Add a line in a text file

Hello

I'm using Oracle 11 g.

I'm storing text in XML DB files and access them using Java, pl/sql, and FTP.

Sometimes, these files are huge, and all I need is to add a line.

Is it possible to do so without reading the full content of the file, using PL/SQL? Or Java?

Thanks for all the help you can give me.

procedure writeDebug (P_LOG_MESSAGE VARCHAR2)
as
pragma autonomous_transaction;
CLOB V_LOG_CONTENT;
BLOB V_LOG_BUFFER;

V_SOURCE_OFFSET integer: = 1;
V_TARGET_OFFSET integer: = 1;
Integer V_WARNING;
Integer V_LANG_CONTEXT: = 0;

BLOB V_DEBUG_CONTENT;

Start
     
createDebugOutputFile;

Update RESOURCE_VIEW
set RES = updateXML (RES,'/ Resource/DisplayName/text () ', extractValue (RES,'/ Resource/DisplayName/text () '))
where (RES, G_DEBUG_OUTPUT_FILE) equals_path = 1;

Select extractValue(RES,'/Resource/XMLLob')
in V_DEBUG_CONTENT
of RESOURCE_VIEW
where (RES, G_DEBUG_OUTPUT_FILE) equals_path = 1;

V_LOG_CONTENT: = Chr (13) | Chr (10) | TO_CHAR (systimestamp,'YYYY-MM-DD "T" HH24:MI:SS.) FF') | ' : ' || P_LOG_MESSAGE;
DBMS_LOB.createTemporary (V_LOG_BUFFER, true);
DBMS_LOB.convertToBlob (V_LOG_BUFFER, V_LOG_CONTENT, DBMS_LOB.getLength (V_LOG_CONTENT), V_SOURCE_OFFSET, V_TARGET_OFFSET, nls_charset_id('AL32UTF8'), V_LANG_CONTEXT, V_WARNING);
DBMS_LOB.freeTemporary (V_LOG_CONTENT);
DBMS_LOB. Open (V_DEBUG_CONTENT, DBMS_LOB.lob_readwrite);
DBMS_LOB. Append (V_DEBUG_CONTENT, V_LOG_BUFFER);
DBMS_LOB. Close (V_DEBUG_CONTENT);
DBMS_LOB.freeTemporary (V_LOG_BUFFER);
commit;
end;

Tags: Database

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