On Fri, Nov 1, 2019 at 1:44 PM M Tarkeshwar Rao <m.tarkeshwar.rao@xxxxxxxxxxxx> wrote: > Getting following error in using cursor to fetch the records from a large table in c language. Regarding this, "c language", I'll comment later.... > Can you please suggest why it is coming and what is the remedy for this. > Nov 1 13:21:54 sprintstd2 postgres[18604]: [10-1] < 2019-11-01 13:21:54.212 CET > ERROR: current transaction is aborted, commands ignored until end of transaction block > Nov 1 13:21:54 sprintstd2 postgres[18604]: [10-2] < 2019-11-01 13:21:54.212 CET > STATEMENT: BEGIN > Nov 1 13:21:54 sprintstd2 postgres[18604]: [11-1] < 2019-11-01 13:21:54.324 CET > ERROR: current transaction is aborted, commands ignored until end of transaction block > Nov 1 13:21:54 sprintstd2 postgres[18604]: [11-2] < 2019-11-01 13:21:54.324 CET > STATEMENT: BEGIN > Nov 1 13:21:54 sprintstd2 postgres[18604]: [12-1] < 2019-11-01 13:21:54.356 CET > ERROR: current transaction is aborted, commands ignored until end of transaction block > Nov 1 13:21:54 sprintstd2 postgres[18604]: [12-2] < 2019-11-01 13:21:54.356 CET > STATEMENT: BEGIN > Nov 1 13:21:54 sprintstd2 postgres[18604]: [13-1] < 2019-11-01 13:21:54.360 CET > ERROR: current transaction is aborted, commands ignored until end of transaction block > Nov 1 13:21:54 sprintstd2 postgres[18604]: [13-2] < 2019-11-01 13:21:54.360 CET > STATEMENT This seems incomplete, but I's telling you the cause. You had an error, you need to terminate the transaction before issuing a new one, i.e., do a commit ( which, IIRC, will rollback if the transaction is in error ) or rollback. > Sample Code snippet used As you stated C I cannot comment too much, but notice: > theCursorDec = (RWCString)"DECLARE " + mySqlCursor + " CURSOR FOR " + theSql; > myFetchSql = "FETCH " + fetchStr + " IN " + mySqlCursor; Neither of these are C, they COULD be C++ > // Begin the cursor Same as this comment. > PQexec(connection, ,"BEGIN")) > PQexec(connection, ,"myFetchSql”) And these are definitely not C ( no ; ) and, if you generated them by editing, myfetchsql is quoted which smells fishy. I won't comment more until you confirm that is the real code, but anyway it seems to me you issue transaction start queries without properly terminating them with a transaction end one. Francisco Olarte
