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Showing posts from November, 2018

Certbot

List all certificates:

sudo certbot certificates Create wildcard certificate for domain example.com:

 sudo certbot certonly --manual --preferred-challenges dns --server https://acme-v02.api.letsencrypt.org/directory --manual-public-ip-logging-ok -d '*.example.com' -d <example.com> Delete certificate:
 sudo certbot delete

Increase DBMS_OUTPUT

DBMS_OUTPUT has different default buffer sizes, depending on your Oracle version.

You can increase the buffer up to 1,000,000 using the following PL/SQL statement:
DBMS_OUTPUT.ENABLE(1000000); The SQL*Plus statement to achieve the same result is:
SET SERVEROUTPUT ON SIZE 1000000 Starting with Oracle release 10g, it is possible to use the following unlimited buffer settings: DBMS_OUTPUT.ENABLE (buffer_size => NULL);

PL/SQL Write BLOB to file

PL/SQL Write BLOB to file (temp file):

in my case I have a table with BLOB column, I keep my pdf files inside, and I need to save them in temp directory. This procedure accepts 3 arguments: BLOB, directory name to save into and file name:
CREATE OR REPLACE PROCEDURE write_pdf(v_blob IN BLOB, p_directory IN VARCHAR2, p_filename IN VARCHAR2 ) IS v_length INTEGER; v_index INTEGER := 1; v_bytecount INTEGER; v_tempraw RAW(32767); v_file UTL_FILE.file_type; BEGIN v_file := UTL_FILE.fopen(p_directory, p_filename, 'wb', 32767); v_length := DBMS_LOB.getlength(v_blob); WHILE v_index <= v_length LOOP v_bytecount := 32767; DBMS_LOB.read(v_blob, v_bytecount, v_index, v_tempraw); UTL_FILE.put_raw(v_file, v_tempraw); UTL_FILE.fflush(v_file); …

Work with directories Oracle PL/SQL

Work with directories Oracle PL/SQL:

Create(add) temp directory on c:\ referenced as DIR_TEMP
CREATE DIRECTORY DIR_TEMP AS 'C:\temp';
List all directories by system user:
SELECT * FROM all_directories;