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DbEnv::log_put |
#include <db_cxx.h>int DbEnv::log_put(DbLsn *lsn, const Dbt *data, u_int32_t flags);
The DbEnv::log_put method appends records to the log. The DbLsn of the put record is returned in the lsn parameter.
The DbEnv::log_put method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success.
The caller is responsible for providing any necessary structure to data. (For example, in a write-ahead logging protocol, the application must understand what part of data is an operation code, what part is redo information, and what part is undo information. In addition, most transaction managers will store in data the DbLsn of the previous log record for the same transaction, to support chaining back through the transaction's log records during undo.)
The DbEnv::log_flush method may fail and throw DbException, encapsulating one of the following non-zero errors, or return one of the following non-zero errors:
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