no data is saved unless ROWS was specified at the beginning of the load.
In that case, all data that was previously committed is saved. This means that the value of the SKIP parameter will be the same for all tables. When a load is discontinued, any data already loaded remains in the tables, and the tables are left in a valid state.
If the conventional path is used, all indexes are left in a valid state. If the direct path load method is used, any indexes that run out of space are left in an unusable state. You must drop these indexes before the load can continue.
You can re-create the indexes either before continuing or after the load completes. Other indexes are valid if no other errors occurred. See Indexes Left in an Unusable State for other reasons why an index might be left in an unusable state. Use this information to resume the load where it left off. To continue the discontinued load, use the SKIP parameter to specify the number of logical records that have already been processed by the previous load.
At the time the load is discontinued, the value for SKIP is written to the log file in a message similar to the following:. This message specifying the value of the SKIP parameter is preceded by a message indicating why the load was discontinued. Note that for multiple-table loads, the value of the SKIP parameter is displayed only if it is the same for all tables. However, there may still be situations in which you may want to do so. At some point, when you want to combine those multiple physical records back into one logical record, you can use one of the following clauses, depending on your data:.
In the following example, integer specifies the number of physical records to combine. For example, two records might be combined if a pound sign were in byte position 80 of the first record. If any other character were there, the second record would not be added to the first. If the condition is true in the current record, then the next physical record is read and concatenated to the current physical record, continuing until the condition is false. If the condition is false, then the current physical record becomes the last physical record of the current logical record.
THIS is the default. If the condition is true in the next record, then the current physical record is concatenated to the current logical record, continuing until the condition is false. For the equal operator, the field and comparison string must match exactly for the condition to be true. For the not equal operator, they may differ in any character. This test is similar to THIS, but the test is always against the last nonblank character. If the last nonblank character in the current physical record meets the test, then the next physical record is read and concatenated to the current physical record, continuing until the condition is false.
If the condition is false in the current record, then the current physical record is the last physical record of the current logical record. Specifies the starting and ending column numbers in the physical record. Column numbers start with 1. Either a hyphen or a colon is acceptable start - end or start : end. If you omit end, the length of the continuation field is the length of the byte string or character string.
If you use end, and the length of the resulting continuation field is not the same as that of the byte string or the character string, the shorter one is padded.
Character strings are padded with blanks, hexadecimal strings with zeros. A string of characters to be compared to the continuation field defined by start and end, according to the operator. The string must be enclosed in double or single quotation marks.
The comparison is made character by character, blank padding on the right if necessary. A string of bytes in hexadecimal format used in the same way as str. X'1FB would represent the three bytes with values 1F, B0, and 33 hexadecimal. The default is to exclude them. This is the only time you refer to positions in physical records. All other references are to logical records. That is, data values are allowed to span the records with no extra characters continuation characters in the middle. Assume that you have physical records 14 bytes long and that a period represents a space:.
Assume that you have the same physical records as in Example Note that columns 1 and 2 are not removed from the physical records when the logical records are assembled. Therefore, the logical records are assembled as follows the same results as for Example It defines the relationship between records in the datafile and tables in the database. The specification of fields and datatypes is described in later sections. The table must already exist.
If the table is not in the user's schema, then the user must either use a synonym to reference the table or include the schema name as part of the table name for example, scott. That method overrides the global table-loading method. The following sections discuss using these options to load data into empty and nonempty tables.
It requires the table to be empty before loading. After the rows are successfully deleted, a commit is issued. You cannot recover the data that was in the table before the load, unless it was saved with Export or a comparable utility. If data does not already exist, the new rows are simply loaded. The row deletes cause any delete triggers defined on the table to fire. For more information on cascaded deletes, see the information about data integrity in Oracle9i Database Concepts.
To update existing rows, use the following procedure:. It is only valid for a parallel load. Parameters for Parallel Direct Path Loads. You can choose to load or discard a logical record by using the WHEN clause to test a condition in the record. The WHEN clause appears after the table name and is followed by one or more field conditions.
For example, the following clause indicates that any record with the value "q" in the fifth column position should be loaded:. Parentheses are optional, but should be used for clarity with multiple comparisons joined by AND, for example:.
If all data fields are terminated similarly in the datafile, you can use the FIELDS clause to indicate the default delimiters. Terminator strings can contain one or more characters. You can override the delimiter for any given column by specifying it after the column name. Assume that the preceding data is read with the following control file and the record ends after dname:. In this case, the remaining loc field is set to null. This option inserts each index entry directly into the index, one record at a time.
Instead, index entries are put into a separate, temporary storage area and merged with the original index at the end of the load. This method achieves better performance and produces an optimal index, but it requires extra storage space. During the merge, the original index, the new index, and the space for new entries all simultaneously occupy storage space. The resulting index may not be as optimal as a freshly sorted one, but it takes less space to produce.
It also takes more time because additional UNDO information is generated for each index insert. This option is suggested for use when either of the following situations exists:.
If you are not the intended recipient you may not copy or deliver this message to anyone. If so, follow this format. From: Dummy via oracle-db-l [mailto:oracle-db-l Groups. I can get it in when using SQL plus. Can anyone with the knowledge please help me bcos my my server is up and running and my connection to the server is ok. Test the connection to the database like this… If this works, then sqlldr should work.
Must i use sqlldr as a control file..? OR how does one create a control file or when you choose the option that SQL Loader must build the control file there is a step where it asks for control filename what must i write here. What is the command you are using to run sqlldr? Try this…. Jeremy From: Dummy via oracle-db-l [mailto:oracle-db-l Groups. This was my original response to your question. You can build a control file by following this format. Sorry I didnt get you.
So how do i accomplish this? Any help is greatly appreciated.
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