所谓动态内存分配是指在程序执行的过程中动态地分配或者回收存储空间的内存分配方法。动态分配不像数组等静...
/* These functions implement the MemoryContext API for AllocSet context. */ extern void *AllocSetAlloc(MemoryContext context, Size size); extern void AllocSetFree(void *pointer); extern void *AllocSetRealloc(void *pointer, Size size); extern void AllocSetReset(MemoryContext context); extern vo...
postgres=# select * from tbl_kenyon limit 1; ERROR: invalid memory alloc request size 1870229097 postgres=# vacuum full verbose analyze tbl_kenyon; INFO: vacuuming "public.tbl_kenyon" ERROR: invalid memory alloc request size 1870229097 才10条数据肯定不可能报这种内存不够的错误,其实是表/数据奔溃。
Enterprise Postgresのpg_dumpコマンドで、bytea型の列を含むテーブルをバックアップしたところ、「テーブル"xxxxx"の内容のダンプに失敗: PQgetResult()が失敗しました。 (15877)」、「ERROR: invalid memory alloc request size xxxxxxxxxx」というエラーになりました。 原因と対処方法を教えてくだ...
7.CheckPointWarning:如果产生的wal日志超过max_wal_size而导致的检查点发生的时间比这段时间更近,向服务器日志中写入消息,此时建议增加max_wal_size。以下截图取自postgresql 14-internal 代码分析:checkpoint可以由checkpointer进程周期创建,也可以因为其他原因(backend、xlogwrite、shutdown等)通过RequestCheckpoint创建,...
bn=(Backend*)malloc(sizeof(Backend));if(!bn){ereport(LOG,(errcode(ERRCODE_OUT_OF_MEMORY),errmsg("out of memory")));returnSTATUS_ERROR; } /* Compute the cancel key that will be assigned to this backend. The backend will have its own copy in the forked-off process' value of MyCance...
本文简单介绍了PG插入数据部分的源码,主要内容包括PostgresMain函数的实现逻辑,该函数位于postgres.c文件中。 一、源码解读 PostgresMain函数 ...
AC_CHECK_SIZEOF([void *]) AC_CHECK_SIZEOF([size_t]) AC_CHECK_SIZEOF([long]) # Determine memory alignment requirements for the basic C data types. AC_CHECK_ALIGNOF(short) AC_CHECK_ALIGNOF(int) AC_CHECK_ALIGNOF(long) if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then ...
Correct parsing of BDR WAL messages (RT67662) In rare cases a DDL which is replicated across a EDB Postgres Distributed cluster and requires a global lock may cause errors such as "invalid memory alloc request size" or "insufficient data left in message" due to incorrect parsing of direct WA...
By company size Enterprises Small and medium teams Startups Nonprofits By use case DevSecOps DevOps CI/CD View all use cases By industry Healthcare Financial services Manufacturing Government View all industries View all solutions Resources Topics AI DevOps Security Software Development...