GORM Oracle driver for connect Oracle DB and Manage Oracle DB, Based on CengSin/oracle and sijms/go-ora (pure go oracle client)，not recommended for use in a production environment.
- Oracle
11g+ (v1.6.3and earlier versions support only12c+) - Golang
v1.6.1:go1.16+v1.6.2:go1.18+
- gorm
1.24.0+
go get -d github.com/godoes/gorm-oraclepackage main
import (
oracle "github.com/godoes/gorm-oracle"
"gorm.io/gorm"
)
func main() {
options := map[string]string{
"CONNECTION TIMEOUT": "90",
"LANGUAGE": "SIMPLIFIED CHINESE",
"TERRITORY": "CHINA",
"SSL": "false",
}
// oracle://user:password@127.0.0.1:1521/service
url := oracle.BuildUrl("127.0.0.1", "1521", "service", "user", "password", options)
dialector := oracle.New(oracle.Config{
DSN: url,
IgnoreCase: false, // query conditions are not case-sensitive
NamingCaseSensitive: true, // whether naming is case-sensitive
VarcharSizeIsCharLength: true, // whether VARCHAR type size is character length, defaulting to byte length
// RowNumberAliasForOracle11 is the alias for ROW_NUMBER() in Oracle 11g, defaulting to ROW_NUM
RowNumberAliasForOracle11: "ROW_NUM",
})
db, err := gorm.Open(dialector, &gorm.Config{
SkipDefaultTransaction: true, // 是否禁用默认在事务中执行单次创建、更新、删除操作
DisableForeignKeyConstraintWhenMigrating: true, // 是否禁止在自动迁移或创建表时自动创建外键约束
// 自定义命名策略
NamingStrategy: schema.NamingStrategy{
NoLowerCase: true, // 是否不自动转换小写表名
IdentifierMaxLength: 30, // Oracle: 30, PostgreSQL:63, MySQL: 64, SQL Server、SQLite、DM: 128
},
PrepareStmt: false, // 创建并缓存预编译语句，启用后可能会报 ORA-01002 错误
CreateBatchSize: 50, // 插入数据默认批处理大小
})
if err != nil {
// panic error or log error info
}
// set session parameters
if sqlDB, err := db.DB(); err == nil {
_, _ = oracle.AddSessionParams(sqlDB, map[string]string{
"TIME_ZONE": "+08:00", // ALTER SESSION SET TIME_ZONE = '+08:00';
"NLS_DATE_FORMAT": "YYYY-MM-DD", // ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD';
"NLS_TIME_FORMAT": "HH24:MI:SSXFF", // ALTER SESSION SET NLS_TIME_FORMAT = 'HH24:MI:SS.FF3';
"NLS_TIMESTAMP_FORMAT": "YYYY-MM-DD HH24:MI:SSXFF", // ALTER SESSION SET NLS_TIMESTAMP_FORMAT = 'YYYY-MM-DD HH24:MI:SS.FF3';
"NLS_TIME_TZ_FORMAT": "HH24:MI:SS.FF TZR", // ALTER SESSION SET NLS_TIME_TZ_FORMAT = 'HH24:MI:SS.FF3 TZR';
"NLS_TIMESTAMP_TZ_FORMAT": "YYYY-MM-DD HH24:MI:SSXFF TZR", // ALTER SESSION SET NLS_TIMESTAMP_TZ_FORMAT = 'YYYY-MM-DD HH24:MI:SS.FF3 TZR';
})
}
// do somethings
}ORA-01000: 超出打开游标的最大数
ORA-00604: 递归 SQL 级别 1 出现错误
ORA-01000: 超出打开游标的最大数
show parameter OPEN_CURSORS;alter system set OPEN_CURSORS = 1000; -- or bigger
commit;ORA-01002: 提取违反顺序
如果重复执行同一查询，第一次查询成功，第二次报
ORA-01002错误，可能是因为启用了PrepareStmt，关闭此配置即可。
推荐配置：
&gorm.Config{
SkipDefaultTransaction: true, // 是否禁用默认在事务中执行单次创建、更新、删除操作
DisableForeignKeyConstraintWhenMigrating: true, // 是否禁止在自动迁移或创建表时自动创建外键约束
// 自定义命名策略
NamingStrategy: schema.NamingStrategy{
NoLowerCase: true, // 是否不自动转换小写表名
IdentifierMaxLength: 30, // Oracle: 30, PostgreSQL:63, MySQL: 64, SQL Server、SQLite、DM: 128
},
PrepareStmt: false, // 创建并缓存预编译语句，启用后可能会报 ORA-01002 错误
CreateBatchSize: 50, // 插入数据默认批处理大小
}
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CengSin |
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