Example2:检验游标是否打开,如果打开显示提取行数 DECLARE CURSOR emp_cursor IS SELECT empno,ename,job FROM emp; v_empno emp.empno%TYPE; v_name emp.ename%TYPE; v_job emp.job%TYPE; BEGIN OPEN emp_cursor; LOOP FETCH emp_cursor INTO v_empno,v_name,v_job; EXIT WHEN emp_cursor%NOTFOUND; E...
declarer_emp scott.emp%rowtype;cursorcur_empisselectt.*fromscott.emp t;beginopencur_emp; loopfetchcur_empintor_emp;exitwhencur_emp%notfound; dbms_output.put_line(r_emp.empno||''||r_emp.sal);endloop;closecur_emp;end;
Oracle Database need not verify thata cursor is in the cache because it cannot be deallocated while an applicationcursor associated with it is open.
Oracle Database need not verify thata cursor is in the cache because it cannot be deallocated while an applicationcursor associated with it is open.
drivers. Those operations are not enclosed indoPriviligedblocks. One noteworthy example is that the calling code needs the open socket permission when using the thin driver to open a connection. This is to prevent rogue code from using the drivers for a denial of service attack, among other ...
Simply increasing the "OPEN_CURSORS" limit can help you avoid the problem for a while, but that just hides the problem, not solve it. It is your responsibility to explicitly close out cursors that you no longer need. Error Message: "ORA-01002: fetch out of sequence" A JDBC Connection ...
Close a PL/pgSQL cursor using the CLOSE command. DO $$ DECLARE c3 CURSOR FOR SELECT id, name FROM employees; emp_id integer; emp_name varchar; BEGIN OPEN c3; FETCH LAST FROM c3 INTO emp_id, emp_name; CLOSE c3; END$$; Example of iterating through a cursor PL/pg...
It performs a cursor loop on the unpublished records on the SHIPMENT_PUB_INFO table (PUB_STATUS = 'U'). It will only execute one loop iteration in most cases. For each record retrieved, GETNXT gets the following: 1. A lock of the queue table for the current business objects (i.e. ...
Name your PL/SQL packages in a fashion such that the implementation of this function can be similar to the previous example. If your implementation performs a table lookup to determine what packages and procedures should be allowed, then performance can be improved if you pin the cursor in the...
(Fetching from a cursor after the last row has been retrieved and the ORA-1403 error returned.) 2)如果游标已经被FOR UPDATE 字句打开,发出COMMIT以后fetch将会返回错误。 (If the cursor has been opened with the FOR UPDATE clause, fetching after a COMMIT has been issued will return the error.)...